Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Anatomy I > Lecture 19: Spinal Cord and Somatic NS > Flashcards

Lecture 19: Spinal Cord and Somatic NS Flashcards

1
Q

2 functional divisions of PNS

A

-visceral
-somatic

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

where do spinal nerves pass through

A

intervertebral foramina

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

anatomical divisions of nervous system

A

-PNS
-CNS

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

somatic NS innervates what structures (general)

A

-body wall (parietal structures)

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

somatic NS: function

A

voluntary motor control over skeletal muscle

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

what is the spinal nerve complex

A

somatic nervous system + part of ANS

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

gray matter contains what part of neuron

A

-cell bodies

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

white matter contains what part of neurons

A

axons

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

2 main structures within gray matter

A

-dorsal horn
-ventral horn

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

do spinal nerve levels and vertebral levels match

A

no

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

where does spinal cord end

A

-before vertebrae
-at conus medularis

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

where is spinal cord continuous with brain stem

A

foramen magnum

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

why is there differential growth between spinal cord and vertebral column

A

vertebral column grows faster

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

sensory = (afferent or efferent)

A

afferent

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

afferent =

A

towards CNS

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

motor = (afferent or efferent)

A

efferent

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

efferent =

A

away from CNS

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

2 divisions of visceral PNS

A

-ANS
-sensory

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

2 divisions of ANS

A

-sympathetic
-parasympathetic

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

how many cervical nerves and vertebrae are there

A

-7 vertebrae
-8 spinal nerves

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

why are there 8 cervical spinal nerves but only 7 vertebrae

A

spinal nerves for cervical vertebrae exit cranially to vertebrae from C1-C7

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

cervical vs thoracic/lumbar/sacral spinal nerves (exit location)

A

-cervical nerves pass cranially over vertebrae
-thoracic nerves pass caudally over vertebrae

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

where are somatic motor cell bodies found

A

ventral horn

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

where do somatic motor axons leave

A

ventral root

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

where are sensory cell bodies found

A

dorsal root ganglion

26
Q

where do sensory axons travel

A

dorsal root

27
Q

type of neurons found in dorsal root ganglion (hint: sensory)

A

pseudounipolar

28
Q

what is the mixed spinal nerve (what kind of information is found here)

A

-where dorsal and ventral roots are joined/fused
-mixed motor and sensory

29
Q

dorsal rami go to __________ musculature

A

epaxial

30
Q

ventral rami go to __________ musculature

A

hypaxial

31
Q

CNS gray matter contains (3)

A

-cell bodies of neurons (glial cells)
-dendrites
-neuropil

32
Q

what are CNS gray matter neurons organized into

A

nuclei

33
Q

is there connective tissue in CNS gray matter

A

no

34
Q

CNS white matter contains (2)

A

-axons, myelinated
-glial cells

35
Q

CNS white matter axons are organized into ________

A

tracts

36
Q

cauda equina

A

extension of dorsal and ventral roots to the same numbered vertebral level

37
Q

each spinal nerve complex is responsible for what

A

-1 dermatome/body segment

38
Q

epaxial muscles

A

-internal muscles of back
-longissimus, iliocostalis, transversospinalis

39
Q

somatic motor innervation to latissimus dorsi (or any other hypaxial muscle)

A

ventral horn –> ventral root –> mixed spinal nerve –> ventral ramus

40
Q

somatic sensory innervation from skin

A

ventral ramus –> mixed spinal nerve –> dorsal root ganglion (where sensory CELL BODIES are found) –> dorsal root –> dorsal horn

41
Q

meninges: definition

A

-coverings of spinal cord

42
Q

what kind of tissue are meninges made of

A

connective tissue

43
Q

3 meninges in spinal cord

A

-dura mater
-arachnoid mater
-pia mater

44
Q

what is the outermost/superficial layer of meninges

A

dura mater

45
Q

dura mater: features

A

-tough and thick
-continuous with dura of brain
-surrounded by extradural fat in epidural space

46
Q

where does dura mater extend to

A

laterally onto proximal spinal nerves

47
Q

where/how is dura mater anchored

A

-to caudal vertebrae via filum terminale

48
Q

what is the filum terminale

A

-portion of cauda equina
-fibrous extension of cord down to coccyx

49
Q

2 parts of filum terminale

A

-internus
-externus

50
Q

the internus is made out of which meninge

A

pia mater

51
Q

the externus is made out of which meninges

A

all 3

52
Q

location of arachnoid mater

A

deep and adherent to dura mater

53
Q

which meninge is filled with CSF

A

arachnoid

54
Q

the arachnoid mater encloses what space

A

subarachnoid space

55
Q

arachnoid mater: features

A

-thin and delicate
-spiderlike

56
Q

arachnoid mater is continuous with what structure

A

subarachnoid space around brain

57
Q

what is the innermost meningeal layer

A

pia mater

58
Q

pia mater location

A

attached to spinal cord

59
Q

what does pia mater create (2)

A

-denticulate ligaments
-filum terminal internus

60
Q

what are denticulate ligaments

A

lateral expansions of pia between rootlets to anchor spinal cord to dura mater

Anatomy I (35 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions