Muscular System 2/2

Question 1

Supraspinatus

Answer 1

Origin: Surface of Supraspinous fossa
Insertion: Greater Tuberosity of Humerus
Action: Extends Humerus

Question 2

Cleidobrachialis

Answer 2

Origin: Clavical and fibers of the clavotrapezius
Insertion: Ulna
Action: Forearm flexion

Question 3

Acrominodeltoid

Answer 3

Origin: Acromion Process
Insertion: Surface of other shoulder muscles
Action: Raises and rotates humerus

Question 4

Scapuladeltoid

Answer 4

Origin: Scapula Spine
Insertion: Deltoid ridge of humerus
Action: Raises and rotates humerus

Question 5

Infraspinatus

Answer 5

Origin: Surface Infraspinous fossa of scapula
Insertion: Greater tuberosity of humerus
Action: Rotates humerus

Question 6

Triceps Brachii Long Head

Answer 6

Origin: Scapula and axillary border
Insertion: Olecranon Process
Action: Forearm extension

Question 7

Triceps Brachii Medial Head

Answer 7

Origin: Dorsal surface of humerus
Insertion: Olecranon Process
Action: Extension of forearm

Question 8

Biceps Brachii

Answer 8

Origin: Glenoid Fossa
Insertion: Radius
Action: Flexor of forearm

Question 9

Brachialis

Answer 9

Origin: Lateral surface of humerus
Insertion: Ulna
Action: Flexor of forearm