Concept explainers
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.
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.
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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Chapter 22 Solutions
EBK HUMAN ANATOMY
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- Blood flow through the capillaries is steady despite the rhythmic pumping action of the heart because of the (a) elasticity of the large arteries only, (b) elasticity of all the arteries, (c) ligamentum arteriosum, (d) venous valves.arrow_forwardThe obturator vein drains deoxygenated blood from the hip joint and medial thigh into the (A) external iliac vein (B) femoral vein (incorrect) (C) popliteal vein (D) internal iliac vein (E) inferior vena cavaarrow_forwardThe blood vessels that collect blood from all tissues and organs and return it to the heart are the, (a) veins. (b) arteries. (c) capillaries. (d) arterioles.arrow_forward
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