Question

test, midterm, final content
page 38 of 50
question 38
a closed sac with a distinct membrane that contains fluid is called a(n):
a) comedo.
b) abrasion.
c) furuncle.
d) cyst.
e) carbuncle.

Explanation:

To solve this, we analyze each option:

• Option A: A comedo is a plug of sebum in a hair follicle, not a closed sac with fluid - containing membrane.
• Option B: Abrasion is a wound caused by scraping, not a sac with fluid.
• Option C: A furuncle is a boil, an infected hair follicle, not a closed sac with fluid - containing membrane.
• Option D: A cyst is defined as a closed sac with a distinct membrane that contains fluid (or other material).
• Option E: A carbuncle is a cluster of boils, not a single closed sac with fluid - containing membrane.

Answer:

D. cyst