"Somatosensory" does not refer to sensory signals from ________.
A. joints
B. the skin
C. the viscera
D. bones and muscles
E. proprioceptors
Answer: C
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What would be the effect of a genetic defect in a clotting factor that normally is part of the conversion of fibrinogen into fibrin?
A. Platelets would not be able to release serotonin. B. Platelet-derived growth factor would be lacking and smooth muscle in the walls of broken blood vessels would not be repaired. C. A clot that seals the break in a blood vessel would not form. D. Plasmin would not be produced and the clot would remain on the wall of the blood vessel without dissolving. E. Platelets would not adhere to one another to form the platelet plug.
A serous membrane consists of a
A) layer of simple squamous epithelium and a thin layer of areolar tissue. B) layer of simple squamous epithelium and a thick layer of dense connective tissue. C) layer of simple squamous epithelium and a thick layer of cartilage. D) layer of pseudostratified epithelium and a thick layer of areolar tissue.
Absorption of O2 from blood and release of CO2 from tissue cells is known as
A) external respiration. B) internal respiration. C) pulmonary ventilation. D) gas diffusion. E) alveolar ventilation.
Following strenuous exercise, blood levels of lactic acid are ________ compared to pre-exercise levels. This change in acid concentration causes a reflex ________ in ventilation by activating ________
A. decreased; decrease; peripheral chemoreceptors B. decreased; decrease; central chemoreceptors C. increased; increase; baroreceptors in the aortic arch D. increased; increase; central chemoreceptors E. increased; increase; peripheral chemoreceptors