Bio 205: Spinal Cord And Nerve Plexuses

Front 1

spinal cord extends down to which vertebra?

Back 1

about L1

Front 2

the tapering terminal portion of of the spinal cord

Back 2

conus medullaris

Front 3

the fibrous strand from the end of the conus medullaris to the coccyx

Back 3

filum terminale

Front 4

how many pairs of spinal nerves?

Back 4

31

Front 5

spinal cord stops growing at how old?

Back 5

4 years, then only vertebral column grows

Front 6

the lower nerve roots that pass through the vertebral canal

Back 6

cauda equina

Front 7

the thick layer of dense connective tissue around spinal cord and brain. most outer layer

Back 7

dura mater

Front 8

the loose connective tissue and adipose tissue surrounding spinal cord

Back 8

epidural space

Front 9

subarachnoid space with cerebrospinal fluid separates this from pia mater

Back 9

arachnoid mater

Front 10

thin layer that's firmly bound to underlying neural tissue. innermost layer

Back 10

pia mater

Front 11

posterior horn of gray matter is responsible for?

Back 11

sensory functions

Front 12

anterior horn of gray matter is responsible for what?

Back 12

motor functions

Front 13

region of skin supplied by specific spinal nerve

Back 13

dermatome

Front 14

spinal tract that conducts information regarding awareness of (fine)touch, pressure, and position

Back 14

dorsal column

Front 15

does dorsal column carry info to opposite side of body?

Back 15

no, it is ipsilateral

Front 16

list path of neurons for dorsal column

Back 16

1st - skin to medulla
2nd - medulla crosses to thalamus
3rd - thalamus to postcentral gyrus

Front 17

tract responsible for awareness of pain and temp

Back 17

lateral spinothalamic

Front 18

which two tracts are contralateral?

Back 18

lateral and anterior spinothalamic tracts

Front 19

list series of neurons for lateral spinothalamic tract

Back 19

1st - periphery to dorsal horn(ventral ramus)
2nd - crosses at dorsal horn, ascends to thalamus
3rd - thalamus to postcentral gyrus
(anterior spinothalamic tract is the same)

Front 20

tract responsible for unconscious information regarding position

Back 20

spinocerebellar

Front 21

where is lateral corticospinal tract located?

Back 21

lateral column

Front 22

list path of upper motor neurons

Back 22

precentral gyrus through cerebral hemisphere, down brain stem, crosses in medulla, passes down spinal cord in lateral corticospinal tract to anterior horn.

Front 23

list path of lower motor neurons

Back 23

anterior horn to muscle

Front 24

fine movements are performed by

Back 24

lateral corticospinal tract

Front 25

more diffuse movements are performed by

Back 25

extrapyramidal tracts

Front 26

break in neck needs to be at what level to prevent any control of breathing?

Back 26

C3

Front 27

motor func of axillary nerve

Back 27

deltoid

Front 28

sensory func of axillary nerve

Back 28

skin of shoulder

Front 29

motor func of radial nerve

Back 29

posterior muscles of arm and forearm

Front 30

sensory func of radial nerve

Back 30

skin of back of arm, forearm, and hand

Front 31

motor func of musculocutaneous nerve

Back 31

biceps brachii and brachialis

Front 32

sensory func of musculocutaneous

Back 32

lateral surface of forearm

Front 33

motor function of median nerve

Back 33

muscles of anteror lateral forearm and hand

Front 34

sensory func of median nerve

Back 34

skin of anterior lateral hand

Front 35

motor func of ulnar nerve

Back 35

muscles of anterior medial forearm and hand

Front 36

sensory func of ulnar nerve

Back 36

skin of anterior medial hand

Front 37

motor func of femoral nerve

Back 37

anterior thigh muscles

Front 38

sensory func of femoral nerve

Back 38

skin of anterior medial thigh, leg, and foot

Front 39

motor func of obturator nerve

Back 39

adductor muscles of thigh

Front 40

sensory func of obturator nerve

Back 40

skin of medial thigh

Front 41

motor func of sciatic nerve

Back 41

posterior thigh muscles(hamstrings)

Front 42

motor func of tibial nerve

Back 42

posterior leg and foot muscles

Front 43

sensory func of tibial nerve

Back 43

skin of posterior leg and sole

Front 44

M func of common peroneal nerve

Back 44

anterior lateral muscles of leg and foot(peroneus, tibialis anterior, extensor digitorum)

Front 45

S func of common peroneal nerve

Back 45

skin of anterior lateral leg and foot

Front 46

M func of pudendal nerve

Back 46

muscles of perineum

Front 47

S func of pudendal nerve

Back 47

external genitalia