During the first year of postnatal life, body length increases about

Research indicates that being exposed to second-hand smoke has very little effect

Indicate whether the statement is true or false.

Shortly after she lay down to go to sleep, Ellen was starting to drift off to a peaceful slumber. Out of nowhere, she experienced a sudden muscular spasm that pulled her right back to wakefulness

The technical name of this muscular contraction is a __________. a. hypnagogic jerk b. REM clench c. sleep spindle d. beta block