16. A rise in blood cholesterol may lead to a deposition of cholesterol on the walls of blood vessels. This causes the arteries to lose their elasticity and get stiffened. This is called: (A) hypertension (B) hypotension (C) arteriosclerosis (D) systolic pressure

7. What is the function of the cilia in the trachea and bronchi? (A) to sweep air into and out of the lungs (B) to increase the surface area for gas exchange (C) to vibrate when air is exhaled to produce sounds (D) to dislodge food that may have slipped past the epiglottis (E) to sweep mucus with trapped particles up and out of the respiratory tract

16. A rise in blood cholesterol may lead to a deposition of cholesterol on the walls of blood vessels. This causes the
arteries to lose their elasticity and get stiffened. This is called:

(A) hypertension

(B) hypotension

(C) arteriosclerosis

(D) systolic pressure

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