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.
The entire space between the pleural cavities containing only the heart, great vessels, thymus, trachea and esophagus is called the
A) pericardial cavity. B) mediastinum. C) thoracic cavity. D) anterior cavity. E) abdominopelvic cavity.
Match the layer of the GI tract wall with its correct characteristics.
A) Contains the nerve plexus that regulates secretions B) Contains cells that secrete hormones C) Contains invaginations to increase surface area D) Layer of the wall that is in contact with food bolus E) Contains the circular and longitudinal smooth muscles F) Outermost layer of the GI wall G) Contains the nerve plexus that regulates motility 1. Mucosa 2. Submucosa 3. Muscularis externa 4. Serosa
What is the total body water (TBW) content of a 70 kg young male?
A. 20 L B. 60 L C. 10 L D. 70 L E. 40 L