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ANAT30007 > Superficial Layer Of Extrinsic Back Muscles > Flashcards

Superficial Layer Of Extrinsic Back Muscles Flashcards

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1
Q

What are the origins/proximal attachments for SUPERIOR FIBRES of TRAPEZIUS

A

base of skull
occipital protruberance
posterior ligaments of neck

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2
Q

What are the origins/proximal attachments for MIDDLE FIBRES of TRAPEZIUS

A

C7 spinous process
T1/2/3 vertebrae

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3
Q

What are the origins/proximal attachments for LOWER FIBRES of TRAPEZIUS

A

T4-12 spinous process

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4
Q

What are the insertion/distal attachments for SUPERIOR FIBRES of TRAPEZIUS

A

posterior aspect of lateral third of clavicle

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5
Q

What are the insertion/distal attachments for MIDDLE FIBRES of TRAPEZIUS

A

medial border of acromion process
upper border of scapular spine

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6
Q

What are the insertion/distal attachments for LOWER FIBRES of TRAPEZIUS

A

triangular space at base of scapular spine

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7
Q

what is the main actions of SUPERIOR FIBRES of trapezius?

A

scapular elevation
extension/rotation of head
extends neck

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8
Q

what is the main actions of MIDDLE FIBRES of trapezius?

A

elevation of scapula
upward rotation of scapula
adduction/retraction of scapula

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9
Q

what is the main actions of LOWER FIBRES of trapezius?

A

depression of scapula
upward retraction of scapula
adduction/retraction of scapula

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10
Q

what is the innervation of trapezius?

A

accessory nerve (CN XI) - motor
C3/4 - pain/proprioception

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11
Q

what is the arterial supply of the trapezius?

A

transverse cervical artery

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12
Q

what are the origins/proximal attachments of the latissimus dorsi?

A

T7-T12 spinous process
thoracolumbar fascia
iliac crest - posterior third
ribs 9-12
inferior angle of scapula

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13
Q

what are the insertions/distal attachments of the latissimus dorsi?

A

intertubercular sulcus of humerus

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14
Q

what is the mnemonic to remember insertion for latissimus dorsi?

A

Lady between two Majors
lady = latissimus dorsi
two majors = pec major, teres major

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15
Q

what is the innervation of the latissimus dorsi?

A

thoracodorsal nerve (C6-C8)

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16
Q

what is the arterial supply of the latissimus dorsi?

A

thoracodorsal artery
arteries from 9-11th posterior intercostal arteries
1-3rd lumbar arteries

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17
Q

where does the thoracodorsal nerve (which supplies the lat. dorsi) originate?

A

posterior cord of brachial plexus

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18
Q

what are the actions of the latissimus dorsi?

A

arm internal rotation
arm adduction
arm extension

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19
Q

what is the origin/proximal attachment of levator scapulae?

A

C1-4 transverse process

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20
Q

what is the insertion/distal attachment of the levator scapulae?

A

vertebral margin of scapula between superior angle and root of spine

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21
Q

what is the innervation of the levator scapulae?

A

C3/4
dorsal scapular nerve C5

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22
Q

what is the arterial supply of the levator scapulae?

A

descending scapular artery

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23
Q

what are the main actions of the levator scapulae?

A

elevates scapula
downward rotation of scapula

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24
Q

what is the origin/proximal attachment of rhomboid minor?

