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Anatomy 1 Flashcards

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0
Q

Lateral attachment (insertion) of trapezius

A

lateral third of clavicle, acromion and spine of scapula

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1
Q

Medial attachment (origin) of trapezius

A

medial 3rd of superior nuchal line, EOP, nuchal ligament, spinous processes of C7-T12

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2
Q

Innervation of trapezius

A

spinal accessory nerve (CN XI), C3 & C4 spinal nerve

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3
Q

actions of the trapezius

A

descending (superior)- elevates

ascending (inferior)- depresses middle.

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4
Q

Medial attachment (origin) of latissimus dorsi

A

spinous process of inferior 6 thoracic vertebrae, thoracolumbar fascia, iliac crest and inferior 3 or 4 ribs

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5
Q

lateral attachment (insertion) of latissimus dorsi

A

floor of intertubercular sulcus of humerus

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6
Q

innervation of latissimus dorsi

A

thoracodorsal nerve (C6, 7, 8)

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7
Q

actions of latissimus dorsi

A

extends, adducts, and medially rotates shoulder joint. raises body during climbing

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8
Q

what is the medial attachment of the levator scapulae

A

posterior tubercles of transverse processes of C1-4 vertebrae

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9
Q

lateral attachment of levator scapulae

A

medial border of scapula superior to root of spine

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10
Q

innervation of levator scapulae

A

dorsal scapular nerve C5 and cervical C3 & 4 spinal nerves

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11
Q

action of levator scapulae

A

elevates scapula and tilts its glenoid cavity inferiorly by rotating scapula

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12
Q

medial attachment of rhomboid major

A

spinous processes of T2-T5

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13
Q

lateral attachment of rhomboid major

A

medial border of scapula from level of spine to inferior angle

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14
Q

innervation of rhomboid major

A

dorsal scapular nerve

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15
Q

action of rhomboid major

A

retract scapula and rotate it to depress glenoid cavity. fixes scapula to thoracic wall

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16
Q

medial attachment of rhomboid minor

A

nuchal ligament, spinous processes of C7 and T1 vertebrae

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17
Q

lateral attachment of rhomboid minor

A

triangular area at medial end of scapular spine

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18
Q

innervation of rhomboid minor

A

dorsal scapular nerve C4 & C5

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19
Q

actions of rhomboid minor

A

retract scapula and rotate it to depress glenoid cavity

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20
Q

serrratus posterior superior

A

elevates ribs

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21
Q

serratus posterior inferior

A

depresses ribs ** respiration

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22
Q

origin of the splenius

A

arises from nuchal ligament and spinous processes of C7-T6 vertebrae

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23
Q

insertion of the splenius capitis

A

fibers run superolaterally to mastoid process of temporal bone and lateral third of superior nuchal line of occipital bone

