Multiple ChoiceMore than one choice may apply.Which layer of the artery wall thickens most in atherosclerosis?a. Tunica mediab. Tunica intimac. Tunica adventitiad. Tunica externa

Which blood vessel layer contains the greatest proportion of collagen?

Which blood vessel tunic has the most active role in controlling blood flow?

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

b. The tunica intima is composed of a sheet of endothelium, connective tissue, and the internal elastic lamina.

Collagen vascular diseases weaken the collagen in the tunica externa of blood vessels. Predict the effects of such a disease.

Which of the following statements is true?