Muscle contraction occurs when the myosin cross bridges row along the length of the ______ filaments
a. myosin
b. actin
c. intrafusal
d. extrafusal
e. myofibril
Answer: b. actin
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When you are under stress, the brain's ________ sends messages to the endocrine glands along two major pathways
a. amygdala b. hippocampus c. hypothalamus d. corpus callosum
Sandra and Jim have been happily married for several years. Sandra reports that she reaches orgasm from intercourse only about half the time and wonders if something is "wrong" with her. Sandra should
A. seek treatment for inhibited orgasm disorder. B. have a medical exam. C. realize that her inhibited orgasm problem means that she doesn't really love Jim. D. realize that this is not unusual for women and can work on achieving orgasm with her partner, Jim.
Lives in Context Video 5.1: Obesity Becomes a DiseaseClick on the above link to access the Interactive eBook. Once you've signed in, scroll to page 182 and watch the video. When you've finished watching the video, come back to the test and answer the following question:According to research presented in your textbook, which is supported by expert commentary in the video, obesity presents a significant risk factor for various medical and mental health problems. Therefore, what is one of the best strategies for reducing obesity and, subsequently, obesity-related health problems?
A. including weight-loss surgery as a preventive health procedure, with insurance paying all but the deductible B. encouraging pediatricians to put babies over age 1 on low-calorie, high-protein diets C. maintaining a healthy weight through diet and exercise throughout the life span D. eliminating "weight-loss products" and, instead, prescribing valid weight-loss prescriptions to overweight individuals, starting in adolescence
When the "gates" to the ion channels open, they allow sodium ions to rush into the axon at which location FIRST?
a. within the receptor sites of the dendrites b. near the axon terminals c. near the soma d. within the synaptic cleft