Human Anatomy
9th Edition
ISBN: 9780135168059
Author: Marieb, Elaine Nicpon, Brady, Patricia, Mallatt, Jon
Publisher: Pearson Education, Inc.,
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Textbook Question
Chapter 20, Problem 1CYU
What structural features of capillaries make them well suited for their function of nourishing body tissues and removing waste products?
Expert Solution & Answer
Summary Introduction
To review:
The characteristics of capillaries that enable them to nourish corresponding body tissues and to remove waste from them.
Introduction:
The human circulatory system is associated with the transportation of nutrients and gases throughout the body and it has a proper channel to perform this function. There are various structures associated with this channel and the smallest structures are known as the capillaries.
Explanation of Solution
The smallest blood vessels in the human body are capillaries with a diameter of 8 – 10 micrometers. The capillaries possess gaps of unjointed endothelial cells along with tight junctions. These gaps enable gaseous exchange and transportation across the capillaries. The gap junctions are of variable size and number in various kinds of capillaries enabling their proper functioning at respective locations.
Capillaries provide necessary nutrients and oxygen to the tissues and in turn eliminate carbon dioxide and nitrogenous waste products deposited in them. Some capillaries in the lungs enable oxygen to enter into the blood. Capillaries in small intestine receive the digested food. The capillaries present in the kidneys help to eliminate nitrogenous waste products.
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Students have asked these similar questions
Watch this video (http://openstaxcollege.org/l/ capillaryfunct) to explore capillaries and how they function in the body. Capillaries are never more than 100 micrometers away. What is the main component of interstitial fluid?
Which of the following statements concerning capillaries is TRUE?
A) Capillaries are composed of a single layer of endothelial cells surrounded by a basement membrane
B) Thoroughfare channels drain directly into venules
C) Metarterioles branch directly off arterioles
D) Both A & B
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What is the main function of capillaries? What are the three
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Chapter 20 Solutions
Human Anatomy
Ch. 20 - What structural features of capillaries make them...Ch. 20 - Prob. 2CYUCh. 20 - Prob. 3CYUCh. 20 - Prob. 4CYUCh. 20 - Prob. 5CYUCh. 20 - Prob. 6CYUCh. 20 - Which vessel do you palpate to feel a pulse in...Ch. 20 - Name the vessels that branch off the abdominal...Ch. 20 - Prob. 9CYUCh. 20 - Prob. 10CYU
Ch. 20 - Prob. 11CYUCh. 20 - Prob. 12CYUCh. 20 - How does elevated blood glucose associated with...Ch. 20 - Prob. 14CYUCh. 20 - Prob. 15CYUCh. 20 - Prob. 1RQCh. 20 - Prob. 2RQCh. 20 - Prob. 3RQCh. 20 - Prob. 4RQCh. 20 - Prob. 5RQCh. 20 - Prob. 6RQCh. 20 - Prob. 7RQCh. 20 - Prob. 8RQCh. 20 - The following sequence traces the flow of...Ch. 20 - Prob. 10RQCh. 20 - The inferior mesenteric artery supplies the (a)...Ch. 20 - Prob. 12RQCh. 20 - Prob. 13RQCh. 20 - An accident victim sustained a puncture wound in...Ch. 20 - Prob. 15RQCh. 20 - Prob. 16RQCh. 20 - (a) What structural features are responsible for...Ch. 20 - Prob. 18RQCh. 20 - Prob. 19RQCh. 20 - Sketch the arterial circle at the base of the...Ch. 20 - Prob. 21RQCh. 20 - Prob. 22RQCh. 20 - Prob. 23RQCh. 20 - Prob. 24RQCh. 20 - Differentiate between arteriosclerosis and...Ch. 20 - A pulse can be felt in the following arteries:...Ch. 20 - In an eighth-grade health class, the teacher...Ch. 20 - Prob. 2CRCAQCh. 20 - Prob. 3CRCAQCh. 20 - Prob. 4CRCAQCh. 20 - Prob. 5CRCAQCh. 20 - Prob. 6CRCAQCh. 20 - Occasionally, either the ductus arteriosus or the...Ch. 20 - Prob. 8CRCAQ
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- Blood flows from the heart (specifically, the left ventricle) into the aorta to feed the rest of the body oxygen. As blood flow moves from the ascending aorta and downward to the abdominal aorta, some of the volume is directed through a branching network. As the blood reaches the pelvic region, there is a bifurcation, as shown in figure, into the left and right common iliac arteries. This bifurcation is symmetrical but the common iliac vessels are not the same diameter. Given that the kinematic viscosity of blood is 4 cSt (centistokes), the abdominal aorta’s diameter is 15 mm, the right common iliac artery’s diameter is 10 mm, and the left common iliac artery’s diameter is 8 mm, determine the mean flow rate through the right common iliac artery if the abdominal aorta’s mean velocity is 30 cm/s and the left common iliac artery’s mean velocity is 40 cm/s.arrow_forwardHow is the anatomy of capillaries and capillary beds well suited to their function?arrow_forwardWhat force is responsible for moving fluids out of capillaries at the arteriole end and moving fluids back into the capillary at the venule end? What happens to fluids that do not re-enter the capillaries?arrow_forward
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- A classmate says that without specialized cells, the heart wouldn’t be able to help other organs and body system to perform. Based on your understanding of body organization, is there evidence to support her claim? (a) Yes, without red blood cells, the heart wouldn’t be able to deliver oxygen to other organs (b) somewhat, because the heart is constructed from specialized tissues, such as muscle tissue, that help it to function but the cells are no different than other body cells (c) no, this in inaccurate because it is the brain, not the heart that help the other organs in the body to function (d) No, because the cells in the heart are not specialized compared with other organs in the bodyarrow_forwardWhat are the functions of arteries and capillaries?arrow_forwardWhat are the physical and physiological differences between an artery and a vein?arrow_forward
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