What happens to the amount of cilia lining the inner walls of the respiratory tract as it moves down from the upper conducting zone to the lower respiratory zone?

A) atrophies
B) increases
C) thickens
D) no change
E) decreases


Ans: E) decreases

Biology & Microbiology

You might also like to view...

The main regulator of calcium blood levels is

a. the parathyroid glands. b. the thyroid glands. c. the hypothalamus. d. the anterior pituitary gland. e. the posterior pituitary gland

Biology & Microbiology

Which disease can be identified by the presence of elementary bodies inside host cells?

a) Psittacosis b) Pontiac fever c) Melioidosis d) Legionellosis

Biology & Microbiology

fat is created in which organelle?

What will be an ideal response?

Biology & Microbiology

What is the major lipid found in membranes?

A. cholesterol B. phospholipids C. steroids D. saturated fatty acids E. triglycerides

Biology & Microbiology