In mammals, oxytocin is released during _____
a. sexual intercoursek only
b. lactation only
c. labor only
d. sexual intercourse, lactation, and labor
e. sexual intercourse and labor
ANSWER: d
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A sample of muscle tissue shows large-diameter fibers that are white in color. Which of the following characteristics would also be associated with this tissue?
A. high rates of ATP hydrolysis B. greater resistance to fatigue C. aerobic respiration D. abundant mitochondria E. All of the answer options are correct.
Which letter in the above figure represents breast
cancer? a. A b. B c. both A and B d. neither A or B e. this is prostate tissue
When the death of species is less eminent, but the population of a particular species is quite small, it is
defined as being:a. extinct. b. extant. c. endangered. d. threatened. e. endemic.
A muscle fiber generates maximum contractile force when
A) it has been stretched excessively. B) it receives repeated action potentials from a motor neuron. C) it has been exposed to creatine phosphate. D) some of the myofibrils contract and then relax at the same time.