Which would result in the greatest stimulation of aldosterone secretion?
A. increasing plasma K+ concentration and decreasing plasma angiotensin II concentration
B. decreasing plasma K+ concentration and increasing plasma angiotensin II concentration
C. increasing plasma Na+ concentration and increasing plasma volume
D. increasing plasma K+ concentration and increasing plasma angiotensin II concentration
E. decreasing plasma Na+ concentration and decreasing plasma angiontensin II concentration
D
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Of the different sources of genetic variability which one produces the variation in the combinations of alleles on a single chromosome?
A) independent assortment B) crossing over C) random fertilization D) mutation
The fatty tissue surrounding the kidneys is important because it ________
A) produces vitamin D and other chemicals needed by the kidney B) stabilizes the position of the kidneys by holding them in their normal position C) is necessary as a barrier between the adrenal glands and kidneys D) ensures adequate energy for the adrenal glands to operate efficiently
Which injury is caused by repetitive movements that affect the wrist?
a. tennis elbow b. carpal tunnel syndrome c. dorsiflexion d. overextension
Blocking the antigen receptors on the surface of lymphocytes would interfere with
A) phagocytosis of the antigen. B) the ability of the lymphocyte to present the antigen. C) antigen recognition. D) the lymphocyte's ability to produce antibody. E) None of the answers are correct.