The midbrain is comprised of the A) dorsal horn and ventral ...

[javeds]

The midbrain is comprised of the
 
  A) dorsal horn and ventral horn.
  B) tectum and tegmentum.
  C) pons and medulla.
  D) thalamus and hypothalamus.
  E) superior colliculus and inferior colliculus.

Question 2

Which of the following is true of the periaqueductal gray (PAG)??
 
  A) The PAG is located within the tectum.
  B) Over 90 nuclei comprise the PAG..
  C) The term PAG means tiny ventricle.
  D) The PAG is involved in the control of sleep and arousal.
  E) Opiates bind to PAG receptors to diminish pain..

[pami445]

Answer to Question 1

Answer: B
Rationale: The midbrain is comprised of the tectum and tegmentum.

Answer to Question 2

Answer: E
Rationale: Opiates bind to periaqueductal gray receptors to diminish pain.

[javeds]

Gracias!

[Viet Thy]

TYSM