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Flashcards in OINA broken down Deck (294)
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1

What is the origin of the trapezius?

The external occipital protuberance, ligamentum nuchae, spinous processes of C7 to T12

2

What is the insertion of the trapezius?

Posterior border of lateral third of the clavicle, acromion process, and the spine of the spatula

3

What is the innervation of the trapezius?

Spinal root of the accesory nerve CN XI

4

What is the action of the trapezius?

Elevation from the upper fibers, retraction from the middle fibers, depression from the lower fibers

5

What is the origin of latissimus dorsi

The spinous processes of the vertebrate T7-L5, thoracolumbar fascia, iliac crest, inferior 3-4 ribs, and the inferior angle of the scapula

6

Insertion of latissimus dorsi

Medial lip of the intertubercular groove of the humerus (anterior to teres major)

7

What is the innervation of latissimus dorsi

Thoracodorsal nerve

8

Action of the latissimus dorsi

Extends, adducts, and medially rotates the humerus, elevates the body when climbing

9

Origin of the levator scapula

Posterior tubercles of transverse processes of C1-C4 vertebrae

10

Insertion of levator scapula

Superior part of the scapula

11

Innervation of levator scapula

Dorsal scapula nerve C4-5

12

Action of the levator scapula

Elevate the scapula, rotate head to the same side(ipsilateral rotation)

13

Origin of rhomboid major

Spinous process of T2-T5

14

Insertion of rhomboid major

Medial border of the scapula from the level of the spine to the inferior angle

15

Nerve of the rhomboid major

Dorsal scapular nerve C4-5

16

Action of rhomboid major

Retract and downwardly rotates the scapula

17

Origin of the rhomboid minor

Spinous processes of C7-T1 and the ligamentum nuchae

18

Insertion of the rhomboid minor

Medial border of the scapula from the level of the spine to the superior angle

19

Nerve to rhomboid minor

Dorsal scapular nerve. C4-5

20

Action of rhomboid minor

Retracts and downwardly rotates the scapula

21

Origin of serratus posterior inferior

Spinous processes of T11-L2

22

Insertion of serratus posterior inferior

The inferior 3-4 ribs

23

Nerve of serratus posterior inferior

Ventral primary rami of last 4 thoracic nerves

24

Action of serratus posterior inferior

Depress the inferior 3-4 ribs to prevent superior pull by the diaphragm

25

Origin of erector spinae

Broad tendon that attaches to the iliac crest, sacrum, sacroiliac ligaments, and sacral and inferior lumbar spinous processes

26

Innervation of the erector spinae

Dorsal primary rami

27

Origin of the external abdominal oblique

External surface of the 5th-12th ribs

28

Insertion of external abdominal oblique

Linea alba, pubic crest, iliac crest, pubic symphysis

29

Innervation of external abdominal oblique

Inferior 5 thoracic nerves and subcostal nerve (T12) and iliohypogastric

30

Action of the external abdominal oblique

Flex, and rotate the trunk, laterally rotate the trunk, and compress the abdominal contents