The neurotransmitter released by all somatic motor nerves is
a. epinephrine.
b. acetylcholine.
c. norepinephrine.
d. acetylcholinesterase.
ANS: B
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Signs and symptoms of infection in older persons do NOT include:
A. pain or burning on urination. B. mental confusion or disorientation. C. changes in skin color. D. changes in hair texture.
Which of the following statements about chemoreceptors in the human body is true?
A) The central chemoreceptors are located in the lungs and provide the primary stimulus to breathe. B) The peripheral chemoreceptors are extremely sensitive to oxygen and are located in the brain. C) The central chemoreceptors constantly monitor the oxygen levels in the body and increase the rate when more O2 is needed. D) The peripheral chemoreceptors are more sensitive to oxygen than carbon dioxide.
Which of the following statements is TRUE regarding paradoxical chest movement?
a. With inspiration, the flail section moves outward. b. The trachea deviates away from the flail side of the chest. c. During inspiration, the flail section moves inward. d. During exhalation, the flail area moves inward.
Which of the following is NOT necessary during spirometer testing?
A. Head and chin should be elevated. B. Dentures should be removed. C. Clothing should be tight. D. Feet should be flat on the floor.