Lab 3 - Upper Body - Shoulder Girdle Cont'd, Rotator Cuff and Upper Arm

Supraspinatus O - Supraspinous fossa of scapula I - Greater tubercle of humerus F - Stabilizes and provides strength to shoulder joint and initiates abduction

Supraspinatus

O - Supraspinous fossa of scapula

I - Greater tubercle of humerus

F - Stabilizes and provides strength to shoulder joint and initiates abduction

Infraspinatus O - Infraspinous fossa of scapula I - Greater tubercle of humerus F - Provides posterior strength to shoulder joint and laterally rotates humerus (external rotation)

Infraspinatus

O - Infraspinous fossa of scapula

I - Greater tubercle of humerus

F - Provides posterior strength to shoulder joint and laterally rotates humerus (external rotation)

Teres Major O - Lateral border/inferior angle of scapula I - Bicipital Groove of Humerus F - Shoulder extension, assists in adduction and medial rotation of humerus (internal rotation)

Teres Major

O - Lateral border/inferior angle of scapula

I - Bicipital Groove of Humerus

F - Shoulder extension, assists in adduction and medial rotation of humerus (internal rotation)

Subscapularis O - Subscapular fossa of scapula I - Lesser tubercle of humerus F - Provides anterior strength to shoulder joint, adduction and medial rotation of humerus (internal rotation)

Subscapularis

O - Subscapular fossa of scapula

I - Lesser tubercle of humerus

F - Provides anterior strength to shoulder joint, adduction and medial rotation of humerus (internal rotation)

Clavobrachialis (Clavodeltoid) O – Clavicle I - Deltoid Tuberosity of Humerus F – Flexion of shoulder and medial rotation of humerus

Clavobrachialis (Clavodeltoid)

O – Clavicle

I - Deltoid Tuberosity of Humerus

F – Flexion of shoulder and medial rotation of humerus

Acromiodeltoid O - Acromion I - Deltoid Tuberosity of Humerus F - Shoulder abduction

Acromiodeltoid

O - Acromion

I - Deltoid Tuberosity of Humerus

F - Shoulder abduction

Spinodeltoid O - Spine of Scapula I - Deltoid Tuberosity of Humerus F - Extension of shoulder, lateral rotation of humerus (external rotation)

Spinodeltoid

O - Spine of Scapula

I - Deltoid Tuberosity of Humerus

F - Extension of shoulder, lateral rotation of humerus (external rotation)

Brachialis O - Anterior shaft of humerus I - Coronoid process of ulna and ulnar tuberosity F - Elbow flexion

Brachialis

O - Anterior shaft of humerus

I - Coronoid process of ulna and ulnar tuberosity

F - Elbow flexion

Biceps Brachii O - Supraglenoid tubercle of scapula (Long Head), Coracoid process of scapula (Short Head) I - Radial tuberosity (Both Heads) F - Shoulder flexion, elbow flexion, and forearm supination (Both Heads)

Biceps Brachii

O - Supraglenoid tubercle of scapula (Long Head), Coracoid process of scapula (Short Head)

I - Radial tuberosity (Both Heads)

F - Shoulder flexion, elbow flexion, and forearm supination (Both Heads)

Triceps - Medial Head O - Posterior/medial aspect of humerus I - Olecranon process of ulna   F - Elbow extension

Triceps - Medial Head

O - Posterior/medial aspect of humerus

I - Olecranon process of ulna  

F - Elbow extension

Triceps - Lateral Head O - Posterior lateral aspect of humerus I - Olecranon process of ulna   F - Elbow extension

Triceps - Lateral Head

O - Posterior lateral aspect of humerus

I - Olecranon process of ulna  

F - Elbow extension

Triceps - Long Head Anterior View O - Infraglenoid tubercle of scapula I - Olecranon process of ulna   F - Shoulder extension and elbow extension

Triceps - Long Head Anterior View

O - Infraglenoid tubercle of scapula

I - Olecranon process of ulna  

F - Shoulder extension and elbow extension

Triceps - Long Head Posterior View

Triceps - Long Head Posterior View

Epitrochlearis - Not in Humans

Epitrochlearis - Not in Humans

Posterior Upper Body Musculature Purple: Trapezius Reflected Grey: Spinodeltoid Yellow: Teres Major Green: Infraspinatus Red: Supraspinatus Blue: Latissimus Dorsi

Posterior Upper Body Musculature

Purple: Trapezius Reflected

Grey: Spinodeltoid

Yellow: Teres Major

Green: Infraspinatus

Red: Supraspinatus

Blue: Latissimus Dorsi

Deltoids: Posterior View Blue: Clavodeltoid Red: Acromiodeltoid Yellow:  Spinodeltoid   

Deltoids: Posterior View

Blue: Clavodeltoid

Red: Acromiodeltoid

Yellow:  Spinodeltoid