Which of the following does not occur during expiration when a person is breathing quietly?
a. The size of the thoracic cavity is reduced.
b. The intra-alveolar pressure becomes greater than atmospheric pressure.
c. Air flows out of the lungs.
d. The expiratory muscles contract.
e. Intrapleural pressure remains less than intra-alveolar pressure.
D
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The process of fibrinolysis
A) activates fibrinogen. B) draws torn edges of damaged tissue closer together. C) dissolves clots. D) forms emboli. E) forms thrombi.
Beaker 1 contains water at 23 degrees C. Beaker 2 contains water at 5 degrees C. Beaker 3 contains water at 95 degrees C. A drop of the same blue dye was placed in each beaker. After 10 minutes, the dye in beaker 1 moved 10 mm from the origin, whereas
the dye in beakers 2 and 3 moved 2 mm and 40 mm from the origin, respectively. Which of the following statements properly explains this observation? A) The rate of diffusion does not change as temperature changes. B) The rate of diffusion increases as temperature decreases. C) The rate of diffusion decreases as temperature increases. D) The rate of diffusion increases as temperature increases.
Improper use of crutches could cause compression of the _____ nerve
A. axillary B. radial C. musculocutaneous D. ulnar E. median
When someone taps you on your shoulder, they stimulate the ____ nerve
A. axillary B. brachial C. radial D. musculocutaneous E. ulnar