Sternocleidomastoid/Trapezius Flashcards
0
Q
What is the other origin of the Sternocleidomastoid muscle?
A
Medial clavicle
1
Q
What is the origin of the Sternocleidomastoid muscle?
A
Manubrium of the sternum
2
Q
What is the insertion of the Sternocleidomastoid muscle?
A
Mastoid process
3
Q
What is the nerve of the Sternocleidomastoid muscle?
A
Accessory nerve (XI)
4
Q
What is the action of the Sternocleidomastoid muscle?
A
- Flexes neck
- rotates head to opposite side
- side bends head to same side
5
Q
What is the origin of the Trapezius muscle?
A
Occipital bone
6
Q
What is the other origin of the Trapezius muscle?
A
Spinous processes C7 & T1-T12
7
Q
What is the 3 insertions of the Trapezius muscle?
A
- Acromion
- Scapular spine
- Lateral clavicle
8
Q
What is the nerve of the Trapezius muscle?
A
Accessory nerve (XI)
9
Q
What is the action of the Trapezius muscle?
A
- Stabilizes scapula in 3 planes
- elevates (upper) = shrugging
- retracts (middle)
- depression (lower)
