Sensitive sense Black and White Stock Photos & Images

Hands are nothing if not expressive, they speak of warmth, love, emotion, and humanity, they beckon and they forbid. Stock Photo

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freely the girl inhales fragrance. lineart. vector Stock Vector

RFMPJ4J7–freely the girl inhales fragrance. lineart. vector

Slightly wrinkled sheet of white book with braille text Stock Photo

RF2MGM88F–Slightly wrinkled sheet of white book with braille text

Positive Personalities Character Traits. Stick Figures Man Icons. Starting with the Alphabet S. Stock Vector

RFPDB4JW–Positive Personalities Character Traits. Stick Figures Man Icons. Starting with the Alphabet S.

Three-dimensional rendering, lens rendering close-up, tech-sensitive background Stock Photo

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RME6R9DK–A beautiful young woman

Old senile bold man with bags sit on public concrete bench consume eat lunch outdoor by rock wall Tokyo Japan Eastern Asia Stock Photo

RMATF401–Old senile bold man with bags sit on public concrete bench consume eat lunch outdoor by rock wall Tokyo Japan Eastern Asia

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Old senile tired woman sit rest have nap in busy boulevard & people go pass by Ciudad del Este Paraguay South Latin America Stock Photo

RMA1R220–Old senile tired woman sit rest have nap in busy boulevard & people go pass by Ciudad del Este Paraguay South Latin America

. Experimental morphology. Protoplasm; Growth. §2] GEOTROPISM 397 h. Stems. — The central fact that the upward growth of stems is determined by gravity is established by the observa- tions that on the klinostat no definitely directed growth occurs, and that on the centrifugal machine the stem turns in the opposite sense to that of the cen- trifugal pressure. The stem is nega- tively geotropic. As with roots, so with stems, a number of questions now arise : Where is the sensitive region and where the response? At what inclination of the stem is the strongest geotropic cur- vature called forth? Stock Photo

RMRE0G8N–. Experimental morphology. Protoplasm; Growth. §2] GEOTROPISM 397 h. Stems. — The central fact that the upward growth of stems is determined by gravity is established by the observa- tions that on the klinostat no definitely directed growth occurs, and that on the centrifugal machine the stem turns in the opposite sense to that of the cen- trifugal pressure. The stem is nega- tively geotropic. As with roots, so with stems, a number of questions now arise : Where is the sensitive region and where the response? At what inclination of the stem is the strongest geotropic cur- vature called forth?

Funny man professes bible & Jesus as woman look astonished & people go pass by Rio de Janeiro Brazil Brasil South Latin America Stock Photo

RMATF3FE–Funny man professes bible & Jesus as woman look astonished & people go pass by Rio de Janeiro Brazil Brasil South Latin America

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Old senile beggar man with hat ransack search litter bin as people go pass by in road Quito Ecuador South Latin America Stock Photo

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RMDGC7BC–Hands are nothing if not expressive, they speak of warmth, love, emotion, and humanity, they beckon and they forbid.

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. Introduction to botany. Botany. l82 Introduction to Botany.. that insects have a keener sense of smell than our own, and are attracted by the odors of flowers which we cannot detect; but their vision, except at short distances, is not sharp. They, however, appear to appreciate differences in color at a distance where the forms of objects are still indistinct to them. 133. Sense of Smell in Insects. — The nerves of insects that are sensitive to odors ramify and come to the surface in the antennae, which are under- stood to be their organs of smell (Fig.97). That the sense of smell may be very Stock Photo

RMRDRD82–. Introduction to botany. Botany. l82 Introduction to Botany.. that insects have a keener sense of smell than our own, and are attracted by the odors of flowers which we cannot detect; but their vision, except at short distances, is not sharp. They, however, appear to appreciate differences in color at a distance where the forms of objects are still indistinct to them. 133. Sense of Smell in Insects. — The nerves of insects that are sensitive to odors ramify and come to the surface in the antennae, which are under- stood to be their organs of smell (Fig.97). That the sense of smell may be very

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. A manual of elementary zoology . Zoology. ANNELIDA . THE EARTHWORM, NEREIS 223 and prolonged at their inner ends into fibres, which run in the nervous system (Fig. 140). These are sense rgans, CQ^ an(j jn ^ forepar); 0f the body some of them are collected into groups, which are rudimentary sense organs. Experiment shows that the worms are sensitive to light and to vibrations of the ground and can smell, but gives no evidence of a sense of hearing. The excretory or- gans of Excretion. ° ,, an earth- worm, like those of the frog, consist of tubes whose walls are excretory and richly supplied w Stock Photo

