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Back Inferior to C7 Muscles Flashcards

1
Q

Trapezius Origin

A

Medial third of superior nuchal line; external occipital protuberance; nuchal ligament; spinous processes of C7-T12 vertebrae

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2
Q

Trapezius Insertion

A

Lateral third of clavicle; acromion and spine of scapula

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3
Q

Trapezius Innervation

A

Spinal accessory nerve (CN XI) (motor fibers) and C3, C4 spinal nerves (pain and proprioceptive fibers)

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4
Q

Trapezius Action

A

Descending part elevates; ascending part depresses; and middle part(or all parts together) retracts scapula; descending and ascending parts act together to rotate glenoid cavity superiorly

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5
Q

Trapezius Roots

A

C3,C4

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6
Q

Latissimus Dorsi Origin

A

Spinous processes of the inferior 6 thoracic vertebrae, thoracolumbar fascia, iliac crest, and inferior 3 or 4 ribs

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7
Q

Latissimus Dorsi Insertion

A

Floor of intertubercular sulcus of humerus

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8
Q

Latissimus Dorsi Innervation

A

Thoracodorsal nerve (C6, C7, C8)

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9
Q

Latissimus Dorsi Action

A

Extends, adducts, and medially rotates humerus; raises body toward arms during climbing

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10
Q

Latissimus Dorsi Roots

A

C6, C7, C8

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11
Q

Rhomboid Minor Origin

A

Minor: nuchal ligament; spinous processes of C7 and T1 vertebrae

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12
Q

Rhomboid Minor Insertion

A

Minor: smooth triangular area at medical and scapular spine

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13
Q

Rhomboid Minor Innervation

A

Dorsal scapular nerve (C4, C5)

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14
Q

Rhomboid Minor Action

A

Retract scapula and rotate it to depress glenoid cavity; fix scapula to thoracic wall

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15
Q

Rhomboid Minor & Major Roots

A

C4, C5

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16
Q

Levator Scapulae Origin

A

Posterior tubercles of transverse processes of C1-C4 vertebrae

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17
Q

Levator Scapulae Insertion

A

Medical border of scapula superior to root of scapular spine

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18
Q

Levator Scapulae Innervation

A

Dorsal scapular (C5) and cervical (C3, C4) nerves

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19
Q

Levator Scapulae Action

A

Elevates scapula and rotates its glenoid cavity inferiorly by rotating scapula

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20
Q

Levator Scapulae Roots

A

C3, C4

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21
Q

Serratus Posterior Superior Origin

A

Nuchal ligament, spinous processes of C7 to T3 vertebrae

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22
Q

Serratus Posterior Superior Insertion

A

Superior borders of 2nd to 4th ribs

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23
Q

Serratus Posterior Superior Innervation

A

2nd to 5th intercostal nerves

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24
Q

Serratus Posterior Superior Action

A

Proprioception (elevate ribs)

