Anatomy Lab 3

Craniofacial Muscles

1. Temporoparietalis

2. Orbicularis Oculi

3. Frontalis (part of epicranius (there is also an occipitalis))

4. Nasalis

5. Orbicularis Oris

1. Zygamaticus Minor

2. Zygomaticus Major

3. Risorius

4. Depressor Anguli Oris

5. Levator Labii Superioris

6. Depressor Labii Inferioris

Sternocleidomastoid Origin and Insertion, and movements

O: Manubrium/Clavicle

I: Mastoid Process

A: Flexion/Lateral Rotation of Head

Pectoralis Major: Origin and Insertion, and movements

O: Clavicle/Sternum/Costal Cartilages

I: Greater Tubercle of Humerus

A: Flexes/Medially Rotates/Adducts Arm

Deltoid Origin and Insertion, and movements

O: Clavicle/Acromion/Spine of Scapula

I: Deltoid Tuberosity of Humerus

A: Abducts the Arm

1. Supraspinatus

2. Infraspinatus

3. Teres Minor

4. Subscapularis

5. Teres Major is bigger and below Teres Minor but not part of Rotator Cuff

Biceps Bracci (Origin/Insertion/action of both heads)

O: (short head) corocoid process

O: (long head) supraglenoid tubercle

I: radial Tuberosity

A: Flexes and supinates arm

1. Coracobrachialis

2. Brachialis

1. Lateral Head: originates at posterior shaft of humerus

2. Long Head: originates at infraglenoid tubercle

3. Medial Head: Origniates at posterior shaft of humerus

I: Common tendon onto olecranon Process

A: Extends forearm

Superficial Anterior Forearm Muscles

Pinky to Thumb

1. Flexor Carpi Ulnaris

2. Flexor Digitorum Superficialis

3. Palmaris Longus

4. Flexor Carpi Radialis

5. Pronator Teres

Deep Anterior forearm muscles

Pinky to Thumb

1. Flexor Digitorum Profundus

2. Flexor Carpi Ulnaris

3. Flexor Policis Longus

4. Pronator Quadratus

5. Brachioradialis

Superficial Posterior Forearm Muscles

Thumb to Pinky

1. Brachioradialis

2. Extensor Carpi Radialis Longus

3. Extensor Carpi Radialis Brevis

4. Extensor Digitorum Communis

5. Extensor Digiti Minimi

6. Extensor Carpi Ulnaris

7. Anconeus

Deep Posterior Forearm Muscles

1. Supinator

2. Abductor Pollicis Longus

3. Extensor Pollicis Brevis

4. Extensor Pollicis Longus

5. Extensor Indicis

Thenar Hand Muscles (Thumb Side)

1. Opponens Policis

2. Abductor Pollicis Brevis

3. Flexor Pollicis Brevis

4. Abductor Pollicis

Hypothenar Hand Muscles (Pinky Side)

1. Abductor Digiti Minimi

2. Flexor Digiti Minimi