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Questions and Answers
What is the function of precapillary sphincters?
What is the function of precapillary sphincters?
- Act as precapillary valves
- Control blood flow into the metarterioles
- Facilitate exchange of gases in the capillary bed
- Regulate blood flow into the true capillaries (correct)
What is the structure that lacks smooth muscle cells and merges with the postcapillary venule?
What is the structure that lacks smooth muscle cells and merges with the postcapillary venule?
- Arteriole
- Thoroughfare channel (correct)
- Capillary bed
- Metarteriole
What type of vessels lack smooth muscle cells but may have pericytes present?
What type of vessels lack smooth muscle cells but may have pericytes present?
- Arterioles
- True capillaries (correct)
- Venules
- Metarterioles
What are the smaller branches formed by arterioles supplying a capillary bed?
What are the smaller branches formed by arterioles supplying a capillary bed?
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What is the network of anastomosing capillaries between an arteriole and a venule called?
What is the network of anastomosing capillaries between an arteriole and a venule called?
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