Brainscape's Knowledge GenomeTM

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


See full index

+ CAPS 391 > Peripheral Nervous System (Cranial Nerves, Spinal Nerves, Nerve Plexus) > Flashcards

Peripheral Nervous System (Cranial Nerves, Spinal Nerves, Nerve Plexus) Flashcards

1
Q

What is the peripheral nervous system (PNS)?

A

collection of nerve fibers and ganglia

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

What are ganglia?

A

aggregations of neuronal cell bodies

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

What are the components of the PNS?

A
  • 12 pairs of cranial nerves
  • 31 pairs of spinal nerves
  • autonomic (visceral) nerve fibers
  • associated sensory and autonomic ganglia
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Cranial Nerves

What are the first 2 pairs of cranial nerves?

A

extensions of the cerebrum

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

Cranial Nerves

What are the last 10 pairs of cranial nerves?

A

their nuclei are within the brainstem

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

Cranial Nerves

What type of nuclei are in the last 10 pairs of the cranial nerves?

A
  • sensory
  • motor
  • autonomic (parasympathetic)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Cranial Nerves

What is the sensory nuclei of the cranial nerves equivalent to in the spinal cord?

A

posterior horn

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

Cranial Nerves

What is the motor nuclei of the cranial nerves equivalent to in the spinal cord?

A

anterior horn

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

Cranial Nerves

What is the parasympathetic nuclei of the cranial nerves comparable to in the spinal cord?

A

lateral horn in S2-S4 segments

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

Cranial Nerves

What are the sensory ganglia of the cranial nerves similar to in the spinal nerves?

A

similar to dorsal root ganglia of spinal nerves

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

Cranial Nerves

Where do cranial nerves pass through?

A

different openings at the base of the neurocranium

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

Cranial Nerves

Where are all the cranial nerves?

A

distributed in the head and neck

EXCEPT: CN X (vagus), which distributes in the thorax and abdomen too

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

CN I

  • name
  • components
  • function
  • opening of skull
A

Name: olfactory

Components: sensory

Function: olfaction

Opening of the Skull: cribriform plate of ethmoid bone

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

CN II

  • name
  • components
  • function
  • opening of skull
A

Name: optic

Components: sensory

Function: vision

Opening of the Skull: optic canal

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

CN III

  • name
  • components
  • function
  • opening of skull
A

Name: oculomotor

Components: motor and autonomic

Function: 5 of the extra ocular muscles, ciliary muscle, and sphincter pupil

Opening of the Skull: superior orbital fissure

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

CN IV

  • name
  • components
  • function
  • opening of skull
A

Name: trochlear

Components: motor

Function: one of the extra ocular muscles

Opening of the Skull: superior orbital fissure

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

CN V: Trigeminal - first division

  • name
  • components
  • function
  • opening of skull
A

Name: opthalmic division

Components: sensory

Function: mainly cornea, skin of anterior scalp, upper eyelids, and nose

Opening of the Skull: superior orbital fissure

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

CN V: Trigeminal - second division

  • name
  • components
  • function
  • opening of skull
A

Name: maxillary division

Components: sensory

Function: mainly skin of face between lower eyelid and upper lip, nasal cavity, nasopharynx, upper teeth, and palates

Opening of the Skull: foramen rotundum

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

CN V: Trigeminal - third division

  • name
  • components
  • function
  • opening of skull
A

Name: mandibular division

Components: sensory and motor

Function: mainly skin covering the mandible and lateral scalp, lower teeth, oral cavity (except palates), and muscles of mastication

Opening of the Skull: foramen ovale

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

CN VI

  • name
  • components
  • function
  • opening of skull
A

Name: abducent

Components: motor

Function: one of the extra ocular muscles

Opening of the Skull: superior orbital fissure

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

CN VII

  • name
  • components
  • function
  • opening of skull
A

Name: facial

Components: sensory, motor, and autonomic

Function: tase of the anterior 2/3’s of the tongue, muscles of facial expression, submandibular, sublingual, and lacrimal glands

