HUMAN ANATOMY-ALC W/ACCESS
HUMAN ANATOMY-ALC W/ACCESS
9th Edition
ISBN: 9780134888729
Author: Martini
Publisher: PEARSON
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Concept explainers

Question
Chapter 22, Problem 1RFT
Summary Introduction

To review:

Match the term elastic arteries with the most closely related descriptions given below:

deliver blood to the head

transport blood to the body’s internal organs and skeletal muscles

arteries whose smooth muscles do not contract

stationary blood clot

network of capillaries

arteries that supply a capillary network

supply blood to the upper limbs

small air sacs

supply blood to the lower limbs

collect blood from the kidneys

Introduction:

Arteries can be defined as the blood vessels that carry oxygenated blood, the only exception being the pulmonary artery. The body consists of three major types of arteries. These main arteries are muscular arteries, small arterioles, and elastic arteries. These arteries vary in thickness and diameter.

Expert Solution & Answer
Check Mark

Explanation of Solution

Elastic arteries are large vessels, which are having the luminal diameter of up to 2.5 cm. They perform the function of transport of blood away from the heart. The intima layer of this artery is thick and is made up of endothelial cells, below which lies the basal lamina, which consists of elastic connective tissue and collagen fibers.

The elastic artery walls are tough due to the presence of more elastic fibers and less smooth muscles, making them tolerant of the changes in pressure during the cardiac cycle. During local or sympathetic stimulation, these smooth muscles do not contract at all.

Conclusion

Therefore, it can be concluded that the term elastic arteries can be correctly matched with option (c) arteries whose smooth muscles do not contract.

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