A 35-year-old woman comes to a local hospital with abdominal tenderness and acute pain. On examination, her physician observes that an abdominal infection has spread retroperitoneally. Which of the following structures is most likely affected?
(A) Stomach
(B) Transverse colon
(C) Jejunum
(D) Descending colon
(E) Spleen
Answer: (D) Descending colon
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If a tumor secretes high levels of osteoclast-activating factor, which of the following would you expect to occur as a result of this condition?
A) increases in blood levels of calcium B) bone fragility C) decreased bone density D) increased osteoclast activity E) All of the answers are correct.
Of the following muscle types, which has only one nucleus, no sarcomeres, and few gap junctions?
A) skeletal muscle B) multiunit smooth muscle C) cardiac muscle D) visceral smooth muscle
On the surface of the sarcolemma, the membrane potential may depolarize and repolarize rapidly. This change in electrical potential caused by membrane permeability changes for ions is known as a(n)
A) action potential. B) myosin potential. C) energy of dissipation. D) resting membrane potential.
The LH surge causes ________.
A. endometrium build-up B. ovulation C. menses D. All of the choices are correct.