Which of the following would lead to relaxation of the precapillary sphincter?
A. decreased tissue metabolism
B. decreased oxygen levels in tissue cells served by the capillary
C. decreased carbon dioxide concentration in the capillary bed
D. decreased lactic acid production by cells in the capillary bed
E. decreased nitric acid levels
B
You might also like to view...
Aldosterone exerts effects on principal cells of the kidney by causing
A. increased levels of cAMP and increases in the total number of Na+ channels. B. decreased levels of cAMP and decreases in the number of open K+ channels. C. increased numbers of Na+/K+ pumps. D. decreased numbers of Na+/K+ pumps.
A labradoodle is a example of a __________ breed
Fill in the blank(s) with correct word
How does a rightward shift in the oxygen hemoglobin dissociation curve affect hemoglobin's affinity to oxygen?
A. Increase B. No change C. Decrease
If the adrenal glands were removed from a patient, his plasma cortisol levels would ________, secretion of CRH by the ________ would ________, and secretion of ACTH by the ________ would ________.
A. decrease; adenohypophysis; increase; anterior pituitary gland; increase B. decrease; hypothalamus; increase; adenohypophysis; increase C. decrease; anterior pituitary gland; increase; hypothalamus; increase D. increase; hypothalamus; decrease; anterior pituitary gland; decrease E. increase; hypothalamus; increase; adenohypophysis; increase