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Foundations > Back & Rotator Cuff Muscles > Flashcards

Back & Rotator Cuff Muscles Flashcards

(125 cards)

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1
Q

Trapezius

Origin

A
  • Superior Nuchal Line
  • External occipital protuberance
  • SP of C7 to T12
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2
Q

Trapezius

Insertion

A
  • Lateral 1/3 of clavicle
  • Acromion
  • Spine of the scapula
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3
Q

Trapezius

Action

A
  • Rotate and elevate scapula (superior part)
  • retract scapula (middle)
  • depress scapula (inferior)
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4
Q

Trapezius

innervation

A

Motor: spinal accessory nerve (CN XI)

Proprioception: Anterior/ventral rami of C3, C4

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5
Q

Trapezius, blood supply

A

Transverse cervical artery

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6
Q

Latissimus Dorsi

Origin

A
  • SP T7-L5
  • Thoracolumbar fascia
  • sacrum
  • iliac crest
  • ribs 10-12
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7
Q

Latissimus dorsi

Insertion

A

Floor of the intertubercular sulcus of the humerus

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8
Q

Latissimus dorsi

Action

A

Extends, adducts, and medially rotates the humerus

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9
Q

Latissimus dorsi

Innervation

A

Thoracodorsal nerve (C6, C7, C8 of brachial plexus)

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10
Q

Latissimus dorsi

Blood supply

A

Thoracodorsal artery

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11
Q

Rhomboid major

Origin

A

SP T2-T5

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12
Q

Rhomboid major

Insertion

A

Medial border of scapula below its spine

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13
Q

Rhomboid major

Action

A

Retract and rotate scapula (to tilt glenoid cavity inferiorly)

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14
Q

Rhomboid major

Innervation

A

Dorsal scapular nerve (C5 of brachial plexus)

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15
Q

Rhomboid major

Blood supply

A

Dorsal scapular artery

deep branch of transverse cervical artery

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16
Q

Rhomboid minor

Origin

A

Ligamentum nuchae and SP C7-T1

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17
Q

Rhomboid minor

Insertion

A

Medial border of the scapula (at its spine)

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18
Q

Rhomboid minor

Action

A

Retract and rotate scapula (to tilt glenoid cavity inferiorly)

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19
Q

Rhomboid minor

Innervation

A

Dorsal scapular nerve (C5 of brachial plexus)

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20
Q

Rhomboid minor

Blood supply

A

Dorsal scapular artery

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21
Q

Levator scapulae

Origin

A

Transverse processes of C1-C4

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22
Q

Levator scapulae

Insertion

A

Superior angle of the scapula

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23
Q

Levator scapulae

Action

A

Elevates and rotates the scapula

to tilt the glenoid cavity inferiorly

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24
Q

Levator scapulae

Innervation

A

Dorsal scapular nerve (C5 of brachial plexus)

