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