BIOD 151 EXAM 2| QUESTIONS AND
CORRECT ANSWERS| VERIFIED BY
EXPERT| NEWLY UPDATED 2025| RATED
100% ACCURATE.
How many lobes does the right lung have?
ANSWER ✔✔ Three
Air (and not food) pass in which of the following areas:
A. Esophagus
B. Nasopharynx
C. Oropharynx
D. Both A. and C.
ANSWER ✔✔ Nasopharynx
Air and food pass in which one of the following areas:
ANSWER ✔✔ Oropharynx
Ring of cartilage line much of the respiratory tract. In which of the following would
cartilage not be found?
Trachea
Larynx
Bronchi
Alveoli
ANSWER ✔✔ Alveoli
Be able to label the following on a diagram:
a. Nasal Cavity
b. Oral Cavity
, c. Soft Pallet
d. Epiglottis
e. Glottis
f. Trachea
g. Esophagus
h. Tongue
ANSWER ✔✔ (Labels to be marked on the diagram as indicated above)
What happens to the epiglottis during swallowing?
ANSWER ✔✔ During 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?
ANSWER ✔✔ Surfactant 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 alveolar cells.
ANSWER ✔✔ Type 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 the 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?
ANSWER ✔✔ True: Inhale - causes air to rush inside the lungs because it wants to move
from an 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.
CORRECT ANSWERS| VERIFIED BY
EXPERT| NEWLY UPDATED 2025| RATED
100% ACCURATE.
How many lobes does the right lung have?
ANSWER ✔✔ Three
Air (and not food) pass in which of the following areas:
A. Esophagus
B. Nasopharynx
C. Oropharynx
D. Both A. and C.
ANSWER ✔✔ Nasopharynx
Air and food pass in which one of the following areas:
ANSWER ✔✔ Oropharynx
Ring of cartilage line much of the respiratory tract. In which of the following would
cartilage not be found?
Trachea
Larynx
Bronchi
Alveoli
ANSWER ✔✔ Alveoli
Be able to label the following on a diagram:
a. Nasal Cavity
b. Oral Cavity
, c. Soft Pallet
d. Epiglottis
e. Glottis
f. Trachea
g. Esophagus
h. Tongue
ANSWER ✔✔ (Labels to be marked on the diagram as indicated above)
What happens to the epiglottis during swallowing?
ANSWER ✔✔ During 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?
ANSWER ✔✔ Surfactant 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 alveolar cells.
ANSWER ✔✔ Type 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 the 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?
ANSWER ✔✔ True: Inhale - causes air to rush inside the lungs because it wants to move
from an 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.