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25
Levator scapulae | Blood supply
Dorsal scapular artery | deep branch of transverse cervical artery
26
Deltoid | Origin
- Spine of the scapula - Acromion of the scapula - Lateral 1/3 of the clavicle
27
Deltoid | Insertion
Deltoid tuberosity of the humerus
28
Deltoid | Action
Abducts, flexes, and extends the humerus
29
Deltoid | Innervation
Axillary nerve
30
Deltoid | Blood supply
Posterior circumflex humeral artery
31
Supraspinatus | Origin
Supraspinous fossa of the scapula
32
Supraspinatus | Insertion
Superior facet of the greater tubercle of the humerus
33
Supraspinatus | Action
Abducts the humerus (mostly first 15 degrees)
34
Supraspinatus | Innervation
Suprascapular nerve (C5, C6 of brachial plexus)
35
Supraspinatus | Blood supply
Suprascapular artery
36
Infraspinatus | Origin
Infraspinous fossa of scapula
37
Infraspinatus | Insertion
Middle facet of the greater tubercle of the humerus
38
Infraspinatus | Action
Laterally rotates humerus
39
Infraspinatus | Innervation
Suprascapular nerve (C5, C6 of brachial plexus)
40
Infraspinatus | Blood supply
Supracapular artery
41
Subscapularis | Origin
Subscapular fossa of scapula
42
Subscapularis | Insertion
Lesser tubercle of the humerus
43
Subscapularis | Action
Medially rotates the humerus
44
Subscapularis | Innervation
Upper subscapular nerve & lower subscapular nerve | C5 and C6 of brachial plexus, respectively
45
Subscapularis | Blood supply
Subscapular artery
46
Teres major | Origin
Inferior angle of the scapula
47
Teres major | Insertion
Medial lip of the intertubercular sulcus of the humerus
48
Teres major | Action
Adducts and medially rotates the humerus
49
Teres major | Innervation
Lower subscapular nerve (C6 of brachial plexus)
50
Teres major | Blood supply
Subscapular and circumflex scapular arteries
51
Teres minor | Origin
Lateral border of the scapula
52
Teres minor | Insertion
Inferior facet of the greater tubercle of the humerus
53
Teres minor | Action
Laterally rotates the humerus
54
Teres minor | Innervation
Axillary nerve
55
Teres minor | Blood supply
Subscapular and circumflex scapular arteries
56
Serratus posterior superior | Origin
SP C7–T3 This is one of two intermediate muscles of the back
57
Serratus posterior superior | Insertion
Superior borders of ribs 2–5, lateral to their angles
58
Serratus posterior superior | Action
Elevates ribs 2–5
59
Serratus posterior superior | Innervation
Anterior rami of T2–T5
60
Serratus posterior superior | Blood supply
Posterior Intercostal arteries
61
Serratus posterior inferior | Origin
SP T11–L2 This is one of two intermediate muscles of the back
62
Serratus posterior inferior | Insertion
Inferior border of ribs 9–12, lateral to their angles
63
Serratus posterior inferior | Action
Depresses ribs 9–12
64
Serratus posterior inferior | Innervation
Anterior rami (ventral rami) of T9–T12
65
Serratus posterior inferior | Blood supply
Posterior Intercostal arteries
66
Splenius capitis | Origin
Ligamentum nuchae | SP C7-T4
67
Splenius capitis | Insertion
- Mastoid process | - Lateral one-third of superior nuchal line
68
Splenius capitis | Action
Unilateral—laterally flexes and rotates head or neck to same side Bilateral—extends head and neck
69
Splenius capitis | Innervation
Posterior (dorsal) rami of middle cervical nerves
70
Splenius capitis | Blood supply
Deep cervical artery & Descending branch of occipital artery
71
Splenius cervicis | Origin
SP T3–T6
72
Splenius cervicis | Insertion
TP C1–C3
73
Splenius cervicis | Action
Unilateral—laterally flexes and rotates head or neck to same side Bilateral—extends head and neck
74
Splenius cervicis | Innervation
Posterior (dorsal) rami of middle cervical nerves
75
Splenius cervicis | Blood supply
Deep cervical artery & Descending branch of occipital artery
76
``` Erector spinae (Spinalis) Origin ```
- Median sacral crest - Posterior surface sacrum - SP L and lower T - Medial part iliac crest
77
``` Erector spinae (Spinalis) Insertion ```
SP of T and C
78
``` Erector spinae (Spinalis) Action ```
Unilateral—laterally flexes VT to same side Bilateral—extends VT and head, stabilizes VT
79
``` Erector spinae (Spinalis) Innervation ```
Posterior rami of lower cervical nerves
80
``` Erector spinae (Spinalis) Blood supply ```
Cervical part : Occipital, deep cervical, & vertebral arteries Thoracic part: Dorsal branches of posterior intercostal, subcostal, and lumbar arteries Sacral part: Dorsal branches of lateral sacral arteries
