5 Questions
Explain the structure of the tunica interna (intima) in blood vessels.
The tunica interna (intima) is the innermost layer of blood vessels, composed of simple squamous epithelium. It remains unchanged in thickness throughout the circulation pathway.
What are the two types of arteries and what are their functions?
The two types of arteries are elastic arteries and muscular arteries. Elastic arteries have a large diameter and help propel blood when ventricles are relaxed. Muscular arteries branch off of elastic arteries and distribute blood to large areas of the body.
What is the function of arterioles in controlling blood flow?
Arterioles are capable of great vasoconstriction and vasodilation to control the rate of blood flow to different areas of the body.
Describe the structure of arterioles.
Arterioles are small vessels that branch off from arteries. They have a thick tunica externa and media with a narrow, circular lumen.
What are the functions of blood vessels in the circulatory system?
The functions of blood vessels include serving as a conduit for blood flow and being the site of exchange of nutrients and wastes.
Test your knowledge about blood vessels with this quiz. Learn about their functions, structure, and the different layers that make up their composition.
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