Opening of the Skull: internal acoustic (auditory) meatus

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

CN VIII

  • name
  • components
  • function
  • opening of skull
A

Name: vestibulocochlear

Components: sensory

Function: hearing and balance

Opening of the Skull: internal acoustic (auditory) meatus

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

CN IX

  • name
  • components
  • function
  • opening of skull
A

Name: glossopharyngeal

Components: sensory, motor, and autonomic

Function:

  • taste and general sensation of the posterior 1/3 of the tongue, stylopharyngeus msucle
  • general sensation of the oropharynx, carotid sinus, and carotid body

Opening of the Skull: jugular foramen

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

CN X

  • name
  • components
  • function
  • opening of skull
A

Name: vagus

Components: sensory, motor, and autonomic

Function:

  • general sensation of larynx, laryngopharynx, and trachea, pharyngeal muscles (except stylopharyngeus),
  • parasympathetic innervation of lungs, heaart, and parts of gastrointestinal tract

Opening of the Skull: jugular foramen

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

CN XI

  • name
  • components
  • function
  • opening of skull
A

Name: accessory

Components: motor

Function: sternocleidomastoid and trapezius

Opening of the Skull: jugular foramen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

CN XII

  • name
  • components
  • function
  • opening of skull
A

Name: hypoglossal

Components: motor

Function: muscles of the tongue (except palatoglossus)

Opening of the Skull: hypoglossal canal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Spinal Nerves

Where do spinal nerves leave the vertebral canal?

A

through the corresponding foramina

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Spinal Nerves

What are spinal nerves associated with?

A

segments of the spinal cord

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

Spinal Nerves

How is each spinal nerve connected to the spinal cord?

A

by ventral (anterior) root and dorsal (posterior) root

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

Spinal Nerves

What do ventral roots arise from?

What do they carry?

A

ventral horn of spinal cord

carries motor (efferent) fibers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

Spinal Nerves

What do dorsal roots arise from?

What do they carry?

A

dorsal horn of spinal cord

carries sensory (afferent) fibers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

Spinal Nerves

What type of nerve is the spinal nerve? Why?

A

mixed (motor and sensory) nerve

it is formed by the union of the motor (ventral) and sensory (dorsal) roots

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

Spinal Nerves

When do spinal nerves split?

What do they split into?

A

immediately after emerging from the vertebral canal

splits into ventral (anterior) and dorsal (dorsal) ramus/branch

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

Spinal Nerves

What are somatic nerve plexuses?

A

present in cervical, lumbar, and sacral regions

formed by ventral (anterior) rami

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

Spinal Nerves

Are ventral or dorsal rami thicker?

A

ventral

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

Spinal Nerves

What are the intercostal nerves?

A

ventral rami of thoracic spinal nerves T1-T11

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

Spinal Nerves

What is the subcostal nerve?

A

ventral ramus of thoracic spinal nerve T12

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

Spinal Nerves

Do intercostal nerves form a distinct nerve plexus?

A

no

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

Spinal Nerves

What do dorsal rami supply?

A

paravertebral musculature and the overlying skin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

Spinal Nerves

Where does the spinal cord end?

A

at the level of vertebra LI-LII

since the spinal cord ends there, ventral and dorsal roots of the lumbar, sacral, and coccygeal spinal nerves descend to the respective foramina before emerging from the vertebral canal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

Spinal Nerves

What is the cauda equina (horse’s tail)?

A

bundle of roots

since the spinal cord ends at the level of vertebra LI-LII, ventral and dorsal roots of the lumbar, sacral, and coccygeal spinal nerves descend to the respective foramina before emerging from the vertebral canal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
42
Q

Spinal Nerves

How are spinal nerves named?

