Exam 1: Abducens Nerve Flashcards
1
Q
CN 6 supplies
A
Lateral rectus
2
Q
Apparent origin of CN6
A
Medullopontine sulcus
3
Q
Abducens nuclei location
A
Caudal part of pons (Tegmentum) , floor of rhomboid fossa
4
Q
Axons from abducens nuclei travel
A
Anterior
5
Q
Abducens receives input from
A
MLF
BM8
Superior colliculus
6
Q
Abducens nerve penetrates dura and travels along
A
Cavernous sinus
7
Q
Internal strabismus
A
Eyes converge
8
Q
External strabismus
A
Eyes diverge
9
Q
Diplopia
A
Double vision
10
Q
Strabismus
A
Eyes not aligned
11
Q
Diplopia is
A
Subjective
12
Q
Ptosis
A
Drooping eyelid due to weakness of levator palpebra superioris
13
Q
____ lesions may be cause of ptosis
A
Oculomotor Nerve (superior ramus)
14
Q
Ptosis presents
A
Unilaterally
15
Q
Internal ophthalmoplegia
A
Inability to constrict pupil
Loss of light reflex
Loss of accommodation reflex
