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Gross Anatomy Muscles > Superficial & Intermediate Muscles > Flashcards

Superficial & Intermediate Muscles Flashcards

0
Q

Trapezius

Insertion

A
  • Lateral third of clavicle
  • acromion
  • spine of scapula
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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

Innervation

A
  • Spinal accessory nerve(CN XI) (motor fibers);

- C3/C4 spinal nerves (pain and proprioceptive fibers)

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3
Q

Trapezius (Upper)

Action

A

elevates scapula

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4
Q

Trapezius (Lower) Action

A

Depresses, adducts, and posteriorly tilts scapula

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5
Q

Trapezius (Middle) Action

A

adducts scapula

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6
Q

Trapezius (Upper and Lower) Action

A

together upwardly rotates scapula

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7
Q

Trapezius (Scapula Fixed) Action

A

Upper trap ipsilat laterally flexes, contralat rotates head and neck, bilat extends head and neck

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8
Q

Latissimus Dorsi

Origin

A
  • spinous processes of T7-T12
  • Thoracolumbar Fascia
  • iliac crest
  • inferior 3 or 4 ribs
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9
Q

Latissimus Dorsi

Insertion

A

Floor of intertubercular groove of humerus

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10
Q

Latissimus Dorsi

Innervation

A

Thoracodorsal nerve (C6,C7, C8)

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11
Q

Latissimus Dorsi

Action

A
  • Extends, adducts, and medially rotates humerus

- Posteriorly tilts scapula

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12
Q

Rhomboid Major

Origin

A

Spinous Processes of T2-T5

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13
Q

Rhomboid Major

Insertion

A

Medial border of scapula from level of spine to

inferior angle

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14
Q

Rhomboid Major

Innervation

A

Dorsal scapular nerve (C4, C5)

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15
Q

Rhomboid Major

Action

A

-Adducts, elevates, and downwardly rotates
scapula
-Stabilizes scapula on thoracic wall

16
Q

Rhomboid Minor

Origin

A
  • Nuchal ligament

- spinousprocesses of C7 and T1vertebrae

17
Q

Rhomboid Minor

Insertion

A

Medial end of Scapular spine

18
Q

Rhomboid Minor

Innervation

A

Dorsal scapular nerve (C4, C5)

19
Q

Rhomvoid Minor

Action

A

-Adducts, elevates, and downwardly rotates
scapula
-Stabilizes scapula on thoracic wall

20
Q

Levator Scapulae

Origin

A

-Posterior tubercles of transverse processes of C1-C4 vertebrae

21
Q

Levator Scapulae

Insertion

A
  • Medial border of scapula

- superior to root of scapular spine

22
Q

Levator Scapulae

Innervation

A
  • Dorsal scapular nerve(C5)

- cervical nerves (C4,C5)

23
Q

Levator Scapulae

Action

A
  • Elevates and downwardly rotates scapula
  • scapula fixed: ipsilat laterally flexes & rotates
  • bilat extends head & neck
24
Q

Serratus Posterior Superior

Origin

A
  • Nuchal ligament

- spinousprocesses of C7-T3 vertebrae

25
Q

Serratus Posterior Superior

Insertion

A

-Superior borders of 2nd to 4th ribs

26
Q

Serratus Posterior Superior

Innervation

A

-Ventral rami T2-T5 thoracic spinal nerves

27
Q

Serratus Posterior Superior

Action

A

Elevates ribs

Gross Anatomy Muscles (12 decks)

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