What female structure does not originate from the paramesonephric ducts?
A. Uterine tubes
B. Uterus
C. Lower vagina
D. Upper vagina
E. Fallopian tubes
Answer: C
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Which part of a thymic lobule contains mature lymphocytes?
A. Cortex B. Medulla C. Capsule D. Trabecula
When water is lost, but electrolytes are retained,
A) the osmolarity of the extracellular fluid falls. B) osmosis moves water from the intracellular fluid to the extracellular fluid. C) both the extracellular fluid and the intracellular fluid become more dilute. D) there is an increase in the volume of the intracellular fluid. E) None of the answers is correct.
What type of muscle is found in the wall of the heart?
A. skeletal muscle B. cardiac muscle C. smooth muscle
If a person is injected with a toxin that blocks acetylcholine receptors, which of the following will occur?
A. The toxin will have no effect on muscle action. B. The sarcolemma will be constantly stimulated, and muscles will continually contract. C. Spastic paralysis will result. D. Stimulation of the sarcolemma will not be possible, and muscles will be paralyzed. E. The person will develop myasthenia gravis.