A medical condition in which the myelin sheath is destroyed, resulting in neurologic problems is:
A) multiple sclerosis
B) Parkinson disease
C) postpoliomyelitis
D) muscular dystrophy
Question 2
Which structure is a mucous membrane that lines the outer surface of the eye and the inside of the eyelid?
A) conjunctiva
B) ciliary body
C) choroid
D) crystalline lens