Which describes cryptorchidism?
A. Hidden tumor in the prostate gland
B. Impotence
C. Infertility
D. Twisting of the spermatic cord
E. Failure of the testes to descend from the abdomen
Answer: E
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The condition known as osteopenia
A) affects mostly women. B) causes a gradual reduction in bone mass. C) is caused by too much vitamin D in the diet. D) is rarely seen as people age. E) only affects the femur.
How does the structure of a lymph node allow lymphocytes and macrophages to perform their protective function?
What will be an ideal response?
If blood has low viscosity, which result would be likely under normal conditions?
A) Blood flows at higher pressures. B) Blood flows against high resistance. C) Blood flow cannot occur. D) Blood flows at lower pressures. E) Blood contains increased numbers of plasma proteins and suspended blood cells.
The Na+-K+ pump
a. pumps Na+ into the cell. b. pumps K+ into the cell. c. pumps K+ out of the cell. d. has a higher affinity for K+ when the carrier is phosphorylated. e. more than one of these answers.