Inquiry into Life 14th Edition by Sylvia Mader,Michael Windelspecht

تمرين 13

Choose the best answer for each question.
The best explanation for the slow movement of blood in capillaries is
A) skeletal muscles press on veins, not capillaries.
B) capillaries have much thinner walls than arteries.
C) there are many more capillaries than arterioles.
D) venules are not prepared to receive so much blood from the capillaries.
E) All of these are correct.