Muscles of the Neck Flashcards
1
Q
Trapezius origin?
A
Occipital bone, ligamentum nuchae, spinous processes of C7-T12
2
Q
Trapezius insertion?
A
Clavicle, acromion of scapula, spine of scapula
3
Q
Trapezius innervation?
A
Accessory n. (CN XI)
4
Q
Sternocleidomastoid origin?
A
Manubrium, sternal end of clavicle
5
Q
Sternocleidomastoid insertion?
A
Mastoid process
6
Q
Sternocleidomastoid action?
A
Unilateral action: Lateral flexion, rotation of head to opposite side
Bilateral action: Flexion of head/neck
7
Q
Trapezius action?
A
Elevate and retract scapula
8
Q
Sternocleidomastoid innervation?
A
Accessory n. (CN XI)
9
Q
Platysma origin?
A
Fascia of deltoid and pectoralis major, acromion of scapula
10
Q
Platysma action?
A
Pulls lower lip inferiorly, tenses skin of neck
11
Q
Platysma insertion?
A
Skin of cheek and mandible
12
Q
Platysma innervation?
A
Facial n. (CN VII)
