Which of the following types of blood vessels allow the exchange of substances directly between the blood and the cells of the body?

Question

Quizplus · Accepted Answer

Capillaries are the smallest blood vessels in the body, with thin walls that allow for the exchange of substances like oxygen, nutrients, and waste products directly between the blood and the cells of the body. Veins carry blood back to the heart, while arterioles are small branches of arteries that lead to capillaries. Alveoli are tiny air sacs in the lungs where gas exchange occurs between the air and the blood.

Which of the Following Types of Blood Vessels Allow the Exchange