Menstruation is initiated by a rapid
a. increase in estrogen levels
b. drop in estrogen levels
c. drop in progesterone levels
d. increase in estrogen levels and drop in progesterone levels
e. drop in estrogen levels and drop in progesterone levels
E
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Match each of the terms with its definition or explanation.
a. skeletal muscle b. smooth muscle c. origin d. insertion e. actin f. myosin g. motor unit h. neuromuscular junction i. isotonic j. isometric 1. _____ Protein that makes the thin myofilament 2. _____ Another name for voluntary muscle 3. _____ Type of muscle contraction in which the muscle shortens and the joint moves 4. _____ Point of contact between the nerve ending and the muscle fiber 5. _____ Attachment point to the bone that moves during muscle contraction 6. _____ Another name for visceral muscle 7. _____ Protein that makes up the thick myofilament 8. _____ Attachment point to the bone that is stationary during contraction 9. _____ Muscle contraction in which the muscle tenses but does not shorten 10. _____ Single motor neuron with all the muscle cells it innervates
What is manipulated in the craniosacral system during a craniosacral therapeutic session?
a. Dura mater. b. Interstitial fluid. c. Pia mater. d. Cerebrospinal fluid.
A mother who had the measles as a child, has a baby. At the age of 1 month, the baby is exposed to measles but does not get sick. What kind of immunity does the baby have?
A. Natural active B. Artificial active C. Natural passive D. Artificial passive
Which of the following organs is not a part of the excretory system?
A. Lungs B. Liver C. Bones D. Skin