The essentials of healthA text-book of anatomy, physiology, hygiene, alcohol, and narcotics . Fig. 49. Longitudinal sectionof the femur. The spongy, orcancellous bone shows at the ends ;while the compact, hollow boneforms the shaft. 158 THE ESSENTIALS OF HEALTH. the cancellous tissue. The smaller bones and the flatbones are not hollow ; they have an outer layer of com-pact bone, within which is the spongy bone, or cancel-lated tissue.. Fig. 50. Transverse section of the femur. The section to the left is fromthe shaft; to the right is from the head or upper portion of the femur. The Marrow. The
Image details
Contributor:
The Reading Room / Alamy Stock PhotoImage ID:
2AWFGM1File size:
7.1 MB (313.8 KB Compressed download)Releases:
Model - no | Property - noDo I need a release?Dimensions:
1926 x 1297 px | 32.6 x 22 cm | 12.8 x 8.6 inches | 150dpiMore information:
This image is a public domain image, which means either that copyright has expired in the image or the copyright holder has waived their copyright. Alamy charges you a fee for access to the high resolution copy of the image.
This image could have imperfections as it’s either historical or reportage.
The essentials of healthA text-book of anatomy, physiology, hygiene, alcohol, and narcotics . Fig. 49. Longitudinal sectionof the femur. The spongy, orcancellous bone shows at the ends ;while the compact, hollow boneforms the shaft. 158 THE ESSENTIALS OF HEALTH. the cancellous tissue. The smaller bones and the flatbones are not hollow ; they have an outer layer of com-pact bone, within which is the spongy bone, or cancel-lated tissue.. Fig. 50. Transverse section of the femur. The section to the left is fromthe shaft; to the right is from the head or upper portion of the femur. The Marrow. The large central cavity of the long-bones, and all the spaces in the spongy bone, are filledwith a yellowish or reddish substance, called marrow.It consists principally of fat cells and marrow cells.These marrow cells doubtless give rise to some of thered corpuscles of the blood. There are other sources oforigin for these corpuscles, but it is well established thatsome of them originate in this way. Microscopic Structure. If a longitudinal piece of bonebe ground very thin, and then examined with a micro-scope, a number of canals will be seen parallel to thelong axis of the bone. These canals unite with eachother, as shown in Fig. 51, by short branches extendingacross nearly at right angles. A cross section of boneshows that these canals are circular or oval in shape, as THE BONES. L59 illustrated in Pig, 52, These are the Haversi