RMRDHR6T–. A manual of elementary zoology . Zoology. ANNELIDA . THE EARTHWORM, NEREIS 223 and prolonged at their inner ends into fibres, which run in the nervous system (Fig. 140). These are sense rgans, CQ^ an(j jn ^ forepar); 0f the body some of them are collected into groups, which are rudimentary sense organs. Experiment shows that the worms are sensitive to light and to vibrations of the ground and can smell, but gives no evidence of a sense of hearing. The excretory or- gans of Excretion. ° ,, an earth- worm, like those of the frog, consist of tubes whose walls are excretory and richly supplied w

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. Veterinary surgery ... Veterinary surgery; Veterinary pathology; Horses; Teeth; Domestic animals. 20 ANIMAL DENTISTRY. and encrusted over the remaining portion with crusta pe- trosa, or cement. The soft structures are the pulp, which occupies a cavity within the body of the tooth, the aveolo- dental periosteum which surrounds the external surface of the fang, the gums or gingivae, which cover the neck, the blood vessels which supply its nutrition, and the nerves which furnish its sensibility and tactile sense. DENTINE. The dentine is a hard, yellowish, sensitive substance con-. FlG. I A. Ena Stock Photo

RMRDR105–. Veterinary surgery ... Veterinary surgery; Veterinary pathology; Horses; Teeth; Domestic animals. 20 ANIMAL DENTISTRY. and encrusted over the remaining portion with crusta pe- trosa, or cement. The soft structures are the pulp, which occupies a cavity within the body of the tooth, the aveolo- dental periosteum which surrounds the external surface of the fang, the gums or gingivae, which cover the neck, the blood vessels which supply its nutrition, and the nerves which furnish its sensibility and tactile sense. DENTINE. The dentine is a hard, yellowish, sensitive substance con-. FlG. I A. Ena

. Zoölogy [microform] : descriptive and practical. Zoology; Zoologie. i * Ii8 Descriptive Zoology.. The Sense Organs. — The sense of touch is preeminent. This sense is best developed in the palps, along the margin of the mantle, especially that part of it which forms the borders of the siphons, and in the foot. There is no sense of sight, but the tentacles around the siphons seem somewhat sensitive to light. On a nerve near the pedal ganglion is the so-called "ear sac," of doubtful use. At the base of the gills is an organ sometimes called the "smelling patch," which, perha Stock Photo

RMREND6K–. Zoölogy [microform] : descriptive and practical. Zoology; Zoologie. i * Ii8 Descriptive Zoology.. The Sense Organs. — The sense of touch is preeminent. This sense is best developed in the palps, along the margin of the mantle, especially that part of it which forms the borders of the siphons, and in the foot. There is no sense of sight, but the tentacles around the siphons seem somewhat sensitive to light. On a nerve near the pedal ganglion is the so-called "ear sac," of doubtful use. At the base of the gills is an organ sometimes called the "smelling patch," which, perha

. The physiology of the domestic animals; a text-book for veterinary and medical students and practitioners. Physiology, Comparative; Domestic animals. Fig. 84.—The " Parrot-Mouth" Malformation of the Horse's Mouth. (Gamgee.) deeper, and with two diverging rows of papillse, each containing from eleven to thirteen papilloe, at the base of the tongue. In the horse the sensitive and mobile upper lip is the main organ in the collection of food. The nose, aided by the sense of touch, serves to indicate the substances suitable for food; the upper lip serves to carry the food between the in Stock Photo

RMRE04FJ–. The physiology of the domestic animals; a text-book for veterinary and medical students and practitioners. Physiology, Comparative; Domestic animals. Fig. 84.—The " Parrot-Mouth" Malformation of the Horse's Mouth. (Gamgee.) deeper, and with two diverging rows of papillse, each containing from eleven to thirteen papilloe, at the base of the tongue. In the horse the sensitive and mobile upper lip is the main organ in the collection of food. The nose, aided by the sense of touch, serves to indicate the substances suitable for food; the upper lip serves to carry the food between the in

. A manual of botany. Botany. 504 MANUAL OP BOTANY and a regulating and controlling part which can co-ordinate the response to stimulation, or can initiate movements, &o., in its absence. In the higher animals these are well differentiated from each other; we have the sense organs and the afferent nerves ; the efferent nerves, connected with the motor and other mechanisms; and the nerve-cells which possess the co-ordinating power. In the much less differentiated plant-body the first two of these at least are recognisable. If we compare the sense organs of the animal with the sensitive part Stock Photo

