Where are intercalated cells found and what do they do?
A. Distal convoluted tubule; secretion of hydrogen or bicarbonate ions
B. Collecting duct; secretion of hydrogen or bicarbonate ions
C. Collecting duct; reabsorption of sodium
D. Nephron loop; reabsorption of sodium
E. Distal convoluted tubules; reabsorption of sodium
Answer: B
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Fill in the blank(s) with the appropriate word(s).
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Fill in the blank with correct word.
In the blood, the carbonic anhydrase reaction yields
A) CO2. B) H2O. C) HCO3-. D) ATP.
Answer the following statements true (T) or false (F)
1. ?-adrenergic receptors are the only receptors found on the heart. 2. Autonomic reflex centers occur in the spinal cord, medulla, and midbrain. 3. Cranial nerves III, VII, and IX supply the entire parasympathetic innervation of the head; however, only the preganglionic fibers lie within these three pairs of cranial nerves. 4. Because parasympathetic fibers never run in spinal nerves, rami communicantes are associated only with the sympathetic division. 5. Rami communicantes are designated white or grey to indicate whether or not the fibers passing through them are myelinated.