Increased ADH secretion could be stimulated by which of the following situations?
A. increased renal blood flow
B. increased blood osmolality
C. increased atrial natriuretic hormone production
D. increased blood pressure
E. decreased blood osmolality
B
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If the EDV is 140 mL, which other values are most likely to occur in a healthy, normal person?
A) The cardiac output could be 90 mL. B) The ESV could be 70 mL and the SV could be 90 mL. C) The ESV could be 90 mL and the SV could be 50 mL. D) Diastolic pressure would be equal to EDV. E) The ESV could be 50 mL and the SV could be 90 mL.
Which of the following counteracts the movement of bicarbonate ions from the RBCs?
A) the chloride shift B) Dalton's law C) ventilation-perfusion matching D) the Bohr effect
Why are action potentials sometimes described as being "all-or-none" in character?
A. The rate of propagation of an action potential down an axon is independent of stimulus strength. B. They are associated with an absolute refractory period. C. A supra-threshold stimulus is required to stimulate an action potential during the relative refractory period. D. An action potential occurs whenever a suprathreshold stimulus occurs, and its amplitude does not vary with the size of a stimulus, as long as the membrane is not in the refractory period. E. Action potentials are always the same size, even when ion gradients vary in size.
Cellular respiration uses carbon dioxide to produce ATP and oxygen
Indicate whether the statement is true or false