Which of the following structures help direct blood flow forward and prevent the backflow of blood within the heart?
a. Septa
b. The coronary arteries
c. The atrioventricular valves
d. The pulmonary vein and the pulmonary artery
Question 2
The walls of the capillaries are only one cell thick. This allows the exchange of nutrients and oxygen and waste products. The capillaries serve as the bridge between:
a. arterioles and venules.
b. the atrium right and the left atrium.
c. the pulmonary vein and the pulmonary artery.
d. arteries and veins.
A treatment for blocked blood vessels.
Diabetes mellitus. The metabolic disease diabetes mellitus, with symptoms of polydipsia, polyuria, a
Internal structures at the front of the eye.
Red blood cells with normal hemoglobin, like the three similar ones, are smooth and round
Velocity of Blood Flow
Plasmodium parasites (arrow) attacking and infecting red blood cells. Infection by Plasmodium causes