What is present in arterioles that is NOT present in capillaries?
A) white blood cells and platelets
B) carbon dioxide
C) a lining of endothelial cells
D) circular smooth muscle cells

Question

Quizplus · Accepted Answer

Arterioles have smooth muscle cells that capillaries lack, allowing for regulation of blood flow and pressure. White blood cells and platelets can be present in both arterioles and capillaries. Carbon dioxide is transported in the blood and can be found in both arterioles and capillaries. Both arterioles and capillaries have a lining of endothelial cells.

What Is Present in Arterioles That Is NOT Present in Capillaries