RMRE0MMH–. A manual of botany. Botany. 504 MANUAL OP BOTANY and a regulating and controlling part which can co-ordinate the response to stimulation, or can initiate movements, &o., in its absence. In the higher animals these are well differentiated from each other; we have the sense organs and the afferent nerves ; the efferent nerves, connected with the motor and other mechanisms; and the nerve-cells which possess the co-ordinating power. In the much less differentiated plant-body the first two of these at least are recognisable. If we compare the sense organs of the animal with the sensitive part

. The physiology of domestic animals ... Physiology, Comparative; Veterinary physiology. Fig. 84.—The " Parrot-Mouth" Malformation of the Horse's Mouth. (Gamgee.) deeper, and with two diverging rows of papillae, each containing from eleven to thirteen papillae, at the base of the tongue. In the horse the sensitive and mobile upper lip is the main organ in the collection of food. The nose, aided by the sense of touch, serves to indicate the substances suitable for food; the upper lip serves to carry the food between the incisor teeth, so that it may be firmly held, while by an active Stock Photo

RMRE3XJ0–. The physiology of domestic animals ... Physiology, Comparative; Veterinary physiology. Fig. 84.—The " Parrot-Mouth" Malformation of the Horse's Mouth. (Gamgee.) deeper, and with two diverging rows of papillae, each containing from eleven to thirteen papillae, at the base of the tongue. In the horse the sensitive and mobile upper lip is the main organ in the collection of food. The nose, aided by the sense of touch, serves to indicate the substances suitable for food; the upper lip serves to carry the food between the incisor teeth, so that it may be firmly held, while by an active

. The animals and man; an elementary textbook of zoology and human physiology. Zoology; Physiology. SPECIAL SENSES 369 epidermal tissue of the skin (fig. 183). It is believed that those end organs that give the sense of pain lie nearer the surface, while those for the sense of warmth lie more deeply in the skin. The pressure spots are very dose together at the tips of the fingers and on the tongue, a condition which makes these places very sensitive to touch. Most parts of the body are covered with fine hairs. Physiologists have shown that pressure points lie over the hair follicles, and that Stock Photo

RMRDT35N–. The animals and man; an elementary textbook of zoology and human physiology. Zoology; Physiology. SPECIAL SENSES 369 epidermal tissue of the skin (fig. 183). It is believed that those end organs that give the sense of pain lie nearer the surface, while those for the sense of warmth lie more deeply in the skin. The pressure spots are very dose together at the tips of the fingers and on the tongue, a condition which makes these places very sensitive to touch. Most parts of the body are covered with fine hairs. Physiologists have shown that pressure points lie over the hair follicles, and that

. Minute marvels of nature, being some revelations of the microscope, exhibited by photomicrographs taken by the author. Natural history; Microscopes. WONDERFUL TEETH AND TONGUES 241 are termed by scientists the inaxillary palpi; their exact tunctioii is, however, douljtful without further evidence. They are undoul)tedl)' organs of a sensitive nature, and may be associated with the sense of taste, or smell, or ma- i)erhai)s indi-. Fig. 162. Tongue of a butterfly cate a sense ot which our human experience tells us nothinj ; At the base of these palps is the spot where the proboscis unites wit Stock Photo

RMRDP0B5–. Minute marvels of nature, being some revelations of the microscope, exhibited by photomicrographs taken by the author. Natural history; Microscopes. WONDERFUL TEETH AND TONGUES 241 are termed by scientists the inaxillary palpi; their exact tunctioii is, however, douljtful without further evidence. They are undoul)tedl)' organs of a sensitive nature, and may be associated with the sense of taste, or smell, or ma- i)erhai)s indi-. Fig. 162. Tongue of a butterfly cate a sense ot which our human experience tells us nothinj ; At the base of these palps is the spot where the proboscis unites wit

. Outlines of the comparative physiology and morphology of animals. Anatomy, Comparative; Physiology, Comparative. SENSE ORGANS. j,r blind spot can be perceived in the field of darkness. At night in the dark—when the retina by long rest is very sensitive—if the visual plane be lowered toward the feet, and then the eyes be turned quickly and strongly to one. Fig. 89.—Diagram showing place of the invisible spots in the field of vision. The full lines show the eyes turned to the right; the dotted lines the same turned to the left. Ps = point of sight. side or the other, two brilliant stars with d Stock Photo

