Question

multiple choice question
the smallest venules are called ______ venules.
o postcapillary
o precapillary
o sinus

Explanation:

Postcapillary venules are the smallest venules. They play a role in the microcirculation and are located immediately after the capillaries. Precapillary refers to structures related to arterioles before capillaries, and sinus is a different type of vascular - like structure not related to the smallest venules.

Answer:

A. postcapillary