The multilayered light-sensitive surface in the eye that records electromagnetic energy and converts it to neural impulses for processing in the brain is known as the

____ inhibits the firing of neurons in the central nervous system, but it excites the heart muscle, intestines, and urogenital tract.

Which of the following statements is true of teratogens?

In correlations research, third variables are also called.

Which of the following statements is true of teratogens?

REM sleep is initiated by a rise in _____, which activates the cerebral cortex while the rest of the brain remains relatively inactive.

You tried to play peek-a-boo with your six-month-old nephew, but whenever you hid your face, he would cry. You try it again three months later, and now he laughs and enjoys the game, trying to uncover your face with his hands. Your nephew has begun to develop

All of the following are symptoms of major depressive disorder EXCEPT

Which of the following is true of the neurotransmitter serotonin?

The somatic nervous system consists of motor nerves, whose function is to _____.