Which statement best describes how the skin works with the nervous system?
A. Neurons stimulate melanocytes to change the pigment of the skin.
B. Neurons detect sensations and control glands and arrector pili.
C. Neurons detect the presence of bacteria and viruses.
D. Neurons control clot formation and inflammation.
Answer: B
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The surge in LH that occurs during the middle of the ovarian cycle triggers ___________.
A) follicle maturation. B) ovulation. C) menstruation. D) menopause. E) atresia.
Which of the following proteins attaches Z disks to myosin myofilaments?
A) nebulin B) titin C) actin D) both A and C
The brachial region is commonly known as the ________.
A. upper arm B. buttock C. navel D. breastbone E. groin
According to the sliding-filament mechanism of muscle contraction, the
a. A bands slide in closer between the I bands. b. thin filaments slide inward toward the center of the A band. c. Z lines slide in between the T tubules. d. contractile proteins contract, thus shortening the sarcomere. e. filaments slide into the lateral sacs of the sarcoplasmic reticulum.