Muscles of the Posterior Shoulder Girdle

Question 1

Name the Origin, Insertion, Action, and Nerve for:

Trapezius 1

Answer 1

O: Occipital bone & Upper C/S SP

I: Lateral 1/3 of clavicle

A: Up rot, Elevate, ADD scapula
Ipsil Lat Flex, Contra Rot C/S

N: CN XI & Ventral Rami C2-C4

Question 2

Name the Origin, Insertion, Action, and Nerve for:

Trapezius II

Answer 2

O: Lower C/S SP

I: Acromion

A: Up Rot, Elevate, ADD Scapula
Ipsil Lat Flex, Contra Rot C/S

N: CN XI & Ventral Rami C2-C4

Question 3

Name the Origin, Insertion, Action, and Nerve for:

Trapezius III

Answer 3

O: Upper T/S SP

I: Scapular Spine

A: Add Scapula

N: CN XI & Ventral Rami C2-C4

Question 4

Name the Origin, Insertion, Action, and Nerve for:

Trapezius IV

Answer 4

O: Lower T/S SP

I: Medial Scapular Spine

A: Up Rot, Depress, ADD Scapula

N: CN XI & Ventral Rami C2-C4

Question 5

Name the Origin, Insertion, Action, and Nerve for:

Rhomboid Major

Answer 5

O: Upper T/S SP

I: Medial border Scapula (inferior to scap spine)

A: ADD, Elevate, Down Rot Scapula

N: Dorsal Scapular N

Question 6

Name the Origin, Insertion, Action, and Nerve for:

Rhomboid Minor

Answer 6

O: Lower C/S SP

I: Medial border scapula (superior scap spine)

A: ADD, Elevate, Down Rot Scapula

N: Dorsal Scapular Spine

Question 7

Name the Origin, Insertion, Action, and Nerve for:

Levator Scapulae

Answer 7

O: Upper C/S TP

I: Superior Angle Scapula

A: Elevate, Down Rot Scapula

N: Dorsal Scapular N