What is the diaphragm?
A) A group of special cells located in the medulla that adjusts the rate and depth of breathing as necessary
B) A strong, dome-shaped muscle that separates the chest cavity from the abdominal cavity and plays an important role in ventilation
C) A "C"-shaped ring of cartilage that helps to support the trachea and keep it open
D) A membrane that prevents foreign substances from entering the delicate lungs
Correct Answer:
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Q21: What is muscle atrophy?
A) The loss of
Q22: An elderly person may feel chilly in
Q23: What lines the airway?
A) Mucous membrane
B) Cartilage
C)
Q24: Which part of the upper airway is
Q25: Which characteristic is an indication of healthy
Q27: What role do chemoreceptors play in the
Q28: Which factor reduces the respiratory system's ability
Q29: Why are older adults at increased risk
Q30: Phagocytosis is the:
A) process in the center
Q31: The walls of the arteries contain more
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