Which of the following occurs during rapid eye movement (REM) sleep?
A) A person falls into light sleep.
B) The muscles are paralyzed, and body temperature, blood pressure, and heart rate and respiratory rate increase.
C) The muscles are very relaxed and body temperature, blood pressure, and heart rate, and respiratory rate are at their lowest levels.
D) The muscles relax, and body temperature, blood pressure, heart rate, and respiratory rate fall.
E) A person begins to relax and feels drowsy.
B
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Exposure to secondhand smoke can cause or increase risk of
A. heart disease, lung cancer, and low birth weight. B. high altitude sickness and sleep apnea. C. pneumonia and tuberculosis. D. sarcoidosis, multiple sclerosis, and vasculitis
The ankle joint is the only joint that makes the movements "dorsiflexion" and "plantar flexion"
Indicate whether this statement is true or false.
A child's growth would be stunted by thyroid hormone deficiency.
Answer the following statement true (T) or false (F)
Axon endings contain acetylcholinesterase?
a. true b. false