Structures--> fxn

Question 1

Superior colliculus

Answer 1

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

Question 2

Periaqueductal gray matter

Answer 2

fxns in the processing of autonomic and limbic activities, as well as modulation of nociception; Midbrain

Question 3

aqueduct

Answer 3

passageway connecting the 3rd and 4th ventricles; Midbrain

Question 4

Nucleus of edinger westphal

Answer 4

parasympathetic innervation of the eye to constrict the iris and to the ciliary muscle to alter lens shape for accommodation; Midbrain

Question 5

CNIII and nucleus

Answer 5

motor control of eye muscles; Midbrain

Question 6

Spinothalamic tract

Answer 6

fiber pathway to thalamus for pain/temp from the periphery; Midbrain

Question 7

Medial lemniscus

Answer 7

sensory pathway for proprioception connecting the nucleus gracilis and cuneatus w/ the thalamus; Midbrain

Question 8

Medial geniculate

Answer 8

thalamic relay nuclei for auditory info; Midbrain

Question 9

Lateral geniculate

Answer 9

thalamic relay nuclei for visual info; Midbrain

Question 10

Cerebral peduncle

Answer 10

fiber bundles of the corticospinal tract connecting the cerebral cortex to the brainstem; Midbrain

Question 11

optic tract

Answer 11

optic fibers from optic chasm to the lateral geniculate; Midbrain

Question 12

substantia nigra

Answer 12

one of several nuclei involved in smooth motor control; degenerates in parkinsons; Midbrain

Question 13

Red nucleus

Answer 13

relay nuclei btw the cerebellum to the thalamus; Midbrain

Question 14

Medial longitudinal fasciculus

Answer 14

fiber pathway btw the vestibular nuclei and the CN nuclei III, IV, VI to coordinate head/eye movement; Midbrain, pons

Question 15

Superior cerebellar peduncle

Answer 15

fiber pathway to and from the cerebellum; Pons

Question 16

Middle cerebellar peduncle

Answer 16

fiber pathway to and from the cerebellum; Pons

Question 17

mesencephalic, main sensory nucleus, & motor nucleus of V

Answer 17

3 nuclear components of the trigeminal nerve nuclei; Pons

Question 18

CN V

Answer 18

motor and sensory fibers to trigeminal region; Pons

Question 19

Ponine nuclei

Answer 19

collection of neurons in the pons that receive input from the neocortex and send crossing fibers through the middle cerebellar peduncle; Pons

Question 20

Locus coeruleus

Answer 20

a noradrenergic brainstem nucleus involved in mood, sleep/wake cycle; Pons

Question 21

Raphe nucleus pontis

Answer 21

one of several serotonin type nuclei involved in mood, sleep/wake cycle ; Pons

Question 22

Corticospinal tract

Answer 22

motor fibers from the neocortex to the spinal interneurons and LMN; Pons

Question 23

Inferior and medial vestibular nuclei

Answer 23

nuclei of the vestibular system that regulate balance; upper medulla

Question 24

nucleus and tractus soliarius

Answer 24

sensory nucleus for taste(from CNVII), glands, chemo/baroreceptors (CN IX, X); upper medulla

Question 25

Dorsal motor nucleus of vagus

Answer 25

parasympathetic motor nucleus to lungs and gut; upper medulla

Question 26

spinal nucleus and tract of CN V

Answer 26

Nuclear and tract components of CN V that extend down into the upper cervical spinal cord ; upper &lower medulla

Question 27

Inferior olivary nucleus

Answer 27

origin of the climbing fibers to the cerebellar purkinje cells; upper medulla

Question 28

Pyramid

Answer 28

name given to the corticospinal tract fibers in medulla; upper medulla

Question 29

Reticular formation

Answer 29

a network of neurons and axons that reside in the brain stem tegmentum involved in arousal, respiration, HR controll; upper medulla

Question 30

Nucleus of CN IX

Answer 30

glossopharyngeal nucleus w/ motor control over tongue and pharyngeal muscles w/ taste from …..; lower medulla