A

after the spinal cord segments that give rise to them

43
Q

Spinal Nerves

cervical spinal nerves

A

C1-C8

  • emerge from vertebral canal above the corresponding cervical vertebrae
  • C8 passes between vertebra CVII and TI
  • ventral rami of these nerves form either cervical (C1-C4) or brachial (C5-T1) plexuses
44
Q

Spinal Nerves

thoracic spinal nerves

A

T1-T12

  • exit from vertebral canal below the corresponding thoracic vertebrae
  • intercostal nerves (the ventral rami of thoracic spinal nerves) travel in intercostal and abdominal muscles, and the skin of the ventral aspect of the trunk
  • ventral ramus of spinal nerve T1 contributes in brachial plexus
45
Q

Spinal Nerves

lumbar spinal nerves

A

L1-L5

  • exit from vertebral canal below the corresponding lumbar vertebrae
  • ventral rami of these nerves form lumbar plexus (L1-L4) and contribute in sacral plexus
46
Q

Spinal Nerves

sacral spinal nerves

A

S1-S5

  • emerge from vertebral canal through the corresponding sacral foramina
  • ventral rami of these nerves form the sacral plexus (L4-S4) and contribute in coccygeal plexus
47
Q

Spinal Nerves

coccygeal spinal nerves

A

Co

  • pair of spinal nerves
  • ventral rami forms coccygeal plexus with contribution from sacral nerves S4 and S5
48
Q

Spinal Nerves

What is the dermatome?

A

area of the skin that is innervated by a single spinal nerve or spinal cord segment

49
Q

Spinal Nerves

What is the myotome?

A

part of the skeletal muscle that is innervated by a single spinal nerve or spinal cord segment

50
Q

Nerve Plexuses

What are nerve plexuses?

A

intertwined network of nerve fibers

51
Q

Nerve Plexuses

What are the somatic plexuses formed by?

A

ventral rami of the spinal nerves (except T2-T11 nerves)

52
Q

Nerve Plexuses

What are the visceral (autonomic) plexuses formed by?

A

autonomic nerve fibers

53
Q

Nerve Plexuses

What do ventral rami in somatic plexuses do?

A

communicate with each other and redistribute their fibers

  • each branch of the somatic plexus carries fibers from several spinal nerves
  • fibers from each ventral ramus distributes via several different branches
54
Q

Nerve Plexuses - Cervical

Where is the cervical plexus?

A

deep to the sternocleidomastoid muscle

55
Q

Nerve Plexuses - Cervical

What is the cervical plexus composed of?

A

nerve loops formed by the ventral rami of the spinal nerves C1-C4

56
Q

Nerve Plexuses - Cervical

What are the 2 branches of the cervical plexus?

A

cutaneous

motor

57
Q

Nerve Plexuses - Cervical

Cutaneous Branch

  • name
  • distribution
A

Name: -

Distribution: posterior scalp, auricle, ventral and lateral aspects of the neck

58
Q

Nerve Plexuses - Cervical

Motor Branch (2)

  • name
  • distribution
A

Name: ansa cervicalis

Distribution: most of the infrahyoid muscles

Name: phrenic

Distribution: diaphragm

59
Q

Nerve Plexuses - Brachial

What is the brachial plexus?

A

major network that supplies the upper limb

60
Q

Nerve Plexuses - Brachial

What is the brachial plexus formed by?

A

union of ventral rami of spinal nerves C5-T1, which are considered as the roots of the plexus

61
Q

Nerve Plexuses - Brachial

What do the roots of the plexus join to form?

A

upper (superior), middle, and lower (inferior) trunks

62
Q

Nerve Plexuses - Brachial

Describe the upper (superior), middle, and lower (inferior) trunks.

A
  • each trunk divides into anterior and posterior division

- these divisions unite to form lateral, medial, and posterior cords of the brachial plexus

63
Q

Nerve Plexuses - Brachial

Where are the roots and trunks of the brachial plexus?