RMRE07DP–. Outlines of the comparative physiology and morphology of animals. Anatomy, Comparative; Physiology, Comparative. SENSE ORGANS. j,r blind spot can be perceived in the field of darkness. At night in the dark—when the retina by long rest is very sensitive—if the visual plane be lowered toward the feet, and then the eyes be turned quickly and strongly to one. Fig. 89.—Diagram showing place of the invisible spots in the field of vision. The full lines show the eyes turned to the right; the dotted lines the same turned to the left. Ps = point of sight. side or the other, two brilliant stars with d

. Outlines of the comparative physiology and morphology of animals. Anatomy, Comparative; Physiology, Comparative. THE NERVOUS SYSTEM OF MAN. 57 Every mechanism for action and reaction between the organism and the external world must consist of two kinds of central cells (a sensory and a motor), two kinds of transmitting fibers (afferent and efferent), and two kinds of peripheral terminations (a sensitive sur- face or sense organ and a muscular or contractile tissue). Fig. 36, repeated from page 26, is a diagram illustrating this action and reaction. The manner in which the whole acts is brief Stock Photo

RMRDY3JP–. Outlines of the comparative physiology and morphology of animals. Anatomy, Comparative; Physiology, Comparative. THE NERVOUS SYSTEM OF MAN. 57 Every mechanism for action and reaction between the organism and the external world must consist of two kinds of central cells (a sensory and a motor), two kinds of transmitting fibers (afferent and efferent), and two kinds of peripheral terminations (a sensitive sur- face or sense organ and a muscular or contractile tissue). Fig. 36, repeated from page 26, is a diagram illustrating this action and reaction. The manner in which the whole acts is brief

. Outlines of zoology. Zoology. SJTJVSS OA'CUVS. 607 '["lie sense of smell does not seem to be keenly de- veloped in many birds. The nostrils are longitudinal slits overhung by the swollen, more or less sensitive, cere. The sense of hearing is acute. E.xternally the ear is marked by an open tubeâthe external auditory meatus ; the aperture of which is surrounded by a regular circlet of feathers. A'ithin the tube beneath the surface lies the drum or tympanum ; connecting this with the fenestra ovalis of the inner ear is the well-developed columella; the tympanic 'o'lf. 'â %v. ,-ft^. jjjS&q Stock Photo

RMRE06W2–. Outlines of zoology. Zoology. SJTJVSS OA'CUVS. 607 '["lie sense of smell does not seem to be keenly de- veloped in many birds. The nostrils are longitudinal slits overhung by the swollen, more or less sensitive, cere. The sense of hearing is acute. E.xternally the ear is marked by an open tubeâthe external auditory meatus ; the aperture of which is surrounded by a regular circlet of feathers. A'ithin the tube beneath the surface lies the drum or tympanum ; connecting this with the fenestra ovalis of the inner ear is the well-developed columella; the tympanic 'o'lf. 'â %v. ,-ft^. jjjS&q

. Outlines of zoology. Zoology. STRUCTURE OF THE LEECH. 217 It has been shown (Whitman) that the eyes of leeches are serially homologous with the segmental sense organs. At the one extreme there are purely tactile organs, at the other extreme there are purely visual organs, and between these there are compound sense organs, in part tactile and in part visual,—a series which is full of suggestiveness in regard to the evolution of sense organs (cf of the series sensitive set;e in the crayfish. "The visual organs of the leech are not able to form. Fig. 70. -Transverse section of Leech. A. G. Stock Photo

RMRE0E7C–. Outlines of zoology. Zoology. STRUCTURE OF THE LEECH. 217 It has been shown (Whitman) that the eyes of leeches are serially homologous with the segmental sense organs. At the one extreme there are purely tactile organs, at the other extreme there are purely visual organs, and between these there are compound sense organs, in part tactile and in part visual,—a series which is full of suggestiveness in regard to the evolution of sense organs (cf of the series sensitive set;e in the crayfish. "The visual organs of the leech are not able to form. Fig. 70. -Transverse section of Leech. A. G.

