Skeletal muscle is highly thermogenic; that is, is produces heat. How?
A. Skeletal muscle contracts around sweat glands, producing heat.
B. It breaks down ATP when it contracts; this produces heat.
C. The friction produced when actin and myosin slide past each other produces heat.
D. When myofilaments shorten, they release heat.
Answer: B
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__________ is the major hormone secreted by the pineal gland and is involved with circadian and seasonal cycles
Fill in the blank with the correct word.
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