A

in neck region

64
Q

Nerve Plexuses - Brachial

Where are the divisions and cords of the brachial plexus?

A

mainly contained within axilla

65
Q

Nerve Plexuses - Brachial

What are the main branches (nerves) of the brachial plexus? (15)

A
  • long thoracic
  • dorsal scapular
  • suprascapular
  • lateral pectoral
  • musculocutaneous
  • median
  • medial pectoral
  • medial cutaneous nerve of arm
  • medial cutaneous nerve of forearm
  • ulnar
  • upper subscapular
  • thoracodorsal
  • lower subscapular
  • axillary
  • radial
66
Q

Nerve Plexuses - Brachial

Long Thoracic Nerve

  • origin
  • course
  • distribution
A

Origin: roots (C5-C7)

Course: runs on lateral aspect of thoracic wall

Distribution: serratus anterior muscle

67
Q

Nerve Plexuses - Brachial

Dorsal Scapular Nerve

  • origin
  • course
  • distribution
A

Origin: root C5

Course: descends on the medial border of scapula

Distribution: rhomboids and levator scapula muscles

68
Q

(don’t need to know)

Nerve Plexuses - Brachial

Suprascapular Nerve

  • origin
  • course
  • distribution
A

Origin: superior trunk

Course: enters supraspinous fossa and passes to infraspinous fossa

Distribution: supraspinatus and infraspinatus muscles

69
Q

(don’t need to know)

Nerve Plexuses - Brachial

Lateral Pectoral Nerve

  • origin
  • course
  • distribution
A

Origin: lateral cord

Course: pierces pectoralis minor muscle and enters pectoralis major muscle

Distribution: pectoralis major and minor muscles

70
Q

Nerve Plexuses - Brachial

Musculocutaneous Nerve

  • origin
  • course
  • distribution
A

Origin: lateral cord

Course: penetrates coracobrachialis muscle and descends in anterior arm

Distribution:

  • muscles of anterior compartment of arm
  • skin of lateral aspect of forearm
71
Q

Nerve Plexuses - Brachial

Median Nerve

  • origin
  • course
  • distribution
A

Origin: medial and lateral cords

Course: passes the anterior arm, cubital fossa, anterior forearm, and through carpal tunnel to enter hand

Distribution:

  • all muscles of anterior compartment of forearm (except 1 1⁄2 muscles), thenar muscles, and first and second lumbricals
  • skin of lateral 2/3’s of palm of hand, and most of lateral 3 1⁄2 fingers
72
Q

(don’t need to know)

Nerve Plexuses - Brachial

Medial Pectoral Nerve

  • origin
  • course
  • distribution
A

Origin: medial cord

Course: pierces pectoralis minor muscle and enters pectoralis major muscle

Distribution: pectoralis major and minor muscles

73
Q

(don’t need to know)

Nerve Plexuses - Brachial

Medial Cutaneous Nerve of Arm

  • origin
  • course
  • distribution
A

Origin: medial cord

Course: runs along medial side of arm

Distribution: most of skin of medial side of arm

74
Q

(don’t need to know)

Nerve Plexuses - Brachial

Medial Cutaneous Nerve of Forearm

  • origin
  • course
  • distribution
A

Origin: medial cord

Course: descends on medial side of forearm

Distribution: skin of medial side of forearm

75
Q

Nerve Plexuses - Brachial

Ulnar Nerve

  • origin
  • course
  • distribution
A

Origin: medial cord

Course: travels on medial side
of arm, passes behind
medial epicondyle, descends on medial side of forearm, passes in front of carpal tunnel and enters hand

Distribution:

  • 1 1⁄2 muscles in anterior forearm, hypothenar and interosseous muscles, the third and fourth lumbricals
  • skin of medial 1/3 of palmar and dorsal aspects of hand, medial 1 1⁄2 fingers
76
Q

(don’t need to know)