. A manual of elementary zoology . Zoology. FROG: NERVOUS SYSTEM AND SENSE ORGANS 81 the size of the pupil can be altered. (4) Immediately behind the iris lies a firm, transparent, subspherical body, the lens, which serves to focus upon the sensitive surface at the back of the eye the light which enters through the pupil. (5) The sensitive surface is provided by the retina, a delicate membrane containing two primary layers, an outer pigment layer of pigmented cells lining the choroid, and an inner retina proper which has at the back of the eye a very complicated structure (Fig. 48, B) and is c Stock Photo

RMRDJ4DR–. A manual of elementary zoology . Zoology. FROG: NERVOUS SYSTEM AND SENSE ORGANS 81 the size of the pupil can be altered. (4) Immediately behind the iris lies a firm, transparent, subspherical body, the lens, which serves to focus upon the sensitive surface at the back of the eye the light which enters through the pupil. (5) The sensitive surface is provided by the retina, a delicate membrane containing two primary layers, an outer pigment layer of pigmented cells lining the choroid, and an inner retina proper which has at the back of the eye a very complicated structure (Fig. 48, B) and is c

. Elements of zoology, to accompany the field and laboratory study of animals. Zoology. ANATOMY AND PHrSIOLOGY OF FCRINODEHMS U5. The nervous system is mainly on the surface of the skin. There is a ring of nervous tissue (Fig. 233,7ierv. r) surround- ing the mouth and sending a branch along each radius (rod. ne.). Each branch controls the movement of the tube-feet of its radius. In sea-urchins a special set of nerves go to the musculature of the jaws. Sense-organs. — The tube-feet are certainly dehcately sensitive to touch in all echinoderms, and in starfishes the ter- minal tentacles seem to Stock Photo

RMRDHCX7–. Elements of zoology, to accompany the field and laboratory study of animals. Zoology. ANATOMY AND PHrSIOLOGY OF FCRINODEHMS U5. The nervous system is mainly on the surface of the skin. There is a ring of nervous tissue (Fig. 233,7ierv. r) surround- ing the mouth and sending a branch along each radius (rod. ne.). Each branch controls the movement of the tube-feet of its radius. In sea-urchins a special set of nerves go to the musculature of the jaws. Sense-organs. — The tube-feet are certainly dehcately sensitive to touch in all echinoderms, and in starfishes the ter- minal tentacles seem to

. Essentials of biology presented in problems. Biology. 406 THE NERVOUS SYSTEM AND ORGANS OF SENSE The Senses. Touch. — In animals having a hard outside covering, such as certain worms, insects, and crustaceans, minute hairs, which are sensitive to touch, are found growing out from the body covering. At the base of these hairs are found nerve cells which send a nerve fiber inward to the central nerv- ous system. Organs of Touch. — In man, the nervous mechanism which governs touch is located in the folds of the dermis or in the skin. Special nerve endings, called the tactile cor- puscles, are f Stock Photo

RMRDYYGJ–. Essentials of biology presented in problems. Biology. 406 THE NERVOUS SYSTEM AND ORGANS OF SENSE The Senses. Touch. — In animals having a hard outside covering, such as certain worms, insects, and crustaceans, minute hairs, which are sensitive to touch, are found growing out from the body covering. At the base of these hairs are found nerve cells which send a nerve fiber inward to the central nerv- ous system. Organs of Touch. — In man, the nervous mechanism which governs touch is located in the folds of the dermis or in the skin. Special nerve endings, called the tactile cor- puscles, are f

. First lessons in zoology. Zoology. HOiV ANIMALS KNOIV THINGS 103 As we proceed higher in the animal scale we find a gradual grouping in definite positions of a number of cells that are specially sensitive to the different influences acting on the organisms, and along with this definite groups of muscular cells and definite nerve pathways for impulses to pass from the sensitive to the motor cells, and more and more complex connections of groups with groups. In the highest organisms we have sense-organs which Sunfisli. Sparrow. Mouse.. Sp. Cd Fig. 69.—Diagram of brains of vetebratc-s; 01 f. Z. Stock Photo

RMRDT4N7–. First lessons in zoology. Zoology. HOiV ANIMALS KNOIV THINGS 103 As we proceed higher in the animal scale we find a gradual grouping in definite positions of a number of cells that are specially sensitive to the different influences acting on the organisms, and along with this definite groups of muscular cells and definite nerve pathways for impulses to pass from the sensitive to the motor cells, and more and more complex connections of groups with groups. In the highest organisms we have sense-organs which Sunfisli. Sparrow. Mouse.. Sp. Cd Fig. 69.—Diagram of brains of vetebratc-s; 01 f. Z.

