BIOD 151 MODULE 2 EXAM (PORTAGE
LEARNING) EXAM QUESTIONS WITH
CORRECT ANSWERS 2026/2027 LATEST
UPDATE
Explain at least two differences between type I and type II
alveolar cells.
A. Type I form the very thin simple squamous epithelium of
the alveoli in junction with the capillaries. Make up roughly
95% of alveolar epithelial cells.
B. Type II produce and secrete pulmonary surfactant which
is needed throughout alveolar surface to keep the alveoli open.
In addition, type II cells divide to replace damaged type I
cells. Make up roughly 5% alveolar epithelial cells.
True/False: During inhalation, negative pressure draws air
into the lungs.
True.
, True/False: The vestibule is lined with typical respiratory
epithelium.
False - Stratified squamous epithelium is found in the
vestibule.
True/False: Because of diffusion, oxygen naturally moves out
of the blood and into the lungs.
False.
True/False: The bronchioles are surrounded by capillaries for
gas exchange.
False.
How many lobes does the left human lung have?
LEARNING) EXAM QUESTIONS WITH
CORRECT ANSWERS 2026/2027 LATEST
UPDATE
Explain at least two differences between type I and type II
alveolar cells.
A. Type I form the very thin simple squamous epithelium of
the alveoli in junction with the capillaries. Make up roughly
95% of alveolar epithelial cells.
B. Type II produce and secrete pulmonary surfactant which
is needed throughout alveolar surface to keep the alveoli open.
In addition, type II cells divide to replace damaged type I
cells. Make up roughly 5% alveolar epithelial cells.
True/False: During inhalation, negative pressure draws air
into the lungs.
True.
, True/False: The vestibule is lined with typical respiratory
epithelium.
False - Stratified squamous epithelium is found in the
vestibule.
True/False: Because of diffusion, oxygen naturally moves out
of the blood and into the lungs.
False.
True/False: The bronchioles are surrounded by capillaries for
gas exchange.
False.
How many lobes does the left human lung have?
