Back Superior To C7 - Back and Neck

Question 1

Trapezius Origin

Answer 1

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

Question 2

Trapezius Insertion

Answer 2

Lateral third of clavicle; acromion and spine of scapula

Question 3

Trapezius Innervation

Answer 3

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

Question 4

Trapezius Action

Answer 4

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

Question 5

Trapezius Roots

Answer 5

C3,C4

Question 6

Splenius Capitis Origin

Answer 6

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

Question 7

Splenius Capitis Insertion

Answer 7

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

Question 8

Splenius Capitis Innervation

Answer 8

Posterior rami of spinal nerves

Question 9

Splenius Capitis Action

Answer 9

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

Question 10

Splenius Cervicis Origin

Answer 10

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

Question 11

Splenius Cervicis Insertion

Answer 11

Tubercles of transverse processes of C1-C3 or C4 vertebrae

Question 12

Splenius Cervicis Innervation

Answer 12

Posterior rami of spinal nerves

Question 13

Splenius Cervicis Action

Answer 13

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