Back Inferior to C7 Muscles Flashcards Preview

pt gross > Back Inferior to C7 Muscles > Flashcards

Flashcards in Back Inferior to C7 Muscles Deck (76)
Loading flashcards...
1

Trapezius Origin

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

2

Trapezius Insertion

Lateral third of clavicle; acromion and spine of scapula

3

Trapezius Innervation

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

4

Trapezius Action

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

5

Trapezius Roots

C3,C4

6

Latissimus Dorsi Origin

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

7

Latissimus Dorsi Insertion

Floor of intertubercular sulcus of humerus

8

Latissimus Dorsi Innervation

Thoracodorsal nerve (C6, C7, C8)

9

Latissimus Dorsi Action

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

10

Latissimus Dorsi Roots

C6, C7, C8

11

Rhomboid Minor Origin

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

12

Rhomboid Minor Insertion

Minor: smooth triangular area at medical and scapular spine

13

Rhomboid Minor Innervation

Dorsal scapular nerve (C4, C5)

14

Rhomboid Minor Action

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

15

Rhomboid Minor & Major Roots

C4, C5

16

Levator Scapulae Origin

Posterior tubercles of transverse processes of C1-C4 vertebrae

17

Levator Scapulae Insertion

Medical border of scapula superior to root of scapular spine

18

Levator Scapulae Innervation

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

19

Levator Scapulae Action

Elevates scapula and rotates its glenoid cavity inferiorly by rotating scapula

20

Levator Scapulae Roots

C3, C4

21

Serratus Posterior Superior Origin

Nuchal ligament, spinous processes of C7 to T3 vertebrae

22

Serratus Posterior Superior Insertion

Superior borders of 2nd to 4th ribs

23

Serratus Posterior Superior Innervation

2nd to 5th intercostal nerves

24

Serratus Posterior Superior Action

Proprioception (elevate ribs)

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