Each of the following factors affects the efficiency of pulmonary gas exchange EXCEPT:
A) diameter of an alveolus.
B) surface area of the respiratory membrane.
C) thickness of the respiratory membrane.
D) partial pressure of carbon dioxide (PCO2 ) in the blood of the pulmonary capillaries.
Answer: A
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Baroreceptors are located in the
A) carotid sinuses. B) aortic sinuses. C) right atrial wall. D) carotid and aortic sinuses. E) carotid and aortic sinuses and the right atrial wall.
The peripheral chemoreceptors are located in the ____________________ and ____________________ bodies
Fill in the blank(s) with correct word
The mastication center is located in the ________ of the brain.
A. medulla and pons B. solitary nucleus C. entorhinal cortex and basal nuclei D. hypothalamus E. hippocampus and amygdala
Which muscle elevates the scapula?
A) Latissimus dorsi B) Teres minor C) Rhomboid major D) Infraspinatus