Lessons in Elementary Physiology
Format: Paperback
ISBN13: 9780217498333
Paperback|9780217498333
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Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: ventral (or back and front) aspects, the two halves would almost exactly resemble one another. 9. One-half of the body, divided in the manner described (Fig. i, A), would exhibit in the trunk, the cut faces of thirty-three bones, joined together by a very strong and tough substance into a long column, which lies much nearer the dorsal (or back) than the -ventral (or front) aspect of the body. The bones thus cut through are called the bodies of the vertebra. They separate a long, narrow canal, called the spinal canal, which is placed upon their dorsal side, from the spacious chamber of the chest and abdomen, which lies upon their ventral side. There is no direct communication between the dorsal canal and the ventral cavity. The spinal canal contains a long white cord?the spinal cord?which is an important part of the nervous system. The ventral chamber is divided into the two subordinate cavities of the thorax and abdomen by a remarkable, partly fleshy and partly membranous, partition, the diaphragm (Fig. i, D which is concave towards the abdomen, and convex towards the thorax. The alimentary canal (Fig. i, A I.) traverses these cavities from one end to the other, piercing the diaphragm. So does a long double series of distinct masses of nervous substance, which are called ganglia, are connected together by nervous cords, and constitute the so-called sympathetic (Fig. i, Sy.). The abdomen contains, in addition to these parts, the two kidneys, one placed against each side of the vertebral column, the liver, the pancreas or sweetbread and the spleen. The thorax incloses, besides its segment of the alimentary canal and of the sympathetic, the heart and the two lungs. The latter are placed one on each side of the heart, which lies nearly in the middle of the thorax. Where t...
| ISBN-13 | 9780217498333 |
|---|---|
| ISBN-10 | 0217498337 |
| Weight | 1.50 Pounds |
| Dimensions | 9.00 x 6.00 x 1.04 In |
| List Price | $23.74 |
| Format | Paperback |
|---|---|
| Pages | 466 pages |
| Publisher | |
| Published On | 2009-08-01 |
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