5 Questions
Which of the following statements about precapillary sphincters is false?
They are regulated by the nervous system to control blood flow.
What is the primary function of the tunica media in blood vessels?
To provide structural support and regulate blood pressure.
Which of the following tissues does not have capillaries?
Epidermis
What is the role of precapillary sphincters in regulating blood flow?
They dilate to increase blood flow to active tissues.
Which of the following statements about the tunica media is correct?
The tunica media contains smooth muscle cells that regulate blood flow through precapillary sphincters.
Test your knowledge on the structure and functions of arteries, including the presence of smooth muscle and nerve supply. Learn about the layers of large arteries and arterioles, as well as the importance of fibrous connective tissue in preventing ruptures.
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