Precapillary sphincters will
A)control blood flow into the true capillaries.
B)cause blood to flow directly from the metarteriole into the postcapillary venule.
C)open when the tissue needs nutrients.
D)close when the tissue's needs have been met.
E)All of these answers are correct.

Question

Quizplus · Accepted Answer

Precapillary sphincters are muscular structures that control blood flow into the true capillaries. They open when the tissue needs nutrients and close when the tissue's needs have been met, causing blood to flow directly from the metarteriole into the postcapillary venule. Therefore, all of these answers are correct.

Precapillary Sphincters Will