Which of the following cells secretes surfactant?
A. alveolar macrophages
B. type I alveolar cells
C. type II alveolar cells
D. goblet cells
Answer: C. type II alveolar cells
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These receptors respond to pain caused by external and internal stimuli.
A. Mechanoreceptors B. Photoreceptors C. Nociceptors D. Chemoreceptors E. Thermoreceptors
Which of the following is a function of astrocytes?
A. They circulate the cerebrospinal fluid. B. They produce cerebrospinal fluid. C. They phagocytize tissue debris. D. They help form the blood-brain barrier. E. They form myelin in the CNS.
Heat-loss mechanisms do not include ________.
A) reducing activity B) the evaporation of sweat C) behavior measures such as wearing light, loose clothing D) vasoconstriction of peripheral blood vessels
The visceral pericardium is most closely associated with which of the following?
A) Epicardium B) Parietal pericardium C) Fibrous pericardium D) Endocardium