81
``` Erector spinae (Longissimus) Origin ```
- Median sacral crest - Posterior surface sacrum - SP L and lower T - Medial part iliac crest
82
``` Erector spinae (Longissimus) Insertion ```
- Between tubercles and angles of ribs | - TP of T and C
83
``` Erector spinae (Longissimus) Action ```
Unilateral—laterally flexes VT to same side Bilateral—extends VT and head, stabilizes VT
84
``` Erector spinae (Longissimus) Innervation ```
Posterior rami of lower cervical nerves
85
``` Erector spinae (Longissimus) Blood supply ```
Cervical part : Occipital, deep cervical, & vertebral arteries Thoracic part: Dorsal branches of posterior intercostal, subcostal, and lumbar arteries Sacral part: Dorsal branches of lateral sacral arteries
86
``` Erector spinae (Iliocostalis) Origin ```
- Median sacral crest - Posterior surface sacrum - SP L and lower T - Medial part iliac crest
87
``` Erector spinae (Iliocostalis) Insertion ```
Angles of lower ribs and TP of C
88
``` Erector spinae (Iliocostalis) Action ```
Unilateral—laterally flexes VT to same side Bilateral—extends VT and head, stabilizes VT
89
``` Erector spinae (Iliocostalis) Innervation ```
Posterior rami of lower cervical nerves
90
``` Erector spinae (Iliocostalis) Blood supply ```
Cervical part : Occipital, deep cervical, & vertebral arteries Thoracic part: Dorsal branches of posterior intercostal, subcostal, and lumbar arteries Sacral part: Dorsal branches of lateral sacral arteries
91
Semispinalis capitis | Origin
- TP C7–T6/T7 | - AP C4–C6
92
Semispinalis capitis | Insertion
Between superior and inferior nuchal lines of occipital bone medially
93
Semispinalis capitis | Action
Unilateral—extends and laterally rotates head to opposite side Bilateral—extends head
94
Semispinalis capitis | Innervation
Posterior rami of spinal nerves
95
Semispinalis capitis | Blood supply
Occipital, deep cervical, & vertebral arteries
96
Semispinalis cervicis | Origin
TP T1–T5/T6
97
Semispinalis cervicis | Insertion
SP C2–C5
98
Semispinalis cervicis | Action
Unilateral—extends and laterally rotates neck to opposite side Bilateral—extends neck
99
Semispinalis cervicis | Innervation
Posterior rami of spinal nerves
100
Semispinalis cervicis | Blood supply
Cervical part : Occipital, deep cervical, & vertebral arteries Thoracic part: Dorsal branches of posterior intercostal arteries
101
Multifidus | Origin
- Sacrum - Ilium - TP T1–L5 - AP C4–C7
102
Multifidus | Insertion
SP L5–C2
103
Multifidus | Action
Extends and rotates VT to opposite side
104
Multifidus | Innervation
Posterior rami of spinal nerves
105
Multifidus | Blood supply
Cervical part : Occipital, deep cervical, & vertebral arteries Thoracic part: Dorsal branches of posterior intercostal, subcostal, and lumbar arteries Sacral part: Dorsal branches of lateral sacral arteries
106
Rectus capitis posterior major | Origin
SP of C2 (axis)
107
Rectus capitis posterior major | Insertion
Lateral inferior nuchal line of occipital bone
108
Rectus capitis posterior major | Action
Extends head and rotates face to same side
109
Rectus capitis posterior major | Innervation
Posterior ramus C1
110
Rectus capitis posterior major | Blood supply
Occipital artery
111
Rectus capitis posterior minor | Origin
Posterior tubercle of C1 (atlas)
112
Rectus capitis posterior minor | Insertion
Medial inferior nuchal line of occipital bone
113
Rectus capitis posterior minor | Action
Extends head
114
Rectus capitis posterior minor | Innervation
Posterior ramus of C1
115
Rectus capitis posterior minor | Blood supply
Occipital artery
116
Obliquus capitis superior | Origin
TP of C1 (atlas) | inferior attachment
117
Obliquus capitis superior | Insertion
Between lateral aspect of superior and inferior nuchal lines of occipital bone (superior attachment)
118
Obliquus capitis superior | Action
Extends head
119
Obliquus capitis superior | Innervation
Posterior ramus of C1
120
Obliquus capitis superior | Blood supply
Occipital artery
121
Obliquus capitis inferior | Origin
SP of C2 (axis)
122
Obliquus capitis inferior | Insertion
TP of C1 (atlas)
123
Obliquus capitis inferior | Action
Rotates face to same side
124
Obliquus capitis inferior | Innervation
Posterior ramus of C1
125
Obliquus capitis inferior | Blood supply
Occipital artery

Foundations (9 decks)

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