GROSS ANATOMY
CRANIAL NERVES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a person falls into a deep sleep.
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the muscles relax, and body temperature, blood pressure, and heart and respiratory rates start to fall.
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a person begins to relax and feels drowsy
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the muscles are very relaxed and body temperature, blood pressure, and heart and respiratory rates are at their lowest levels.
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The muscles are paralyzed, and body temperature, blood pressure, and heart and respiratory rates increase.
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Detailed explanation-1: -During rapid eye movement sleep, a person’s brain activity, breathing, heart rate, and blood pressure increase, and the eyes move rapidly while closed. The muscles in the arms and legs become temporarily unable to move. Rapid eye movement sleep is thought to play an important role in memory and learning.
Detailed explanation-2: -During REM, the brain is very active, and dreams are at their most intense. But the voluntary muscles of the body-arms, legs, fingers, anything that is under conscious control-are paralyzed. Exactly how the muscles are paralyzed has been a mystery, however.
Detailed explanation-3: -With REM sleep, changes occur in brain signaling which cause reduced muscle tone in many of the body’s muscles; this may be called REM sleep muscle paralysis or muscle atonia. This is considered a normal function of REM sleep.
Detailed explanation-4: -Sleep paralysis happens when parts of rapid eye movement (REM) sleep occur while you’re awake. REM is a stage of sleep when the brain is very active and dreams often occur.