According to the Bell-Magendie Law, sensory nerves enter the spinal cord from the:

(1) rostrum
(2) claustrum
(3) dorsum
(4) ventrum

Who discovered the synapse?

(a) Camillo Golgi
(b) Santiago Ramon y Cajal
(c) Rita Levi-Montalcini
(d) Walter Cannon

Autoradiography provides one way of solving the:

(a) anterograde question
(b) retrograde question
(c) chemical anatomy question
(d) structural anatomy question

Describe briefly what happens to dopamine, serotonin, norepinephrine, and acetylcholine neurons during REM sleep (short answer).