A

nuchal ligament
C7 and T1 spinous process

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25
what is the insertion/distal attachments of rhomboid minor?
medial border of scapular spine
26
what is the innervation of the rhomboid minor/major?
dorsal scapular nerve (C4/5)
27
what is the arterial supply to the rhomboid minor/major?
dorsal scapular artery
27
what is the origin/proximal attachment of the rhomboid major?
T2-T5 spinous process
28
what is the insertion/distal attachment of the rhomboid major?
medial border of scapula
29
what are the main actions of the rhomboids?
scapular retraction scapular elevation scapular rotation stabilisation
30
what is the origin/proximal attachments of the SERRATUS POSTERIOR - SUPERIOR?
C7-T1 spinous process nuchal ligament
31
what is the insertion/distal attachment of the SERRATUS POSTERIOR - SUPERIOR?
upper border of 2-5th ribs
32
what is the innervation of the SERRATUS POSTERIOR - SUPERIOR
T1-T5 posterior intercostal nerves
33
what is the main actions of the SERRATUS POSTERIOR - SUPERIOR
elevation of ribs during inspiration
34
what is the origin/proximal attachment of the SERRATUS POSTERIOR - INFERIOR?
T11-L2 spinous process
35
what is the insertion/distal attachment of the SERRATUS POSTERIOR - INFERIOR
lower border of 9th-12th ribs
36
what is the innervation of the SERRATUS POSTERIOR - INFERIOR?
T9-T12 posterior intercostal nerves
37
what are the main actions of the SERRATUS POSTERIOR - INFERIOR?
depression of ribs during expiration
38
what is the origin/proximal attachment of the splenius capitis?
lower half of ligaments nuchae (C4-C6) C7-T3 spinous process
39
what is the insertion/distal attachment of splenius capitis?
superior nuchal line mastoid process of temporal bone
40
what is the innervation of the splenius capitis?
lateral branches of posterior rami of C2-3
41
what is the blood supply of splenius capitis?
muscular branches of occipital artery
42
what is the main actions of splenius capitis? (bilaterally and unilaterally)
bilaterally: extension of head unilaterally: flexion/rotation of head keeps head erect
43
what is the origin of splenius cervicis?
T3-T6 spinous process
44
what is the insertion of splenius cervicis?
C1-C3 transverse processes
45
what is the innervation of splenius cervicis?
C5-8
46
what is the arterial supply of splenius cervicis?
muscular branches of occipital artery
47
what are the main actions of splenius cervicis? (bilaterally and unilaterally)
bilaterally: extend neck unilaterally: flex/rotate head/neck
48
what is the origin of the iliocostalis cervicis?
angle of ribs 3-6
49
what is the origin of iliocostalis thoracis?
ribs 7-12
50
what is the origin of iliocostalis lumborum?
iliac crest
51
what is the insertion of the iliocostalis cervicis
C4-C6 transverse process
52
what is the insertion of the iliocostalis thoracic?
ribs 1-6 C7 transverse process
53
what is the insertion of iliocostalis lumborum?
ribs 5-12 L1-L4 transverse process thoracolumbar fascia
54
what is the action of the erector spinae muscles? (bilateral and unilateral)
bilaterally: spine extension unilaterally: spine lateral flexion
55
what is the innervation of the erector spinae muscles?
dorsal rami of spinal nerves
56
what is the origin of longissimus capitis?
T1-T5 transverse process C4-C7 articular tubercle
57
what is the origin of longissimus cervicis?
T1-T5 transverse process
58
what is the origin of longissimus thoracis?
L1-L5 spinous/transverse process
59
what is the insertion of the longissimus capitis?
posterior margin of mastoid process
60
what is the insertion of the longissimus cervicis?
C2-C6 transverse process
61
what is the insertion of longissimus thoracis?
T1-T12 transverse process
62
what is the origin of spinalis capitis?
nuchal lines of occiput
63
what is the origin of spinalis cervicis?
C3/C4 spinous process
64
what is the origin of spinalis thoracis?
T11-L2 spinous process?
65
what is the insertion of spinalis capitis?
C7 T1
66
what is the insertion of spinalis cervicis?
C4-C6 of ligamentum nuchae
67
what is the insertion of spinalis cervicis?
T2-T8 spinous process
68
what is the proximal attachment of the SEMISPINALIS CAPITIS
C5-C8 articular process T1-6 transverse process
69
what is the distal attachments of SEMISPINALIS CAPITIS?
occiput between superior and inferior nuchal line
70
what is the innervation of the SEMISPINALIS CAPITIS
greater occipital nerve
71
what are the main actions of the SEMISPINALIS CAPITIS? (bilaterally and unilaterally)
bilaterally: head/neck extension unilaterally: head/neck rotation
72
what is the origin of SEMISPINALIS CERVICIS?
T1-T6 transverse process
73
what is the insertion of SEMISPINALIS CERVICIS?
C2-C6 spinous process
74
what is the innervation of SEMISPINALIS CERVICIS?
dorsal rami of cervical spinal nerves
75
what are the actions of SEMISPINALIS CERVICIS? (bilaterally and unilaterally)
bilaterally: extension of cervical spine unilaterally: lateral flexion of neck
76

ANAT30007 (3 decks)

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