. Outlines of zoology. Zoology. Fig. 131.—Nervous system of bee.—After Cheshire. A, of larva. B, of adult; a., antenna; vix.t maxilla ; m., mandible ; •w., origin of wing ; 1-5, abdominal ganglia. two last pairs of legs. In the worker there are five pairs of abdominal ganglia, but in the queen and drone only four. The sense organs are the simple and compound eyes, and the antennae, which are furnished with numerous sensitive structures. Alimentary system.—The oesophagus is a narrow tube which runs down the thoracic region. In the abdominal region it expands into the crop or honey-sac. The crop Stock Photo

RMRDP017–. Outlines of zoology. Zoology. Fig. 131.—Nervous system of bee.—After Cheshire. A, of larva. B, of adult; a., antenna; vix.t maxilla ; m., mandible ; •w., origin of wing ; 1-5, abdominal ganglia. two last pairs of legs. In the worker there are five pairs of abdominal ganglia, but in the queen and drone only four. The sense organs are the simple and compound eyes, and the antennae, which are furnished with numerous sensitive structures. Alimentary system.—The oesophagus is a narrow tube which runs down the thoracic region. In the abdominal region it expands into the crop or honey-sac. The crop

. Outlines of zoology. Zoology. SENSE ORGANS. 231 Nervous System. Underneath the ciliated ectoderm lies a network of nerve fibrils, with some ganglionic cells. But besides these diffuse elements there is a pentagon around the mouth, and a nerve along each arm. The system is not separable from the skin. Sense Organs. A red eye spot, sensitive to light, lies on the terminal ossicle at the tip of each arm, and is usually upturned. It. Fig. 75.- -Alimentary system of Starfish. MtJLLER and Troschel.) (After The dorsal surface has been removed ; the digestive c^eca, the stomach, &c., are shown. Stock Photo

RMRE0E6A–. Outlines of zoology. Zoology. SENSE ORGANS. 231 Nervous System. Underneath the ciliated ectoderm lies a network of nerve fibrils, with some ganglionic cells. But besides these diffuse elements there is a pentagon around the mouth, and a nerve along each arm. The system is not separable from the skin. Sense Organs. A red eye spot, sensitive to light, lies on the terminal ossicle at the tip of each arm, and is usually upturned. It. Fig. 75.- -Alimentary system of Starfish. MtJLLER and Troschel.) (After The dorsal surface has been removed ; the digestive c^eca, the stomach, &c., are shown.

. First lessons in zoology. Zoology. loo FIRST LESSONS IN ZOOLOGY sensitive to light; in the internal ear there are certain cells which are affected by sound vibrations; in the nasal passages there is a region in which are cells sensitive to odors; in the skin of the tongue are cells that react to sweet, sour, and bitter liquids; in various parts of the skin are cells sensitive to pressure, heat, and cold. These different kinds of cells affected by different influences are called sense-cells. Now what the animal sees, hears, touches, etc., deter- mines its motions, and we find that the sense-c Stock Photo

RMRDT4NY–. First lessons in zoology. Zoology. loo FIRST LESSONS IN ZOOLOGY sensitive to light; in the internal ear there are certain cells which are affected by sound vibrations; in the nasal passages there is a region in which are cells sensitive to odors; in the skin of the tongue are cells that react to sweet, sour, and bitter liquids; in various parts of the skin are cells sensitive to pressure, heat, and cold. These different kinds of cells affected by different influences are called sense-cells. Now what the animal sees, hears, touches, etc., deter- mines its motions, and we find that the sense-c

. Outlines of the comparative physiology and morphology of animals. Anatomy, Comparative; Physiology, Comparative. SENSE ORGANS. 20I. case of papillae each one contains a tactile bulb. A sen- sory fiber enters and terminates in each bulb. These are therefore end organs or terminals. The epidermis proper is not sensitive; it only protects the sensitive dermis from too rude con- tact. Minimum Tactile.â -n We have already alluded to this subject in compar- ing sight with touch (page FIG. 128.-Tactilecorpuscles : A, from ^^ We rePeat jt heI"e in the finger of a man ; B, from the its proper Co Stock Photo

RMRE075T–. Outlines of the comparative physiology and morphology of animals. Anatomy, Comparative; Physiology, Comparative. SENSE ORGANS. 20I. case of papillae each one contains a tactile bulb. A sen- sory fiber enters and terminates in each bulb. These are therefore end organs or terminals. The epidermis proper is not sensitive; it only protects the sensitive dermis from too rude con- tact. Minimum Tactile.â -n We have already alluded to this subject in compar- ing sight with touch (page FIG. 128.-Tactilecorpuscles : A, from ^^ We rePeat jt heI"e in the finger of a man ; B, from the its proper Co

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