Primary lessons in human physiology and hygiene for schools
Book Description
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1896 Excerpt: ...because the blood flows through them, or, as we say, because they carry blood. Some of the veins are large, others are very small--so small that you cannot see them. Besides the veins there a...
MoreThis historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1896 Excerpt: ...because the blood flows through them, or, as we say, because they carry blood. Some of the veins are large, others are very small--so small that you cannot see them. Besides the veins there are other blood vessels which are called arteries. about as many arteries as veins, and they are about the same size. We cannot see the large arteries in the hand because they are covered up by the muscles, or concealed between the bones. But there are large arteries running up the side of the neck which, in some persons, can be seen underneath the skin. On the lower side of the wrist, also, there is an artery which is quite close to the skin. "LOOK AT THE BACK OF YOUR HAND." There are Look at your wrists, and see whether you can not perceive this artery. We will learn more about it after a while. The blood in most of the veins is of a bluish tint. The blood in most of the arteries is bright red. Connecting the veins with the arteries there are other blood-vessels which we call capillaries. The word capillary means hair-like; but these vessels are much smaller than hairs, and they are a good deal like veins in their structure. It is in these capillaries that the wonderful process of tearing down and building up is all the time going on. There are blood-vessels in all parts of the body. Stick the point of the finest needle into a muscle and it will be sure to strike a blood-vessel--either a capillary, a vein, or an artery. Now, you must know that the blood is all the time flowing through the arteries, the capillaries, and the veins. It never stops a moment, but flows rapidly to and from every part of the body. Its course is through the arteries first; from the arteries it passes into the millions of tiny little capillaries; from the capillaries it is emptied int...
Publisher | RareBooksClub.com |
Binding | Paperback (11 editions) |
Reading Level | Uncategorized
|
# of Pages | 24 |
ISBN-10 | 1130743292 |
ISBN-13 | 978-1130743296 |
Publication Date | 03/06/2012 |
You must be a member of JacketFlap to add a video to this page. Please
Log In or
Register.
View Winfred Eugene Baldwin's profile