Back Superior To C7 - Back and Neck Flashcards Preview

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Flashcards in Back Superior To C7 - Back and Neck Deck (13)
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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

Splenius Capitis Origin

Nuchal ligament and spinous processes of C7-T3 or T4 vertebrae

7

Splenius Capitis Insertion

Fibers run superolaterally to mastoid process of temporal bone and lateral third of superior nuchal line of occipital bone

8

Splenius Capitis Innervation

Posterior rami of spinal nerves

9

Splenius Capitis Action

Acting alone: Laterally flex neck and rotate head side to side of active muscles

10

Splenius Cervicis Origin

Nuchal ligament and spinous processes of C7-T3 or T4 vertebrae

11

Splenius Cervicis Insertion

Tubercles of transverse processes of C1-C3 or C4 vertebrae

12

Splenius Cervicis Innervation

Posterior rami of spinal nerves

13

Splenius Cervicis Action

Acting alone: Laterally flex neck and rotate head side to side of active muscles