Both the respiratory system and the circulatory system are involved in the process of respiration
Indicate whether the statement is true or false
T
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Which correctly describes the cause of the increase in alveolar ventilation that occurs when a person ascends to high altitude?
A. The decrease in PCO2 of inspired air decreases alveolar PCO2, stimulating the peripheral chemoreceptors. B. The decrease in PCO2 of inspired air decreases alveolar PCO2, stimulating the central chemoreceptors. C. The decrease in PO2 of inspired air decreases alveolar and arterial PO2, stimulating the peripheral chemoreceptors. D. The decrease in total atmospheric pressure causes a greater negative pressure in the intrapleural space, resulting in deeper and more frequent breathing. E. The decrease in the total barometric pressure at high altitude causes hypocapnea, which stimulates peripheral chemoreceptors.
Drugs that increase the actions of norepinephrine and/or serotonin by keeping them in
synapses longer are most likely used to treat A) multiple sclerosis. B) Tay-Sachs disease. C) erectile dysfunction. D) clinical depression.
Muscles known as the pharyngeal constrictors function in
A) mastication. B) moving the tongue. C) swallowing. D) esophageal peristalsis. E) opening the cardiac sphincter.
Which type of connective tissue predominates in the deep portion of the dermis, where it lends strength to the skin?
A. Adipose B. Dense regular C. Dense irregular D. Cartilage E. Areolar