Nerve Plexuses - Brachial

Upper Subscapular Nerve

  • origin
  • course
  • distribution
A

Origin: posterior cord

Course: runs on posterior wall of axilla

Distribution: subscapularis muscle

77
Q

Nerve Plexuses - Brachial

Thoracodorsal Nerve

  • origin
  • course
  • distribution
A

Origin: posterior cord

Course: runs on posterior wall of axilla

Distribution: latissimus dorsi muscle

78
Q

(don’t need to know)

Nerve Plexuses - Brachial

Lower Subscapular Nerve

  • origin
  • course
  • distribution
A

Origin: posterior cord

Course: runs on posterior wall of axilla

Distribution: subscapularis and teres major muscles

79
Q

Nerve Plexuses - Brachial

Axillary Nerve

  • origin
  • course
  • distribution
A

Origin: posterior cord

Course: winds around surgical neck of humerus

Distribution:

  • deltoid and teres minor muscles
  • lower part of skin covering deltoid muscle
80
Q

Nerve Plexuses - Brachial

Radial Nerve

  • origin
  • course
  • distribution
A

Origin: posterior cord

Course: travels through radial groove, enters cubital fossa, divides into a deep (motor) and a superficial (cutaneous) branch

Distribution:

  • muscle of posterior compartments of arm and forearm
  • skin of posterior aspect of arm and forearm, plus lateral 2/3’s of posterior aspect of hand
81
Q

Nerve Plexuses - Lumbar

What is the lumbar plexus formed by? Where?

A

ventral rami of spinal nerves L1-L4 deep to psoas major muscle on the posterior abdominal wall

82
Q

Nerve Plexuses - Lumbar

What do the branches of the lumbar plexus do?

A

contribute in innervation of the muscles and skin of the lower limb

83
Q

Nerve Plexuses - Lumbar

What are the 5 main branches (nerves) of the lumbar plexus?

A
  • iliohypogastric and ilioinguinal
  • genitofemoral
  • lateral femoral cutaneous
  • obturator
  • femoral
84
Q

Nerve Plexuses - Lumbar

Iliohypogastric and Ilioinhuinal Nerve

  • course
  • distribution
A

Course: follows the abdominal wall from posterior to anterior

Distribution:

  • small contribution in innervations of anterolateral abdominal wall muscles
  • skin of pubic and inguinal regions
85
Q

(don’t need to know)

Nerve Plexuses - Lumbar

Genitofemoral Nerve

  • course
  • distribution
A

Course: descends anterior to psoas major muscle

Distribution:

  • cremaster muscle
  • skin of upper anterior aspect of thigh
86
Q

Nerve Plexuses - Lumbar

Lateral Femoral Cutaneous Nerve

  • course
  • distribution
A

Course: passes medial to the anterior superior iliac spine, deep to inguinal ligament, and enters the lateral thigh

Distribution: skin of lateral side of thigh

87
Q

Nerve Plexuses - Lumbar

Obturator Nerve

  • course
  • distribution
A

Course: descends medial to psoas major muscle

Distribution: muscles of medial compartment of thigh, and skin of medial side of thigh

88
Q

Nerve Plexuses - Lumbar

Femoral Nerve

  • course
  • distribution
A

Course: descends lateral to psoas major muscle, deep to inguinal ligament, and enters thigh

Distribution:

  • muscles of anterior compartment of thigh and iliacus muscle
  • skin of anterior and medial aspects of thigh, medial aspects of leg and foot
89
Q

Nerve Plexuses - Sacral

What is the sacral plexus formed by?

A

union of ventral rami of spinal nerves L4-S4 in front of posterior pelvic wall

90
Q

Nerve Plexuses - Sacral

What is the lumbosacral trunk formed by?

A

part of ventral ramus of spinal nerve L4 and entire ventral ramus of spinal nerve L5 unit

91
Q

Nerve Plexuses - Sacral

What does the lumbosacral trunk contribute to?

