Stretching of tissues can cause pain sensations to arise from visceral organs.
Answer the following statement true (T) or false (F)
True
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One way that cells can increase their responsiveness to an external chemical regulator is by
A. increasing the number of their transmembrane receptors by endocytosis. B. increasing the number of their transmembrane receptors by exocytosis. C. uncoupling their receptors from the second message generator. D. mutating their extracellular receptors so that the affinity for the chemical regulator is reduced. E. decreasing the number of their transmembrane receptors by endocytosis.
Gastric chief cells secrete pepsin.
Answer the following statement true (T) or false (F)
In response to respiratory alkalosis,
A) the respiratory rate increases. B) the chemoreceptors in the carotid and aortic bodies are further stimulated. C) the kidneys conserve bicarbonate. D) the kidneys secrete more hydrogen ions. E) the respiratory rate decreases.
You may have noticed that after a large meal you have had some difficulty breathing. Which explanation is most accurate with regard to this situation?
A. The large quantity of food retards pulmonary blood flow. B. A full stomach impedes contraction of the diaphragm, limiting inhalation. C. The food presses on the bronchi, making air flow difficult. D. Oxygen to the lungs is restricted due to fullness in the stomach.