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Attempt Time Score LATEST Attempt 1 44 minutes 95 out of 100
Score for this quiz: 95 out of 100
Submitted Dec 22, 2020 at 2:06pm This attempt took 44 minutes.
Question 1
4 / 4 pts
How many lobes does the left human lung have? Your Answer: two lobes: superior ans inferior Two Lobes
Question 2
0 / 3 pts
Air (and not food) pass in which of the following areas: A. Esophagus Correct Answer B. Nasopharynx You Answered C. Oropharynx D. Both A. and C.
Question 3
3 / 3 pts
In the respiratory system, gas exchange occurs in the: A. Bronchi B. Respiratory bronchioles C. Terminal bronchioles D. Pulmonary alveoli Correct! E. B &D Question 4
10 / 10 pts
Label the following five items from the diagram:
Question 5
5 / 5 pts
Note: Essay answers must clearly be in your own words. Explain what happens to the soft palate during swallowing. Why? Your Answer: Larynx rises, the epiglottis closes the trachea. soft palate moves to prevent food going into the nasal path. to avoid choking while eating The upward movement of the soft palate prevents food or liquid from entering the nasal passages during swallowing. 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: 95% of alveolar epithelium cells makes up type I. They have simple squamous epithelium that are thin type II is 5 % of alveolar cells, divides to replace damaged type I 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
2 / 2 pts
Typical respiratory epithelium contains all of the following, except which one? cilia Correct! layers tall, narrow cells mucus producing cells goblet cells 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
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:
-Smoking is often the cause of this disease. A. Emphysema -With this disease, mucus clogs the respiratory tract. B. Pleurisy -This condition results in fluid-filled alveoli. C. Pulmonary edema -This is inflammation of the pleurae. D. Cystic Fibrosis Correct! Smoking is often the cause of this disease. Correct! With this disease, mucus clogs the respiratory tract. Correct! This condition results in fluid-filled alveoli. Correct! This is inflammation of the pleurae. 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. Your Answer: 1 atm= 760 mm Hg A. Emphysema D. Cystic Fibrosis C. Pulmonary edema B. Pleurisy
Bronchioles, primary bronchi, secondary bronchi, tertiary bronchi Tertiary bronchi, secondary bronchi, primary bronchi, bronchioles Secondary bronchi, tertiary bronchi, primary bronchi, bronchioles Question 27
3 / 3 pts
In gas exchange (external respiration): Carbon dioxide diffuses from alveoli into capillaries, oxygen diffuses from capillaries into alveoli Oxygen and carbon dioxide is carried from alveoli into the bronchioles Correct! Oxygen diffuses from alveoli into capillaries, carbon dioxide diffuses from capillaries into alveoli Oxygen is chemically transformed into carbon dioxide within the alveoli Question 28
3 / 3 pts
The purpose of these cells are the primary immune defense of the alveoli: Type I alveolar cells
Type II alveolar cells Surfactant Correct! Alveolar macrophages Question 29
10 / 10 pts
Answer the following essay question (10 points):
- Muscular dystrophy is a neuromuscular disease which restricts the lungs from fully expanding due to muscular weakness. If a person is diagnosed with muscular dystrophy:
- Which of the following statements regarding pulmonary function would be true?
- Explain your answer. A. Inspiratory capacity would be abnormally low B. Vital capacity would abnormally high C. Total lung capacity would remain the same Your Answer: A Inspiratory capicity would be abnormally low. Thie disease can restrict the lungs from full expansion due to muscular weakness. The patient would not have the ability to breath the normal amount of air needed into their lungs at all times. A. Inspiratory capacity would be abnormally low Vital capacity would decrease because there is a decreased ability to bring in as much air compared to normal values because of muscular weakness. Inspiratory Capacity (IC) = TV+IRV (or) VC-ERV Decreased VC, decreased IC Quiz Score: 95 out of 100