A

sacral plexus

92
Q

Nerve Plexuses - Sacral

What do the branches of the sacral plexus do?

A

supply majority of the muscles and skin of lower limb

93
Q

Nerve Plexuses - Sacral

What are the 6 main branches (nerves) of the sacral plexus?

A
  • superior gluteal
  • inferior gluteal
  • nerves to deep gluteal muscles
  • posterior femoral cutaneous
  • pudendal
  • sciatic (tibial nerve, common fibular nerve, deep fibular nerve, and superficial fibular nerve)
94
Q

Nerve Plexuses - Sacral

Superior Gluteal Nerve

  • course
  • distribution
A

Course: leaves pelvis through greater sciatic foramen to enter gluteal region

Distribution: gluteus medius, minimus, and tensor fascia lata muscles

95
Q

Nerve Plexuses - Sacral

Inferior Gluteal Nerve

  • course
  • distribution
A

Course: leaves pelvis through greater sciatic foramen to enter gluteal region

Distribution: gluteus maximus muscle

96
Q

(don’t need to know)

Nerve Plexuses - Sacral

Nerves to Deep Gluteal Muscles

  • course
  • distribution
A

Course: leaves pelvis through greater sciatic foramen to enter gluteal region

Distribution: deep gluteal muscles

97
Q

Nerve Plexuses - Sacral

Posterior Femoral Cutaneous Nerve

  • course
  • distribution
A

Course: leaves pelvis through greater sciatic foramen to enter gluteal and posterior thigh regions

Distribution: skin of posterior aspect of thigh

98
Q

Nerve Plexuses - Sacral

Pudendal Nerve

  • course
  • distribution
A

Course: leaves pelvis through greater sciatic foramen, enters gluteal region, and passes into perineum through lesser sciatic foramen

Distribution:

  • muscles of perineum
  • skin of perineum
99
Q

Nerve Plexuses - Sacral

Sciatic Nerve
- course

A

Course: leaves pelvis through greater sciatic foramen, enters gluteal region, descends
in posterior thigh, and splits above popliteal fossa into tibial and common fibular nerves

100
Q

Nerve Plexuses - Sacral

What are the tibial and common fibular nerves that the sciatic nerve splits into? (4)

A
  • tibial nerve
  • common fibular nerve
  • deep fibular nerve
  • superficial fibular nerve
101
Q

Nerve Plexuses - Sacral

Sciatic Nerve - Tibial Nerve

  • course
  • distribution
A

Course: descends through popliteal fossa, posterior leg, behind medial malleolus, and enters sole of foot and divides into medial and lateral plantar nerves

Distribution:

  • hamstring muscles (except short head of biceps femoris), muscles of posterior compartment of leg, muscles of sole of foot
  • most of the skin of posterior aspect of leg and dorsum of foot
102
Q

Nerve Plexuses - Sacral

Sciatic Nerve - Common Fibular Nerve

  • course
  • distribution
A

Course: descends through popliteal fossa, winds around the neck of fibula and divides into deep and superficial fibular nerves

Distribution:

  • muscles of anterior compartment of leg and dorsum of foot
  • skin of the web of big toe
  • muscles of lateral compartment of leg
  • skin of dorsum of foot (except web of big toe)
103
Q

Nerve Plexuses - Sacral

Sciatic Nerve - Deep Fibular Nerve

  • course
  • distribution
A

Course: descends in anterior leg and enters the dorsum of foot

Distribution:

  • muscles of anterior compartment of leg and dorsum of foot
  • skin of the web of big toe
104
Q

Nerve Plexuses - Sacral

Sciatic Nerve - Superficial Fibular Nerve

  • course
  • distribution
A

Course: descends in lateral leg and superficially enters the dorsum of foot

Distribution:

  • muscles of lateral compartment of leg
  • skin of dorsum of foot (except web of big toe)

+ CAPS 391 (28 decks)

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