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nervous sys intro brachial plexius Flashcards

1
Q

central nervous system components (CNS)

A

bran and spinal cord

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2
Q

peripheral nervous system components (PNS)

A

cranial nerves and spinal nerves

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3
Q

autonomic nervous system components (ANS)

A

sympathetic and parasympathetic

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4
Q

PNS pathways (2)

A

afferent and efferent pathway

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5
Q

afferent pathway carry information

A

to the CNS

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6
Q

efferent pathway carry information

A

from the CNS

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7
Q

how many pairs of cranial nerves?

A

12

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8
Q

how many pairs of spinal nerves?

A

31

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9
Q

ANS subdivisions (2)

A

sympathetic and parasympathetic system

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10
Q

sympathetic sys aka

A

thoracolumbar

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11
Q

parasympathetic sys aka

A

craniosacral

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12
Q

Define: nucleus

A

aggregation of dendrites and nerve cell bodies in the CNS

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13
Q

Define: ganglion

A

aggregation of dendrites and nerve cell bodies in the PNS

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14
Q

Define: nerve

A

bundle of fibers (axons) in the PNS

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15
Q

Define: tract

A

bundle of fibers (axons) in the CNS

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16
Q

Define: commissure

A

tract in the CNS that crosses from one side to the other

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17
Q

Define: white matter

A

areas of myelinated axons

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18
Q

Define: gray matter

A

areas of unmyelinated axons, cell bodies, and dendrites

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19
Q

Spinal Nerve Branches (5)

A 
dorsal primary ramus
ventral primary ramus
ramus recurrens
white ramus communicans
gray ramus communicans
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20
Q

ANS ganglions and nerve (3)

A

paravertebral ganglion
splanchnic nerve
prevertebral ganglion

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21
Q

Spinal cord: areas of grey matter

A

Horns

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22
Q

Spinal cord: areas of white matter

A

Column

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23
Q

Spinal cord ends at

A

S2

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24
Q

pre-ganglionic autonomic fibers =

A

white rami communicans

25
Q

sensory fibers enter…of spinal cord

A

posterior horns

26
Q

sensory fibers exit….of spinal cord

A

anterior horns

27
Q

how many cervical vertebrae?

28
Q

how many cervical spinal nerves?

29
Q

axillary sheath contents?

A

axillary artery
axillary vein
brachial plexus

30
Q

exit neck between scalenus anterior and scalenus medius muscles

A

ventral rami of C5-T1

31
Q

Dorsal scapular nerve: cervical nerve? Muscle?

A

C5

to rhomboid muscles

32
Q

Long thoracic nerve: cervical nerve? Muscle?

A

C5-7

to serratus anterior muscle

33
Q

posterior cord is formed by?

A

3 posterior divisions

34
Q

lateral cord is formed by?

A

anterior divisions of upper (sup) and middle trunks

35
Q

medial cord is formed by?

A

anterior division of lower (inf) trunk

36
Q

suprascapular nerve innervates:

A

supraspinatus and infraspinatus

37
Q

dorsal scapular nerve innervates:

A

rhomboids and leator scapulae

38
Q

long thoracic nerve innervates:

A

serratus anterior muscle

39
Q

upper subscapular nerve innervates:

A

subscapularis muscle

40
Q

medial pectoral nerve innervates:

A

pectoralis major and minor

41
Q

thoracodorsal nerve innervates:

A

latissimus dorsi

42
Q

lower subscapular nerve innervates:

A

subscapularis, teres major

43
Q

lateral pectoral never innervate:

A

pectoralis major

44
Q

musculocutaneous nerve supplies the…

A

anterior brachium

45
Q

Ulnar nerve spinal nerves?

46
Q

Superior (upper) trunk spinal nerve(s)?

A

C5 and C6 ventral rami

47
Q

middle trunk spinal nerve(s)?

A

C7 ventral ramus

48
Q

inferior (lower) trunk spinal nerve(s)?

A

C8 and T1 ventral rami

49
Q

superior trunk nerves?

A

suprascapular nerve and nerve to subclavius

50
Q

anterior division cords?

A

lateral and medial cords

51
Q

posterior division cord?

A

posterior cord

52
Q

lateral cord forms what trunks?

A

superior and middle trunks

53
Q

medial cord forms what trunks?

A

inferior trunk

54
Q

Terminal branches of posterior cord?

A

Axillary and radial

55
Q

Terminal branches of lateral cord?

A

musculocutaneous

56
Q

Terminal branches of medial cord?

57
Q

base of axilla formed by?

A

pectoralis major

58
Q

thalamus formed from?

A

diencephalon

Anat 1 (19 decks)

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