Shoulder Muscle Attachments

Question 1

Sternocleidomastoid

Answer 1

Origin: Mastoid process of temporal boneInsertion: Sternum & clavicle

Question 2

Levator scapulae

Answer 2

Origin: Upper cervical transverse processesInsertion: Superior angle of scapula

Question 3

Trapezius

Answer 3

Origin: Occiput, spinous processes C2-T12Insertion: Spine of scapula, acromion, outer 1/3 of clavicle

Question 4

Rhomboids

Answer 4

Origin: Spinous processes of upper thoracicInsertion: Medial border of scapula (runs inferiolateral to scapula)

Question 5

Serratus anterior

Answer 5

Origin: Lateral ribsInsertion: Medial-anterior border of scapula

Question 6

Pectoralis major

Answer 6

Origin: Medial clavicle, sternum & anterior ribsInsertion: Intertubercular groove of humerus (Lateral lip = greater tubercle)

Question 7

Pectoralis minor

Answer 7

Origin: Anterior upper ribsInsertion: Coracoid process

Question 8

Latissimus dorsi

Answer 8

Origin: Spinous process T7-T12 & thoracolumbar fascia, iliac crestInsertion: Intertubercular groove of humerus (Medial lip = lesser tubercle)

Question 9

Deltoid

Answer 9

Origin: Lateral clavicle, acromion, spine of scapulaInsertion: Deltoid tuberosity of humerus

Question 10

Supraspinatus

Answer 10

Origin: Supraspinous fossaInsertion: Greater tubercle of humerus

Question 11

Infraspinatus

Answer 11

Origin: Infraspinous fossaInsertion: Greater tubercle of humerus

Question 12

Teres minor

Answer 12

Origin: Lateral posterior scapulaInsertion: Greater tubercle of humerus

Question 13

Subscapularis

Answer 13

Origin: Subscapular fossaInsertion: Lesser tubercle of humerus

Question 14

Teres major

Answer 14

Origin: Inferior angle of scapulaInsertion: Intertubercular groove of humerus (Medial lip = lesser tubercle)

Question 15

Biceps brachii

Answer 15

Origin: LH - Supraglenoid tubercle, SH - Coracoid processInsertion: Radial tuberosity