Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Anatomy > Spinal CHord and Nerves > Flashcards

Spinal CHord and Nerves Flashcards

(78 cards)

Start Studying
1
Q

size and location of the spianl cord

A
  • slender nerve column
  • about 45 cm long
  • starts at foramen magnumn and ends at L1 or L2
  • 31 pairs of spinal nerves
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

overall structure info

A
  • bilateral structure
  • consists of gray and white matter
  • central canal
  • 2 grooves
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

hole down the middle of the center of the cord; continuous with brain ventricles; both contain CSF

A

central canal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

the 2 grooves within the structure of the brain

A

anterior median fissure and posterior median sulcus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

considered the deep channel groove of the brian

A

anterior median fissure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

considered the small grooves of the brain

A

posterior median fissure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

swollen regions of the spinal cord. there is two of them

A

enlargements

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

the two enlargements of the spinal cord. why are they names this way?

A

cervical enlargement and lumbar enlargement. named this way because of the region they are found in

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

enlargement that is thick at the base of the neck

A

cervical enlargement

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

enlargement that is thick at the end of the spinal cord

A

lumbar enlargement

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

inferior most tip of the spinal cord; cone shaped

A

conus medullaris

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

means horse tail; bundle of nerves inferior to the spinal cord

A

cauda equina

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

inferior most spinal nerve

A

filum terminale

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

unmyelinated
contains cell bodies, dendrites, synapse.
projections called horns
cell bodies organized into nuclei

A

gray matter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

cell bodies found with the grey matter. are organized into nuceli

A

sensory and motor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

projections found int he gray matter

A

horns

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

interior horns of the gray matter

A

posterior gray horn
anterior gray horn
lateral gray horn

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

connection at the middle of the gray matter. central canal runs directly through it

A

gray commissure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

the gray comissures

A

anterior commissure

posterior commissure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

bundle of tracts

A

columns

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

columns within the white matter

A
  • posterior white column
  • anterior white column
  • lateral white column
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

tracts within the white matter

A

ascending tract and descending tract

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

tract within the white matter that is sending signal up to the brain– sensory

A

ascending tract

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

tract within the white matter that is sending signals down the spinal cord– motor function

A

descending tract

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
membrane covering the CNS. similar to both brain and spinal cord. are split into layers called mater
meninges
26
means mother. CT layers that surround the CNS
mater
27
space between meninges and vertebrae. contains BV and adipose
epidural space
28
what do the meningies connect to?
CT covering of spinal nerves
29
"tough mother". made of dense CT | durable. deep to the epidural space. superficial to the subdural space. stabilized by coccygeal ligament
dura mater
30
first spinal meningie
dura mater
31
"spidery mother" superficial to the subarchanoid space. CT(many pieces) looks like a spider web.
arachinoid mater
32
in between arachnoid mater and pia mater. contain CSF
subarchnoid space
33
"delicate mother". light layer adhering to cord. forms part of the filum terminale
pia mater
34
components of the spinal meninges
vertebra. epidural space. dura mater. subdural space. arachnoid mater. subarchnoid space. pis mater. neural tissues
35
spinal nerves
31 pair-- 8 cervical. 12 thoracic. 5 lunbar. 5 saccral. 1 coccygeal
36
nerve components
dorsal root | ventral root
37
nerve components of the dorsal root
dorsal root ganglia and soma. usually sensory
38
nerve components of the ventral root
no ganglion. usually motor
39
roots merge to form what?
spinal nerves
40
all roots go through what
intervertebral foramen
41
spinal nerve involves both....
sensory and motor neurons
42
connective tissue covering of nerve. surround the entire nerve
epineurium
43
connective tissue covering of nerve. surrounds bundles of 10 -100 axons (known as fasicles)
perineurium
44
connective tissue covering that surrounds each individual axon of each neuron and schwann cells
endoneurium
45
offshoots of a nerve once it exits the vertebrae. 3 types
rami
46
three types of rami
dorsal ramus, ventral ramus, ramus communicantes
47
innervates the skeletal muscle. the extremities. stomach/front
ventral rami
48
innervates the back
dorsal ramus
49
innervates the guts, liver, heart. autonomic and involuntary stuff
ramus communicante
50
a splitting in the ramus that separates sensory and motor fibers. two type of ramus communicantes
ramus communicantes
51
two types of ramus communicantes
white and gray communicantes
52
indicates the area that is innervated by a particular nerve. sensory innervation by specific spinal nerves. spinal cord damage would result in loss id sensation in this. a detection method
dermatomes
53
regions/ parts of the spine with plexuses
cervical. lumbar. sacral
54
groups of nerves that connect and interconnect with one another. intertwined within one another
plexuses
55
two plexuses in the cervical region
cervical and brachial
56
cervical plexus
C1-C4 and part of C5. innervates certain muscles of neck and torso. involves phrenic nerve
57
nerve associated with cervical plexus
phrenic nerve
58
phrenic nerve
C3, 4, and 5. goes to the diaphragm
59
brachial plexus
C4-C8 and T1.innervate the chest, upper back, arms
60
part of brachial plexus. innervates to anterior muscles of arsm and skin of forearm
musculocutaneous
61
part of brachial plexus. innervates the muscles of the forearm, hands, and skin of hands
ulnar nerve
62
part of brachial plexus, innervates the muscle of the forearm, hands, ans skin of hands
medial nerve
63
part of brachial plexus. innervates the posterior muscles of the arm and skin of the forearm and hand
radial nerve
64
the last thoracic, lumbar, and sacral nerves. may split into lumbar and sacral plexuses. innervates the lower limb regions
lumbosacral plexus
65
part of lumbarsacral plexus. innervates to abductors of the leg
obturator nerve
66
part of lumbosacral plexus. innervates to motor impulses of the leg and thigh. and receives sensory from skin of leg and thigh
femoral nerve
67
part of lumosacral plexus. innervates to muscles and skin in the thighs, legs, and feet
sciatic nerve
68
rapid automatic involuntary motor response to stimuli. help to preserve homeostasis. occur at spinal cord or brain stem. DO NOT REQUIRE CEREBRAL PROCESSING. can be modified by cerebral control
reflexes
69
classification for reflexes
by development. site of processing. mature of motor response. complexity of neural circuit
70
reflex classification by development
genetically and learned
71
development reflex. is a built in response
genetic reflex
72
development reflex. is acquired through repetition and or experience
learned reflex
73
site of processing response. impulse only goes to the spinal cord
spinal reflex
74
site of processing reflex. makes it to the brain
cranial reflex
75
nature of motor response reflex. influences the skeletal muscle. under involuntary control
somatic reflex
76
nature of motor response. influences the involuntary systems such as smooth muscle and glands.
visceral reflex
77
complexity of neural circuit reflex (how many synapses are involved- 1
monosynaptic
78
complexity of neural circuit reflex. how many synapses are involved- 2 or greater
polysnaptic

Anatomy (17 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions