BIOD 151 Study Guide Exam Questions
with Correct Answers
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 - Answer-a. 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? - 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 alveoli 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 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 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? - Answer-
True
True/False: During inhalation the rib cage lifts in an upward motion to open and expand
the lungs - Answer-True
True/False: as the thoracic cavity expands and the lung volume increase the density of
gases filing the lungs decreases? - Answer-True
Boyles law = high volume in container = lower pressure in container. Pressure and
density have a direct relationship
True/False: when the diaphragm rises, thoracic pressure increases and air naturally
flows out of the lungs. - Answer-Trie (air naturally flows out of the lungs because of the
pressure difference.
Boyles law states that gas volume is:
a. directly proportional to temp
b. inversely proportional to temp
c. directly proportional to pressure
d. inversely proportional to pressure
e. both a and b - Answer-D. inversely proportional to pressure
typical respiratory epithelium contains all of the following except which one?
cilia, layers, tall and narrow cells, mucus producing cells, goblet cells - Answer-Layers
Which one of the following tracheal cartilages are paired?
Thyroid, Cricoid, Arytenoid, Epiglottal - Answer-Atytenoid
Which of the following is not true of the pleurae?
A. The pleurae are membranes that cover surfaces
b.parietal pleurae covers surfaces surrounding the lungs
c. visceral pleurae cover the diaphragm
d. a health pleural cavity is nearly empty of air or fluid - Answer-c. visceral pleurae
covers the diaphragm
- parietal covers surface around the lungs (ribcage, diaphragm, mediastinum)
- visceral covers the lungs
which of the following is not true of the bronchioles?
with Correct Answers
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 - Answer-a. 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? - 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 alveoli 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 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 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? - Answer-
True
True/False: During inhalation the rib cage lifts in an upward motion to open and expand
the lungs - Answer-True
True/False: as the thoracic cavity expands and the lung volume increase the density of
gases filing the lungs decreases? - Answer-True
Boyles law = high volume in container = lower pressure in container. Pressure and
density have a direct relationship
True/False: when the diaphragm rises, thoracic pressure increases and air naturally
flows out of the lungs. - Answer-Trie (air naturally flows out of the lungs because of the
pressure difference.
Boyles law states that gas volume is:
a. directly proportional to temp
b. inversely proportional to temp
c. directly proportional to pressure
d. inversely proportional to pressure
e. both a and b - Answer-D. inversely proportional to pressure
typical respiratory epithelium contains all of the following except which one?
cilia, layers, tall and narrow cells, mucus producing cells, goblet cells - Answer-Layers
Which one of the following tracheal cartilages are paired?
Thyroid, Cricoid, Arytenoid, Epiglottal - Answer-Atytenoid
Which of the following is not true of the pleurae?
A. The pleurae are membranes that cover surfaces
b.parietal pleurae covers surfaces surrounding the lungs
c. visceral pleurae cover the diaphragm
d. a health pleural cavity is nearly empty of air or fluid - Answer-c. visceral pleurae
covers the diaphragm
- parietal covers surface around the lungs (ribcage, diaphragm, mediastinum)
- visceral covers the lungs
which of the following is not true of the bronchioles?
