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ANATOMY > Back Muscles > Flashcards

Back Muscles Flashcards

1
Q

Trapezius: Origin

A
  • Medial 1/3 superior nuchal line
  • Nuchal ligament
  • Occipital protuberance
  • Spinal processes C7-T12
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2
Q

Trapezius: Insertion

A
  • Lateral clavicle
  • Acromion
  • Spine of scapula
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3
Q

Trapezius: Function

A

U: elevate
M: retract
L: depress

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4
Q

Trapezius: Innervation

A

Spinal Accessory XI & C3-C4

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5
Q

Latissimus Dorsi: Origin

A
  • Sp. Processes T7-L5
  • Thoracolumbar Fascia
  • Iliac crest
  • Lower 3/4 ribs
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6
Q

Latissimus Dorsi: Insertion

A

Edge of bicipital groove of humerus

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7
Q

Latissimus Dorsi: Function

A

Extends, adducts, medially rotates

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8
Q

Latissimus Dorsi: Innervation

A

Thoracodorsal nerve (C6-8)

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9
Q

Rhomboid Major: Origin

A

Sp. processes T2-5

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10
Q

Rhomboid Major: Insertion

A

Medial border scapula

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11
Q

Rhomboid Major: Function

A

Retracts (adducts) and elevate scapula

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12
Q

Rhomboid Major: Innervation

A

Dorsal scapular nerve (C4,5)

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13
Q

Rhomboid Minor: Origin

A
  • Nuchal ligament
  • Sp. Processes C7-T1
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14
Q

Rhomboid Minor: Insertion

A

Medial end of scapular line

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15
Q

Rhomboid Minor: Function

A

Retracts (adducts) and elevate scapula

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16
Q

Rhomboid Minor: Innervation

A

Dorsal scapular nerve (C4,5)

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17
Q

Levator Scapulae: Origin

A

Tubercles transverse processes C1-C4

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18
Q

Levator Scapulae: Insertion

A

Medial border above spine

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19
Q

Levator Scapulae: Function

A

Elevates scapula

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20
Q

Levator Scapulae: Innervation

A

Cervical nerves C3, 4 and Dorsal Scapular nerve (C5)

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21
Q

Serratus Posterior Superior: Origin

A
  • Nuchal ligament
  • Spinous processes C7-T3
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22
Q

Serratus Posterior Superior: Insertion

A

Superior borders ribs 2-5

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23
Q

Serratus Posterior Superior: Function

A

Elevate ribs

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24
Q

Serratus Posterior Superior: Innervation

A

Intercostal nerves 2-5

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25
Serratus Posterior Inferior: Origin
Spinous Processes T11-L3
26
Serratus Posterior Inferior: Insertion
Inferior borders ribs 9-12 near angle
27
Serratus Posterior Inferior: Function
Depress ribs
28
Serratus Posterior Inferior: Innervation
Anterior rami T9-T12
29
Splenius Capitis: Origin
- Nuchal ligament - Spinous processes C7-T4
30
Splenius Capitis: Insertion
- Mastoid process - Lateral 1/3 superior nuchal line
31
Splenius Capitis: Function
Bilaterally: extends head Unilaterally: laterally bends and rotates face to the ipsilateral side
32
Splenius Capitis: Innervation
Posterior rami of cervical spinal nerves
33
Splenius Cervicis: Origin
Spinous process T3-T6
34
Splenius Cervicis: Insertion
Tubercles of transverse processes C1 to C3/4
35
Splenius Cervicis: Function
Bilaterally: extends head Unilaterally: laterally bends and rotates face to the ipsilateral side
36
Splenius Cervicis: Innervation
Posterior rami of cervical spinal nerves
37
Spinalis: Origin
- Posterior sacrum - Iliac crest - Sacrospinous ligament - Supraspinous ligament - SP of lower lumbar & sacral vertebrae
38
Spinalis: Insertion
Spinal processes of upper thoracic & midcervical vertebrae
39
Spinalis: Function
Bilaterally: extends vertebral column & head Unilaterally: laterally flexes vertebral column & turns head to contracting side (ipsilateral)
40
Spinalis: Innervation
Dorsal rami of spinal nerves
41
Longissimus: Origin
- Posterior sacrum - Iliac crest - Sacrospinous ligament - Supraspinous ligament - SP of lower lumbar & sacral vertebrae
42
Longissimus: Insertion
- Between tubercles & angles of ribs - TP of thoracic & cervical vertebrae - Mastoid process
43
Longissimus: Function
Bilaterally: extends vertebral column & head Unilaterally: laterally flexes vertebral column & turns head to contracting side (ipsilateral)
44
Longissimus: Innervation
Dorsal rami of spinal nerves
45
Iliocostalis: Origin
- Posterior sacrum - Iliac crest - Sacrospinous ligament - Supraspinous ligament - SP of lower lumbar & sacral vertebrae
46
Iliocostalis: Insertion
Angles of lower ribs & cervical TP
47
Iliocostalis: Function
Bilaterally: extends vertebral columb & head Unilaterally: laterally flexes vertebral column & turns head to contracting side (ipsilateral)
48
Iliocostalis: Innervation
Dorsal rami of spinal nerves
49
Triangle of Auscultation
Superior: Trapezius Lateral: Rhomboid Major Inferior: Latissimus Dorsi Floor (deep): 6th intercostal space
50
Lumbar Triangle
Lateral: External Oblique Medial: Latissimus Dorsi Inferior: Iliac Crest Floor: Internal Oblique muscle
51
Semispinalis group: Origin
Transverse Process of C4-T12
52
Semispinalis group: Insertion
- Spinal process of cervical & thoracic regions - Medial area between the superior and inferior nuchal lines
53
Semispinalis group: Function
Bilaterally: extends vertebral column Unilaterally: causes trunk to turn or rotate in the contralateral direction
54
Semispinalis group: Innervation
Dorsal rami of spinal nerve
55
Multifidus group: Origin
- Sacrum - Ilium - TP of T1-T12 - Articular processes of C4-C7
56
Multifidus group: Insertion
SP of vertebrae above, spanning two to four segments
57
Multifidus group: Innervation
Dorsal rami of spinal nerve
58
Multifidus group: Function
Stabilizes vertebrae during local movements of vertebral column
59
Rotatores: Origin
TP of cervical, thoracic & lumbar regions
60
Rotatores: Insetion
Junction of lamina and TP or SP above, spanning one or two segments
61
Rotatores: Innervation
Dorsal rami of spinal nerve
62
Rotatores: Function
Stabilize, extend and rotate spine
63
Rectus Capitis Posterior Major
Origin: Spine of C2 Insertion: Lateral, inferior nuchal line Function: Extension of head, rotation of face to same side as muscle
64
Rectus Capitis Posterior Minor
Origin: Tubercles of posterior arch of C1 Insertion: Median, inferior nuchal line Function: Extension of head
65
Obliquus Capitis Superior
Origin: TP of C1 Insertion: Occipital bonne Function: Extension of head and bends it to same side
66
Obliquus Capitis Inferior
Origin: Spine of C2 Insertion: TP of C1 Function: Rotates head to same side
67
Suboccipital Triangle
Medial: Rectus capitis posterior major Lateral: Obliquus capitis superior Inferior: Obliquus capitis inferior
68
What nerve does the suboccipital triangle contain?
- Dorsal ramus of C1 spinal nerve (Suboccipital n.) - Vertebral artery

ANATOMY (1 decks)

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