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24
insertion of splenius cervicis
tubercles of transverse processes of C1-C3 or C4 vertebrae
25
innervation of splenius
posterior rami of spinal nerves
26
actions of splenius
alone : laterally fle neck and rotate head to side of active muscles together: extend head and neck
27
origin of iliocostalis, longissimus, spinalis
arises from broad tendon, iliac crest
28
insertion of iliocostalis
fibers run superiorly to angles of lower ribs and cervical transverse processes
29
insertion of longissimus
superiorly to ribs between tubercles and angles to transverse processes in thoracic and cervical regions to mastoid process of temporal bone
30
insertions of spinalis
fibers run superiorly to spinous processes in upper thoracic region to cranium
31
innervation of erector spinae
posterior rami of spinal nerves
32
actions of erector spinae
bilaterally: extend vertebral column and head as back is flexed, control movement by gradually lengethening their fibers unilaterally: laterally flex vertebral column
33
origin of semispinalis
arises from transverse processes of C4-T10 vertebrae
34
insertion of semispinalis
superomedially to occipital bone and spinous processes in upper thoracic and cervical regions spanning 4-6 segments
35
innervation of semispinalis
posterior rami of spinal nerves
36
actions of semispinalis
extends head and thoracic and cervical regions of vertebral column and rotates contralaterally
37
origin of multifidus
arises from posterior sacrum, PSIS, aponeurosis of erector spinae, mamillary processes of lumbar vertebrae, transverse processes of thoracic vertebrae
38
insertion of multifidus
THICKEST IN LUMBAR REGION fibers pass obliquely superomedially to entire length of spinus processes of vertebrae located 2-4 segments superior to origin
39
innervation of multifidus
posterior rami of spinal nerves
40
actions of multifidus
unilateral contracion rotates to contralateral side stabilizing vertebrae during local movements of vertebral column
41
origin of rotatores (brevis and longus)
arise from transverse processes of vertebrae best developed in thoracic region
42
insertion of rotatores
superior medially to attach to junction of lamina and transverse process or spinous process of vertebra immediately (brevis) or 2 segments (longus) superior to vertebra of origin
43
innervation of rotatores
posterior rami of spinal nerves
44
actions of rotatores
may function as organs of proprioreception; possible stabilize vertebrae and assist w local extension
45
origin of obliquus capitis inferior
spinous process of C2
46
insertion of obliquus capitis inferior
transverse process of c1 vertebra
47
innervation of obliquus capitis inferior
suboccipital nerve
48
origin of obliquus capitis superior
transverse process of C1
49
insertion of obliquus capitis superior
occiptial bone btw superior and inferior nuchal lines
50
innervation of obliquus capitis superior
suboccipital nerve
51
origin of rectus capitis posterior major
spinous process of C2
52
insertion of rectus capitis posterior major
lateral part of inferior nuchal line of occipital bone
53
innervation of rectus capitis posterior major
suboccipital nerve
54
actions of rectus capitis posterior major
extension
55
origin rectus capitis posterior minor
posterior tubercle on posterior arch of C1 vertebra
56
rectus capitis minor insertion
medial third of inferior nuchal line
57
rectus capitis posterior minor innervation
suboccipital nerve
58
origin of SCM
lateral surface of mastoid process of temporal bone and lateral half superior nuchal line
59
inferior attachment of SCM sternal head
anterior surface of manubrium of sternum
60
insertion of clavicular head of SCM
superior surface of medial third of clavicle
61
innervation of SCM
spinal accessory nerve C2, C3
62
actions of SCM
unilateral: laterally flex neck and rotates it so face is superiroly toward opposite side bilateral: extends neck at atlantooccipital joints. flexes vertebrae so chin is thrust towards manubrium
63
origin of anterior scalene
anterior tubercles of transverse processes of c3-6 vertebrae
64
insertion of anterior scalene
1st rib
65
innervation of anterior scalene
cervical spinal nerves c4-6
66
actions of anterior scalene
flexes neck laterally, elevates 1st rib during forced expiratio
67
origin of middle scalene
posterior tubercles of transverse processes of c4-7 vertebrae
68
insertion of middle scalene
superior surface of 1st rib, posterior to groove for subclavian artery
69
innervation for middle scalene
anterior rami of cervical spinal nerves
70
actions of middle scalene
flexes neck laterally elevates 1st rib during forced expiration
71
origin of posterior scalene
posterior tubercles of transverse processes of c4-6 vertebrae
72
insertion of posterior scalene
external border of 2nd rib
73
innervation of posterior scalene
anterior rami of cervical spinal nerves c7 & 8
74
action of posterior scalene
flexes neck laterally, elevates 2nd rib during forced expiration
75
what is the carotid sheath
tubular facial investment from cranial base and root of neck
76
what does the supraclavicular fossa do?
separates the 2 heads of SCM
77
what is the floor of posterior cervical triangle
prevertebral layer covering deep 4 muscles | levator, posterior & middle scalenes, splenius capitis
78
what is the roof of the posterior cervical triangle
investing layer of deep cervical fascia
79
spinal accessory nerve branch
CN xi
80
dorsal scapular nerve branch
C5
81
greater occiptial nerve branch
c2
82
suboccipital nerve branch
c1
83
lesser occipital nerve branch
c2,c3
84
great auricular nerve branch
c2,c3
85
transverse cervical nerve branch
c2,c3
86
supraclavicular nerve branch
c3,c4
87
phrenic nerve branch
c3,4,5
88
What are the borders of the posterior cervical triangle?
Posterior border SCM, anterior border of trapezius and clavicle

Gross Anatomy (7 decks)

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