Question 1
4 / 4 pts
How many lobes does the right human lung have?
Your Answer:
Three lobes.
Three Lobes
Question 2
3 / 3 pts
Air and food pass
... [Show More] in which one of the following areas:
Trachea
Nasopharynx
Correct!
Oropharynx
Alveoli
Question 3
3 / 3 pts
Rings of cartilage line much of the respiratory tract. In which of one the following would
cartilage NOT be found?
Trachea
Larynx
Bronchi
Correct!
Alveoli
Question 4
10 / 10 pts
Label the following five items from the diagram:
Label B- ___________
Label D- __________
Label E- __________
Label F- __________
Label G- __________
Your Answer:
Label B- Oral Cavity
Label D - Epiglottis
Label E- Glottis
Label F- Trachea
Label G- Esophagus
Label B- Oral Cavity
Label D- Epiglottis
Label E- Glottis
Label F- Trachea
Label G- Esophagus
Question 5
5 / 5 pts
Note: Essay answers must clearly be in your own words.
Explain what happens to the epiglottis during swallowing. Why?
Your Answer:
When we swallow the epiglottis moves to block the entrance of food particles into our
larynx and lungs. The muscles of the larynx pull upward to assist with this movement.
They tightly close during swallowing. This prevents food from entering our lungs.
The trachea is closed by the epiglottis. The epiglottis moves inferiorly, covering
the trachea. This is to prevent food or liquid from entering the lungs.
Question 6
5 / 5 pts
Note: Essay answers must clearly be in your own words.
Explain at least two differences between Type I and Type II alveolar cells.
Your Answer:
The type I cells is a complex branched cell with multiple cytoplasmic plates that are
greatly attenuated and realatively devoid of organelles. Type I cells the very thin simple
squamous epithelium of the alveoli junction with capillaries. Make up roughly 95 % of
aleveolar epithelial cells.
The Type II cells act as the 'caretaker' of the alveolar compartment. Type II produce and
secrete pulmonary surfactant which is needed throughout the alveolar surface to keep
the alveoli open. In addion, Type II cells can divide to replace damaged Type I cells.
Make up roughly 5% of alveolar epithelial cells.
a. Type I form the very thin simple squamous epithelium of the alveoli in junction
with capillaries. Make up roughly 95% of alveolar epithelial cells.
b. Type II produce and secrete pulmonary surfactant which is needed throughout
the alveolar surface to keep the alveoli open. In addition, Type II cells can divide
to replace damaged Type I cells. Make up roughly 5% of alveolar epithelial cells.
Question 7
2 / 2 pts
True/False: Positive pressure is used to move air into the lungs.
True
Correct!
False
(Negative pressure)
Question 8
2 / 2 pts
True/False: During inhalation the diaphragm contracts to pull the lungs open.
Correct!
True
False
Question 9
2 / 2 pts
True/False: During inhalation the rib cage lifts in an upward motion to open and expand
the lungs.
Correct!
True
False
Question 10
2 / 2 pts
True/False: As the thoracic cavity expands and lung volume increases, the density of
the gases filling the lungs decreases.
Correct!
True
False
Question 11
2 / 2 pts
True/False: When the diaphragm rises, thoracic pressure increases and air naturally
flows out of the lungs.
Correct!
True
(air naturally flows out of the lungs because of the pressure difference)
False
Question 12
2 / 2 pts
Boyle's law states that gas volume is:
A. Directly proportional to temperature
B. Inversely proportional to temperature
C. Directly proportional to pressure
Correct!
D. Inversely proportional to pressure
E. Both A and B
Question 13
2 / 2 pts
Which one of the following tracheal cartilages are paired?
Thyroid
Cricoid
Correct!
Arytenoid
Epiglottal
Hyaline
Question 14
2 / 2 pts
Which one of the following is not true of the pleurae?
The pleurae are membranes that cover surfaces
Parietal pleurae cover the surfaces surrounding the lungs
Correct!
Visceral pleurae cover the diaphragm
A healthy pleural cavity is nearly empty of air or fluid
Question 15
2 / 2 pts
Which one of the following is not true of the respiratory physiology?
Correct!
Tidal volume is the maximum amount of air able to be inhaled beyond normal inhalation
Tidal volume is the amount of air inhaled and exhaled in one cycle of quiet breathing
Inspiratory reserve volume is the maximum amount of air able to be inhaled beyond
normal inhalation
Expiratory reserve volume is the maximum amount of air able to be exhaled beyond
normal exhalation
Question 16
2 / 2 pts
Which one of the following is true of the respiratory physiology calculations?
(You may find it helpful to draw the respiratory physiology diagram on a piece of scratch
paper.)
Vital Capacity (VC) = ERV+TV
Correct!
Total Lung Capacity (TLC) = VC +RV
Inspiratory Capacity (IC) = TV+RV
Functional Residual Capacity (FRC) = IRV + TV
Question 17
2 / 2 pts
True/False:
The gas-exchange region in the lungs must be dry, thin and large.
True
Correct!
False
requires moisture
Question 18
2 / 2 pts
True/False:
The vestibule is the most external portion of the nasal cavity.
Correct!
True
False
Question 19
2 / 2 pts
True/False:
The vestibule is lined with typical respiratory epithelium.
True
Correct!
False
stratified squamous epithelium is found in the vestibule
Question 20
0 / 2 pts
True/False:
Because of diffusion, oxygen naturally moves out of the blood and into the lungs.
You Answered
True
Correct Answer
False
Question 21
2 / 2 pts
True/False:
The bronchioles are surrounded by capillaries for gas exchange.
True
Correct!
False
Question 22
10 / 10 pts
Matching:
The pleural space fills with air, pus or blood. A. Emphysema
This condition results from fluid-filled alveoli. B. Cystic Fibrosis
This condition results in a loss of alveoli. C. Pulmonary edema
This hereditary illness results in excess mucus. D. Pleurisy
Correct!
The pleural space fills with air, pus or blood.
Correct!
This condition results from fluid-filled alveoli.
Correct!
This condition results in a loss of alveoli.
Correct!
This hereditary illness results in excess mucus.
Question 23
4 / 4 pts
The pressure of three gases equals 1 atmosphere. What is the partial pressure of
oxygen (in mmHG) if nitrogen is 300 mmHg and carbon dioxide is 350 mmHg? To
receive full credit you must show your work.
D. Pleurisy
C. Pulmonary edema
A. Emphysema
B. Cystic Fibrosis
Your Answer:
1 atm = 760 mmHg
300 mmHg+350 mmHg + X = 760 mmHg
X = 110 mmHg
110 mmHG
1atm= 760 mmHg
300 mmHg + 350 mmHG + X = 760 mmHg
OR: 760 - 300-350= 110 mmHG
Question 24
3 / 3 pts
Why would warming air be beneficial to gas exchange?
Your Answer:
The higher temperature the greater gas volume, or the lower temperature the lower gas
volume. That's mean is Charles's Law. According to Charles's Law, the volume of a
given quantity of gas is directly proportional to its temperature. Therefore the weather
when be warm, gas volume greater. Warm air helps keep our lungs expanded in alveoli
full and open and gas exchange can take place.
It would expand the air to make it more available for gas exchange [Show Less]