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25
Serratus Posterior Inferior Origin
Spinous processes of T11 to L2 vertebrae
26
Serratus Posterior Inferior Insertion
Inferior borders of 8th to 12th ribs near their angles
27
Serratus Posterior Inferior Innervation
Anterior rami to T9 to T12 thoracic spinal nerves
28
Serratus Posterior Inferior Action
Proprioception (depress ribs)
29
Serratus Posterior Inferior Roots
T9-T12
30
Erector Spinae: Iliocostalis Origin
Arises by a broad tendon from posterior part of iliac crest, posterior surface of sacrum, sacroiliac ligaments, sacral and inferior lumbar spinous processes, and supraspinous ligament
31
Erector Spinae: Iliocostalis Insertion
Iliocostalis: Lumborum, thoracis, cervicis; fibers run superiorly to angles of lower ribs and cervical transverse processes
32
Erector Spinae: Iliocostalis Innervation
Posterior rami of spinal nerves
33
Erector Spinae: Iliocostalis Action
Acting bilaterally: extend vertebral column and head: as back is flexed, control movement via eccentric contraction
34
Transversospinal: Semispinalis Origin
Transverse Processes
35
Transversospinal: Semispinalis Insertion
Thoracis, cervicis, capitis; fibers run superomedially to occipital bone and spinous processes in thoracic and cervical regions. spanning 4-6 segments
36
Transversospinal: Semispinalis Innervation
Posterior rami of spinal nerves
37
Transversospinal: Semispinalis Action
Extends head and thoracic and cervical regions of vertebral column and rotates them contralaterally
38
Transversospinal: Multifidus Origin
Arises from posterior sacrum, posterior superior iliac spine of ilium, aponeurosis of erector spinae, sacroiliac ligaments, mammillary processes of lumbar vertebrae, transverse processes of T1-T3 articular processes of C4-C7
39
Transversospinal: Multifidus Insertion
Thickest in lumbar region; fibers pass obliquely superomedially to entire length of spinous processes, located 2-4 segments superior to proximal attachment
40
Transversospinal: Multifidus Innervation
Posterior rami of spinal nerves
41
Transversospinal: Multifidus Action
Stabilizes vertebrae during local movements of vertebral column
42
Transversospinal: Rotatores (brevis and longus) Origin
Arise from transverse processes of vertebrae; best developed in thoracic region
43
Transversospinal: Rotatores (brevis and longus) Insertion
Fibers pass superomedially to attach to junction of lamina and transverse process or spinous process of vertebra immediately (brevis) or 2 segments (longus) superior to vertebra of attachment
44
Transversospinal: Rotatores (brevis and longus) Innervation
Posterior rami of spinal nerves
45
Transversospinal: Rotatores (brevis and longus) Action
Stabilize vertebrae and assist with local extension and rotatory movements of vertebral column; may function as organs of proprioception
46
the c8 nerve falls between what vertebrae
C7 and T1
47
movements of the scapula on table
6.5
48
sacroiliac joint is complex because the posterior is blank but the anterior is blank
fibrous sympyses, synovial
49
there are blank ribs
12
50
rib articulates with transverse facet of blank vertebrae
corresponding thoracic
51
serratus posterior superior and inferior help with blank of the ribs rather than really elevating/depressing
proprioception (breathing)
52
erector spinae group
iliocostalis, longissimus, spinalis
53
parts of spinalis
thoracis, cervicis
54
parts of longissimus
thoracis, cervicis, capitis
55
parts of iliocostalis
lumborum, thoracis, cervicis
56
transversospinal group
semispinalis, multifidus, rotatores
57
parts of semispinalis
thoracis, cervicis, capitis
58
multifidus attaches to blank
mamillary process
59
rotatores two types
longus, brevis
60
where bronchii are largest and most noisy
triangle of auscultation
61
rotatores parts
thoracis, cervicis, capitis
62
semispinalis spans blank vertebral segments
4-6
63
multifidus spans blank vertebral segments
2-4
64
rotatores spans blank vertebral segments
1-2
65
Rhomboid major origin
Spinous processes of T2-T5 vertebrae
66
Rhomboid major insertion
Medial border of scapula from level of spine to inferior angle
67
Rhomboid major innervation
Dorsal scapular nerve (C4, C5)
68
Rhomboid major action
Retract scapula and rotate its glenoid cavity inferiorly; fix scapula to thoracic wall
69
Erector spinae: Spinalis origin
``` Arises by a broad tendon from posterior part of iliac crest, posterior surface of sacrum, sacro-iliac ligaments, sacral and inferior lumbar spinous processes, and supraspinous ligament ```
70
Erector spinae: Spinalis insertion
``` thoracis, cervicis, capitis; fi bers run superiorly to spinous processes in the upper thoracic region and to cranium ```
71
Erector spinae: Spinalis innervation
Posterior rami of spinal | nerves
72
Erector spinae: Spinalis action
``` - Acting bilaterally: extend vertebral column and head; as back is flexed, control movement via eccentric contraction - Acting unilaterally: laterally flex vertebral column ```
73
Erector spinae: Longissimus origin
``` Arises by a broad tendon from posterior part of iliac crest, posterior surface of sacrum, sacro-iliac ligaments, sacral and inferior lumbar spinous processes, and supraspinous ligament ```
74
Erector spinae: Longissimus insertion
``` thoracis, cervicis, capitis; fibers run superiorly to ribs between tubercles and angles to transverse processes in thoracic and cervical regions, and to mastoid process of temporal bone ```
75
Erector spinae: Longissiumus innervation
Posterior rami of spinal | nerves
76
Erector spinae: Longissimus action
``` - Acting bilaterally: extend vertebral column and head; as back is flexed, control movement via eccentric contraction - Acting unilaterally: laterally flex vertebral column ```

pt gross (17 decks)

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