What do the nasal cavity, mouth, and urinary system have in common?
A) The outer layers remain intact for many days.
B) They are lined with mucous membranes.
C) They are lined with tightly packed dead cells.
D) They have roles in excretion of waste products.
E) They are poorly vascularized.

Question

Quizplus · Accepted Answer

They are all lined with mucous membranes, which help protect and lubricate the surfaces.

What Do the Nasal Cavity, Mouth, and Urinary System Have