Brainstem Structures -- Midbrain

Question 1

Functions in the control of reflex movements that orient the eyes, head, and neck in response to visual, auditory, and somatic stimuli

Answer 1

Superior Colliculus

Question 2

Functions in the processing of autonomic and limbic activities as well as modulation of nociception

Answer 2

Periaqueductal gray matter

Question 3

Passage b/w 3rd and 4th ventricle

Answer 3

Aqueduct of Sylvius

Question 4

Parasympathetics of the eye to constrict the iris and to the ciliary muscle to alter lens shape for accommodation

Answer 4

Edinger-Westphal nucleus

Question 5

Control of eye muscles

Answer 5

CN III

Question 6

Fiber pathway to thalamus for pain/temp from periphery

Answer 6

Spinothalamic tract

Question 7

Sensory pathway for proprioception connecting the nucleus gracilis and cuneatus with the thalamus

Answer 7

Medial Lemniscus

Question 8

Thalamic relay nuclei for auditory info

Answer 8

Medial Geniculate Nucleus

Question 9

Thalamic relay nuclei for visual info

Answer 9

Lateral geniculate nuclei

Question 10

Fiber bundles of the corticospinal tract connecting the cerebral cortex to the brainstem

Answer 10

Cerebral peduncle

Question 11

Optic fibers from optic chiasm to the lateral geniculate

Answer 11

Optic tract

Question 12

One of several nuclei involved in smooth motor control; degenerates in Parkinson’s

Answer 12

Substantia nigra

Question 13

Relay nuclei b/w the cerebellum to the thalamus

Answer 13

Red Nucleus

Question 14

Fiber pathway b/w the vestibular nuclei & the CN nuclei III, IV, and VI to coordinate head/eye movements

Answer 14

Medial Longitudinal Fasciculus