Posterior and Anterior Shoulder Girdle

Question 1

Trapezius 1

Answer 1

Origin: Occipital Bone and Upper Cervical SP
Insertion: Lateral 1/3 Clavicle
Action: UR scap, Elevate scap, add/retract scap, ipsilateral lat flex cervical spine, contralateral rotation of cervical spine
Innervation: Cranial XI, Ventral rami C2-C4

Question 2

Trapezius 2

Answer 2

Origin: Lower Cervical SP
Insertion: Acromion
Action: UR scap, elevate scap add/retract scap, ispilat lat flex cervical spine, contralateral rotation cervical spine
Innervation: Cranial XI, ventral rami C2-C4

Question 3

Trapezius 3

Answer 3

Origin: Upper Thoracic SP
Insertion: Scapular spine
Action: add/retract scap
Innervation: cranial XI, ventral rami C2-C4

Question 4

Trapezius 4

Answer 4

Origin: Lower Thoracic SP
Insertion: Medial Scapular Spine
Action: UR scap, depress scapula, add/retract scap
Innervation: Cranial XI, ventral rami C2-C4

Question 5

Rhomboid Major

Answer 5

Origin:Upper Thoracic SP
Insertion: Medial Border Scapula
Action: Add/retract scap, elevate scap, DR scap
Innervation: dorsal scapular nerve (C3-C5)

Question 6

Rhomboid Minor

Answer 6

Origin: Lower Cervical SP
Insertion: Medial border scapula
Action: add/retract scap, elevate scap, DR scap
Innervation: Dorsal scapular nerve (C3-C5)

Question 7

Levator Scapulae

Answer 7

Origin: upper cervical transverse processes
Insertion: superior angle scapula
Action: elevate scapula, DR scapula
Innervation: dorsal scapular nerve (C3-C5)

Question 8

Sternocleidomastoid

Answer 8

Origin: manubrium and medial 1/3 clavicle
Insertion: mastoid process superior nuchal line
Action: ipsilateral flexion cervical spine, contralateral rotation cervical spine, bilateral extension
Innervation: Cranial XI, ventral rami C1-C2

Question 9

Subclavius

Answer 9

Origin: superior surface of 1st rib
Insertion: inf surface clavicle
Action: stabilize clavicle
Innervation: nerve to subclavius

Question 10

pectoralis minor

Answer 10

Origin: anterior surface ribs 3-5
Insertion: coracoid process scapula
Action: ant tipping scap, abd/pro scapula, DR scapula, depression
Innervation: med (C8-T1) and lateral (C5-7 pectoral nerves

Question 11

Serratus Anterior Superior

Answer 11

Origin: lateral surface of ribs 1-5
Insertion: medial border scapula
Action: abd/pro scap, DR, stabilize medial border, elevation
Innervation: long thoracic nerve (C5-C7)

Question 12

Serratus Anterior Inferior

Answer 12

Origin: Lat Surface ribs 1-5
Insertion: medial border scapula
Action: abd/protraction scap, UR, stabilize medial border, depression
Innervation:long thoracic nerve (C5-C7)

Question 13

Supraspinatus

Answer 13

Origin: supraspinous fossa
Insertion: greater tuberosity humerus
Action: Abd GH
Innervation: Suprascapular nerve (C5-C7)

Question 14

Infraspinatus

Answer 14

Origin: infraspinous fossa
Insertion: greater tuberosity humerus
Action: ER GH, horizontal abd GH
Innervation:Axillary nerve (C5-C6)

Question 15

Teres Minor

Answer 15

Origin:Lateral border scapula
Insertion: greater tuberosity humerus
Action:ER GH, Horz abd GH
Innervation: Axillary Nerve (C5-C6)

Question 16

Subscapularis

Answer 16

Origin: Subscapular fossa scapula
Insertion: lesser tuberosity humerus
Action: IR GH, Horiz Adduct GH
Innervation: Upper (C5-C6) & Lower (C5-C6) Subscapular nerves