Point 21


Intro

Pathway

Deficit

Clinical

Overview

Problems


Contents

Anatomy

PROBLEM SOLVING #1
Which statement is TRUE regarding the shaded areas below? All parts of the response must be correct.

A

cells project to the left dilator pupillae muscle

B

pathway terminates on cells in the left nucleus ambiguus, some axons in the pathway terminate on cells in the right lumbar spinal cord, and pathway terminates on cells in the ventral portion of the left motor VII

C

pathway terminates on cells in the left motor V, pathway terminates on cells in the dorsal portion of the right motor VII, pathway terminates on cells in the lower portion of the left motor VII, pathway terminates on cells in the cervical cord on the right side of the spinal cord, and pathway terminates on cells in the right nucleus ambiguus

D

pathway arises from cells in the inferior colliculus, and pathway arises from cells in the left motor cortex

E

cells project to the left ciliary ganglion, cells project to the left superior rectus, and a major descending pathway is damaged upon left uncal herniation

 

PROBLEM SOLVING #2
Which statement below is TRUE regarding the neurological deficit(s) that would be present following a lesion of the shaded areas below? There may be deficits that are not included in the responses. All parts of the response must be correct.

A

left eye deviated up and in

B

subtle auditory deficits, and deviation of the uvula to the right upon elevation of the soft palate

C

a dilated pupil in the left eye, right hemiplegia, and deviation of the tongue to the right upon protrusion

D

deviation of the tongue to the right upon protrusion and deviation of the jaw to the left upon jaw opening

E

ptosis of left eyelid, and weakness of the muscles below the eye on the left side of the face

 

PROBLEM SOLVING #3
Which statement is TRUE regarding the shaded area below? All parts of a statement must be true for the choice to be correct.

A

axons arise from cells in the left Edinger-Westphal nucleus

B

lesion results in ptosis of the right eyelid, and lesion results in a dilated pupil in the left eye

C

axons terminate directly on the constrictor pupillae muscle of the right eye, and lesion results in double vision (if right eyelid manually elevated)

D

axons terminate in the inferior rectus muscle of the right eye

E

axons terminate in the right superior oblique muscle