Macro Muscles - 50 muscles

Supinator

Supinator

Flexor Digitorum

Masseter

platysma

sternocleidomastoid

*Splenius Capitis

Origin: Spinous process of C7 - T4

Insertion: Mastoid Process & occipital bone

Action: Cervical Extension, Rotation, flexion

*External intercostal

Origin: Inferior border of rib above

Insertion: Superior border of rib below

Action: Elevates rib cage during inspiration

*Quadratus Lumborum

Origin: Iliolumbar ligament and iliac crest

Insertion: Lower border of 12th rib, transverse process of lumbar vertebrae

Action: Depresses rib cage inferiorly and laterally flexes trunk

*External oblique

Origin: External surface of lower 8 ribs

Insertion: Anterior half of iliac crest and linea alba

Action: Compresses abdomen, contralaterally rotates and flexes vertebral column

Rectus Abdominus

Trapezius

Deltoid

Infraspinatus

*Triceps Brachii

origin: Long head, infra glenoid tubercle; Lateral head, Proximal portion of posterior humerus; Medial head, distal half of posterior humerus

Insertion: Olecranon process of ulna

Action: Extends humerus and ulna

Latissimus dorsi

*Pectoralis Major

Origin: Medial half of clavicle, sternum, costal cartilages, aponeurosis of external abdominal oblique

Insertion: Intertubular groove of humerus

Action: Flexes, adducts, and medially rotates humerus, draws body upward in climbing

*Biceps Brachii

Origin: Long head, supraglenoid tubercle; Short head, Coracoid process scapula

Insertion: Radial Tuberosity of the radius

Action: Flexes Radius and Humerus, and supinates forearm

Gracilis

Gluteus Maximus

*Biceps Femoris

Origin: Long head, Ischial Tuberosity; Short head, lateral supracondylar ridge of femur

Insertion: Head of fibula and lateral condyle of tibia

Action: Extends femur and flexes leg

Popliteus

*Sartorius

Origin: Anterior superior iliac spine

Insertion: Medial margin of tibial tuberosity

Action: Flexes both femur and tibia

*Vastus Lateralis

Origin: Intertrochanteric Line and linea aspera of femur

Insertion: Tibial tuberosity

Action: Extends tibia

*Tibialis Anterior

Origin: Upper half of tibia and interosseous membrane

Insertion: Base of first cuneiform and first metatarsal

Action: Dorsiflexes and inverts foot

*Gastrocnemius

Origin: Medial and lateral condyles of femur

Insertion: With soleus into calcaneus via calcaneal tendon

Action: Flexes tibia and plantar; flexes foot

Flexor Hallucis Longus

*Buccinator

Origin: Maxilla and Mandible

Insertion: Orbicularis Oris

Action: Presses cheeks against teeth and lips, as in whistling draws corner of mouth laterally, assists in chewing be keeping food between teeth.

Orbicularis Oris

Zygomaticus  

Flexor Carpi Radialis

Temporalis

Diaphragm

Pectoralis Minor

Supraspinatus

Subscapularis

Teres Major

Brachialis

Brachioradialis

Pronator Teres

Palmaris Longus

Orbicularis oculi

Gluteus Minimus

Adductor Magnus

Psoas Major

Semimembranosus

Semitendinosus

Rectus Femoris

Vastis Medialis

Vastus Intermedius

Soleus Muscle

Extensor Digitorum Longus