BIOD 151 EXAM 2 EXAM WITH
CORRECT QUESTIONS AND ANSWERS
2025
How many lobes does the right lung have? - CORRECT-ANSWERSThree
Air (and not food) pass in which of the following areas:
Esophagus
Nasopharynx
Oropharynx
Both A. and C. - CORRECT-ANSWERSNasopharynx
Air and food pass in which one of the following areas: - CORRECT-
ANSWERSOropharynx
Ring of cartilage line much of the respiratory tract. In which of the following would
cartilage not be found?
Trachea
Larynx
Bronchi
Alveoli - CORRECT-ANSWERSAlveoli
Be able to label the following on a diagram - CORRECT-ANSWERSa. Nasal Cavity
b. oral cavity
c. soft pallet
d. epiglottis
e. glottis
, f. trachea
g. esophagus
h. tongue
What happens to the epiglottis during swallowing? - CORRECT-ANSWERSDuring
swallowing the epiglottis moves inferiorly to cover the trachea. This prevents food and
liquid from entering the lungs (aspiration).
A premature baby is having difficulty producing surfactant. Explain problems that may
occur and why? - CORRECT-ANSWERSSurfactant covers the lumina and helps keep
the alveoli from sticking together during exhalation. Breathing difficulty will occur due
to this because alveoli are not functioning properly
Explain the difference between type I and type II alveoli cells. - CORRECT-
ANSWERSType I alveolar cells: make up about 95% of alveolar epithelium and form a
very thin, simple squamous epithelium of the alveoli in junction with capillaries
Type II alveolar cells: Make up 5%, dispersed throughout the type I cells, produce and
secrete pulmonary surfactant on alveolar surface so they can stay open, can divide to
replace damaged Type I cells.
True/ False: Negative pressure is used to move air into the lungs? - CORRECT-
ANSWERSTrue: Inhale - causes air to rush inside the lungs because it wants to move
from area of high pressure to an area of low pressure
Exhale - causes air to rush outside lungs because it wants to move from an area of high
pressure to an area of low pressure
True/False: During inhalation the diaphragm contracts to pull the lungs open? -
CORRECT-ANSWERSTrue
CORRECT QUESTIONS AND ANSWERS
2025
How many lobes does the right lung have? - CORRECT-ANSWERSThree
Air (and not food) pass in which of the following areas:
Esophagus
Nasopharynx
Oropharynx
Both A. and C. - CORRECT-ANSWERSNasopharynx
Air and food pass in which one of the following areas: - CORRECT-
ANSWERSOropharynx
Ring of cartilage line much of the respiratory tract. In which of the following would
cartilage not be found?
Trachea
Larynx
Bronchi
Alveoli - CORRECT-ANSWERSAlveoli
Be able to label the following on a diagram - CORRECT-ANSWERSa. Nasal Cavity
b. oral cavity
c. soft pallet
d. epiglottis
e. glottis
, f. trachea
g. esophagus
h. tongue
What happens to the epiglottis during swallowing? - CORRECT-ANSWERSDuring
swallowing the epiglottis moves inferiorly to cover the trachea. This prevents food and
liquid from entering the lungs (aspiration).
A premature baby is having difficulty producing surfactant. Explain problems that may
occur and why? - CORRECT-ANSWERSSurfactant covers the lumina and helps keep
the alveoli from sticking together during exhalation. Breathing difficulty will occur due
to this because alveoli are not functioning properly
Explain the difference between type I and type II alveoli cells. - CORRECT-
ANSWERSType I alveolar cells: make up about 95% of alveolar epithelium and form a
very thin, simple squamous epithelium of the alveoli in junction with capillaries
Type II alveolar cells: Make up 5%, dispersed throughout the type I cells, produce and
secrete pulmonary surfactant on alveolar surface so they can stay open, can divide to
replace damaged Type I cells.
True/ False: Negative pressure is used to move air into the lungs? - CORRECT-
ANSWERSTrue: Inhale - causes air to rush inside the lungs because it wants to move
from area of high pressure to an area of low pressure
Exhale - causes air to rush outside lungs because it wants to move from an area of high
pressure to an area of low pressure
True/False: During inhalation the diaphragm contracts to pull the lungs open? -
CORRECT-ANSWERSTrue
