The white of the eye is called the ________. A) retina B) ...

[Diane]

The white of the eye is called the ________.
 
  A) retina
  B) iris
  C) sclera
  D) optic disk

Question 2

A decreased level of which neurotransmitter may cause schizophrenia and depression?
 
  A) dopamine
  B) epinephrine
  C) norepinephrine
  D) serotonin

[cici]

Answer to Question 1

C
Explanation: A) The retina is at the back of the eye, not the anterior white of the eye.
B) The iris is a colored ring, not the white of the eye.
C) Correct
D) The optic disk is a yellow-white disk, but not the white of the eye.

Answer to Question 2

A
Explanation: A) Correct
B) Epinephrine is not associated with schizophrenia and depression.
C) This is not true of norepinephrine.
D) This is not true of serotonin.