Portage A&P1 Module 2 Exam Latest Update 2024-2025 Actual Exam Questions and 100% Verified Correct Answers Guaranteed A+ Approved by the Professor
Air (and not food) pass in which of the following areas? - CORRECT ANSWER: B.
Nasopharynx
Answer the following essay question:
- 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:
1) Which of the following statements regarding pulmonary function would be true?2) Explain your answer.
- Inspiratory capacity would be abnormally low
- Vital capacity would abnormally high
C. Total lung capacity would remain the same - CORRECT ANSWER: My answer
(correct):
- Inspiratory capacity would be abnormally low because inspiratory capacity is known
as the maximum amount of air that can be inhaled into the lungs beyond normal effort. If an individual has the disease of muscular dystrophy that restricts the lungs from fully expanding due to muscular weakness, this would mean their ability and capacity to inhale normal levels (or even more so anything beyond normal inhalation levels) would be drastically lower.
(Their inspiratory capacity being abnormally low would also deny that their vital capacity would be abnormally high or that their total lung capacity would remain the same).
Tests also correct answer: 1 / 2
- 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-ERVDecreased VC, decreased IC
Boyle's law states that gas volume is: - CORRECT ANSWER: Inversely proportional to pressure
Essay Q: A premature baby is having difficulty producing surfactant. Explain what
problems may occur and why. - CORRECT ANSWER: Breathing difficulty (respiratory
distress) is likely to occur.Surfactant covers the luminal surface and keeps the alveoli from sticking together (or collapsing) during exhalation.
Essay Q: Explain what happens to the soft palate during swallowing. Why? - CORRECT
ANSWER: The upward movement of the soft palate prevents food or liquid from
entering the nasal passages during swallowing.
Explain what helps to maintain constant temperature within the lungs. Why is it
important for effective gas exchange? - CORRECT ANSWER: Incomplete ventilation
helps to maintain a constant temperature within the lungs. The increased temperature allows for greater gas exchange.
From widest to narrowest, the branches of the bronchial tree are: - CORRECT
ANSWER: Primary bronchi, secondary bronchi, tertiary bronchi, bronchioles
How many lobes does the right lung have? - CORRECT ANSWER: 3 (superior, middle,
inferior)
In gas exchange, (external respiration): - CORRECT ANSWER: Oxygen diffuses from alveoli into capillaries, carbon dioxide diffuses from capillaries into alveoli
In the respiratory system, gas exchange occurs in the: - CORRECT ANSWER: E. B&D
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