Which cells within the alveoli form a single thin epithelial layer, located very near the capillaries, ensuring efficient gas exchange occurs between the air and the blood?

A. alveolar macrophage
B. type I alveolar cells
C. type II alveolar cells
D. goblet cells


Ans: B. type I alveolar cells

Anatomy & Physiology

You might also like to view...

If a cell were placed in a solution of 0.15 M NaCl, it would shrink.

Answer the following statement true (T) or false (F)

Anatomy & Physiology

Children receive a vaccine to protect them against _________________________, a disease characterized by severe coughing attacks.?

Fill in the blank(s) with correct word

Anatomy & Physiology

Troponin

a. binds with calcium to allow sarcomere shortening b. breaks down myosin cross bridges c. is an enzyme in the sarcomere d. forms the boundaries of a sarcomere e. has an ATPase site

Anatomy & Physiology

Which skull canal contains blood vessels that drain blood from the skull?

A. External auditory meatus B. Nasolacrimal canal C. Foramen ovale D. Jugular foramen E. Carotid canal

Anatomy & Physiology