The label ii indicates the iv Select one a. aorta. b. vena cava c. pulmonary art

Question

The label ii indicates the iv Select one a. aorta. b. vena cava c. pulmonary artery. x d. pulmomary vein Why does the speed of blood slow down in the capillaries? Select one: a. The arteries branch into arterioles and numerous small capillaries whose total cross-sectional area is greater than that of the artery, which results in a decreased rate of blood flow. b. Initially, the pressure in the capillaries is the same as it is in the arteries, but because there is less surface area, the blood is forced to slow down. C. Blood flow slows down in the capillaries because capillaries are very narrow and less blood can pass through at a time. X d. The Law of Continuity explains the slower blood flow in the capillaries as a result of less cross-sectional area to pass through

Explanation / Answer

1. b. Vena cava ( superior )

2. b. Initially the perssure in the capillaries is the same as it is in the arteries, but because there is less surface area , the blood is forced to slow down.

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