Arm

Question 1

Biceps Brachii

Answer 1

O:
Long head: Supraglenoid Tubercle
Short head: Coracoid Process

I: Radial Tuberosity

Action: Shoulder Flexion, Elbow Flexion, Supination of Forearm

Synergist: Pec Major, Brachialis, Supinator

Antagonist: Triceps Brachii, Pronator Teres

Question 2

Brachialis

Answer 2

O: Anterior Distal Shaft of Humerus
I: Coronoid Process (and Ulnar Tuberosity

Action: Flexion of Elbow

Synergist: Biceps Brachii

Antagonist: Triceps Brachii

Question 3

Coracobrachialis

Answer 3

O: Coracoid Process
I: Medial Proximal Shaft of Humerus

Action: Shoulder Flexion, Horizontal Adduction of Shoulder

Synergist: Pec Major, Biceps Brachii

Antagonist: Infraspinatus, Teres Minor

Question 4

Deltoid

Answer 4

O: Anterior: Lateral 1/3 of Clavicle
Middle: Acromion Process
Posterior: Spine of Scapula

I: Deltoid Tuberosity

Action:
Anterior: Shoulder Flexion, Horiz Adduction, Medial Rotation
Middle: Shoulder Abduction
Posterior: Shoulder Extension, Horiz Abduction, Lateral Rotation

Question 5

Triceps Brachii

Answer 5

O: Long head: Infraglenoid Tubercle
Medial: Posterior Shaft of Humerus
Lateral: Posterior Shaft of Humerus

I: Olecranon Process

Action: Shoulder Extension, Elbow Extension

Nerve: Radial Nerve

Synergist: Latissimus Dorsi, Anconeus

Antagonist: Pec Major, Biceps Brachii