A weight lifter is attempting a new level of weights that are too heavy for him. His muscles contract but can't shorten. This would be an example of what type of contraction?
A. Eccentric contraction
B. Isometric contraction
C. Isotonic contraction
D. Concentric contraction
Answer: B
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Which of the following could be used to study general features of cells?
A. Binoculars B. A magnifying glass C. Scanning electron microscope D. Light microscope E. Transmission electron microscope
Menopause, which ends childbirth ability, is considered to have occurred when a woman ________
A) misses her first period B) misses two periods in a row C) turns 50 D) has gone a year without menstruation E) has had a hysterectomy
The medulla oblongata originates from which structure?
A. Metencephalon B. Diencephalon C. Mesencephalon D. Myelencephalon E. Telencephalon
Which statement best describes the manner in which growth hormone stimulates cell proliferation?
A. It directly stimulates cell division in most tissues. B. It stimulates the release of insulin-like growth factor I (IGF-1) from the liver and other target tissues of growth hormone. C. It stimulates metabolism. D. It stimulates the release of eicosanoids from lymphoid tissues. E. It stimulates sleep.