VASCULAR
CAPILLARIES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -True capillaries form the bulk of the capillary bed. They branch away from a metarteriole at its arteriole end and return to merge with the metarteriole at its venule end (thoroughfare channel). Some true capillaries connect directly from an arteriole to a metarteriole or venule.
Detailed explanation-2: -Most capillaries are only about 8 to 10 micrometers in diameter (a micrometer is 0.001 mm). They’re so tiny that red blood cells have to pass through in a single file line. Capillaries contain two layers of cells: Endothelial cells are inside the capillary.
Detailed explanation-3: -Continuous capillaries. These are the most common types of capillaries. Fenestrated capillaries. Fenestrated capillaries are “leakier” than continuous capillaries. Sinusoid capillaries.