neuro terms and functions

Question 1

association fiber fxn

Answer 1

interconnects cortical areas within the same hemisphere

Question 2

arcuate fiber fxn

Answer 2

interconnect gyri within a lobe

Question 3

longitudinal fasiculi fxn

Answer 3

interconnect the frontal lobe with other cerebral lobes

Question 4

commisural fiber fxn

Answer 4

interconnect corresponding lobes of different hemispheres

Question 5

projection fiber fxn

Answer 5

connect cerebral cortex to diencephalong, brain stem, cbellum, and spinal cord

Question 6

amygdaloid body fxn

Answer 6

component of limbic sys

Question 7

claustrum fxn

Answer 7

role of subconsious processing of visial info

Question 8

anterior group of thalamus

Answer 8

part of the limbic system

Question 9

medial group of thalamus

Answer 9

integrates sensory info for projection to frontal lobes

Question 10

ventral group of thalamus

Answer 10

projects sensory info to primary sensory cortex, cerebellum, and basal gang.

Question 11

pulvinar portion of thalamus

Answer 11

posterior; integrates sensory info for projection to association areas of cerebral cortex

Question 12

superior colliculi

Answer 12

integrates visual info with other info; can do reflex responses to visual stimuli

Question 13

inferior colliculi

Answer 13

relays auditory info to medial geniculate nucli; can do reflex response to auditory stimuli

Question 14

red nuclei

Answer 14

involuntary control of background muscle tone and limb position

Question 15

substantia nigra

Answer 15

regulates pain activty in basal nuclei

Question 16

reticular formation

Answer 16

automatic processing of incoming sensations and outgoing motor commands; can respond to stimuli; helps maintain consciousness

Question 17

cerebral peduncles

Answer 17

connect primary motor cortex with motor neurons in brain and spinal cord; carries ascending sensory to thalamus

Question 18

nucleus gracilis/cuneatus

Answer 18

relays somatic sensory info to the ventral posterior nuclei of thalamus

Question 19

olivary nuclei

Answer 19

relays info from spinal cord, red nucleus, midbrain centers and cerebral cortex to the vermis of the cerebellum

Question 20

two pathways in posterior column

Answer 20

fasiculus gracilis, cuneatus

Question 21

path of fasciculus gracilis

Answer 21

1) DRG, ascend in fasciculus
2) nucleus gracilis, cross over to other side medial lemniscus and ascend
3) ventral posterolateral nucleus of thalamus to cortex on contralateral side of stimulus

Question 22

path of fasciculus cuneatus

Answer 22

1) DRG, ascend in fasciculus
2) nucleus cuneatus, cross over to other side medial lemniscus and ascend
3) ventral posterolateral nucleus of thalamus to cortex on contralateral side of stimulus

Question 23

two pathways in posterior column carry what info

Answer 23

proprioception, fine touch, pressure, vibration

Question 24

path of lateral spinothalamic tract

Answer 24

1) DRG, to dorsal root
2) posterior gray horn, cross through ventral commisure to lateral spinothalamic tract and ascend
3) ventral posterolateral nucleus of thalamus to primary cortex on contralateral side of stimulus

Question 25

lateral spinothalamic tract carries

Answer 25

pain temperature

Question 26

path of anterior spinothalamic tract

Answer 26

1) DRG, to dorsal root 2) posterior gray horn, cross through ventral commisure to anterior spinothalamic tract and ascend 3) ventral posterolateral nucleus of thalamus to primary cortex on contralateral side of stimulus

Question 27

anterior spinothalamic tract carries. lateral?

Answer 27

crude touch and pressure sensations. lateral spinothalamic carries pain, temperature

Question 28

posterior spinocerebellar tract path

Answer 28

1) DRG, to dorsal root 2) posterior gray horn, enter posterior spinocerebellar tract on same side and go to the cerebellar cortex DO NOT CROSS

Question 29

anterior spinocerebellar tract path

Answer 29

1) DRG to dorsal root 2) posterior gray horn and cross before entering the anterior spinocerebellar tract to go to the cerebellar cortex. THESE CROSS AGAIN within the cerebellum

Question 30

spinocerebellar tracts carry

Answer 30

proprioception of muscles, tendons, and joints

Question 31

corticobulbar tract UMN

Answer 31

primary motor cortex

Question 32

corticobulbar tract destination

Answer 32

LMN of cranial nerve nuclei in brainstem

Question 33

action of corticobulbar tract

Answer 33

conscious motor control of muscles for eye, face, tongue, neck, and superficial back muscles

Question 34

lateral corticospinal destination

Answer 34

LMN of anterior gray horns in spinal cord

Question 35

lateral corticospinal cross over locale

Answer 35

medullary pyramids

Question 36

vestibulospinal tract UMN

Answer 36

vestibular nucleus @ border of pons and medulla

Question 37

vestibulospinal tract destination

Answer 37

LMN in anterior horn of spinal cord

Question 38

vestibulospinal tract cross over

Answer 38

ahahah. trick question. they don't

Question 39

vestibulospinal tract action

Answer 39

subconsious regulation of balance and muscle tone

Question 40

tectospinal UMN locale

Answer 40

tectum (mesencephalon superior and inferior colliculi)

Question 41

tectospinal destination

Answer 41

LMN of anterior gray horns in CERVICAL spinal cord only

Question 42

tectospinal tract cross over

Answer 42

mesencephalon

Question 43

tectospinal tract action

Answer 43

regulate eye, head, neck, upper limb, position in response to visual and auditory stimuli

Question 44

reticulospinal UMN

Answer 44

reticular formation

Question 45

reticulospinal destination

Answer 45

LMNS of anterior gray horns of spinal cord

Question 46

reticulospinal tract cross over

Answer 46

anooother trick question!! they don't

Question 47

reticulospinal tract action

Answer 47

regulates reflex activity

Question 48

vestibulospinal, tectospinal, reticulospinal paths are part of what general pathway

Answer 48

medial motor pathway

Question 49

corticobulbar, lateral/anterior corticospinal paths are part of what general pathway

Answer 49

corticospinal pathway

Question 50

rubrospinal tract is part of what general pathway

Answer 50

lateral motor pathway

Question 51

rubrospinal tract UMN

Answer 51

rednuclei of mesencephalon

Question 52

rubrospinal tract destination

Answer 52

lower motor neurons of anterior gray horns of spinal cord

Question 53

rubrospinal tract cross over locale

Answer 53

mesencephalon

Question 54

rubrospinal tract action

Answer 54

regulation of upper limb muscle tone and movement

Question 55

cells of the primary motor cortex

Answer 55

pyramidal cells

Question 56

medial and lateral motor pathways that can do unconscious, involuntary movements

Answer 56

vestibulospinal, reticulospinal, tectospinal, rubrospinal