Question

multiple choice 5 points
which of the following is the small, central opening of blood vessels through which the blood flows?
capillary
endothelium
lumen
valve

9 multiple choice 5 points
during a cardiac catheterization, the doctor notes that one of the coronary arteries has stenosis, or a condition of:
hardness
narrowness; constriction
a thrombus
widening

10 multiple choice 5 points
which word refers to elevated blood pressure?
hypotension
hypertension
hypercholesterolemia
hyperlipidemia

Explanation:

• For question 8, the lumen is the small central opening in blood - vessels through which blood flows. Capillaries are a type of blood - vessel, endothelium is the inner lining of blood - vessels, and valves prevent back - flow of blood.
• For question 9, stenosis refers to a condition of narrowness or constriction in blood vessels. It is not related to hardness, a thrombus is a blood clot, and widening is the opposite of stenosis.
• For question 10, hypertension is the term for elevated blood pressure. Hypotension is low blood pressure, hypercholesterolemia is high cholesterol levels, and hyperlipidemia is high lipid levels.

Answer:

1. C. lumen
2. B. narrowness; constriction
3. B. hypertension