Muscle List BIOL 241

Iliacus

Action: Hip flexion

Psoas Major

Action: Hip flexion

+origin/insertion

Sartorius

Origin: Anterior superior iliac spine

Insertion: Tibial tuberosity

Action: Hip and knee flexion

+origin/insertion

Rectus Femoris

Origin: Anterior inferior Iliac spine

Insertion: Base of Patella

Action: Knee flexion

+origin/insertion

Vastus lateralis

Origin: Greater trochanter of femur

Insertion: Lateral patella

Action: Knee extension

Vastus intermedius

Action: Knee extension

Vastus medialis

Action: Knee extension

Adductor longus

action: Hip adduction

Gracilis

action: Hip adduction

+origin/insertion

Gluteus maximus

action: Hip extension

Gluteus medius

action: Hip abduction

Semimembranosus

action: Hip extension

Semitendinosus

action: Hip extension

Biceps femoris (2 long head)(1 short head)

action: knee flexion

Fibularis (peroneus) longus

action: ankle dorsiflexion

Tibialis anterior

ankle dorsiflexion

Extensor hallucis longus

Action: ankle dorsiflexion

Flexor digitorum longus

action: plantar flexion of ankle

Extensor digitorum longus

Action: ankle dorsiflexion

+origin/insertion

Gastrocnemius

origin: Medial and lateral condyles of femur

insertion: calcaneus

action: plantar flexion of ankle

Soleus

action: plantar flexion of ankle

+origin/insertion

Flexor hallucis longus

Origin: Inferior posterior fibula

Insertion: Hallux

action: Hallux(big toe) flexion

+origin/insertion

Latissimus dorsi

Origin: Spines of lower thoracic and all lumbar vertebrae AND iliac crest

Insertion: intertubular sulcus of humerus.

Action: Shoulder extension

Trapezius

Levator scapulae

+origin/insertion

Deltoid

Origin: Acromion and spine of scapula, lateral third clavicle

Insertion: Deltoid tuberosity of humerus

+origin/insertion

Supraspinatus (1)

• Origin:

• Insertion:

Infraspinatus (2)

Teres minor (1)(Don’t need to know)

Teres major (2)

Subscapularis

+origin/insertion

Pectoralis major

• Origin: Sternal end of clavicle, sternum and ribs 1-6

• Insertion: Greater tubercle of humerus and intertubular sulcus (of humerus)

+origin/insertion

Biceps Brachii (short and long heads)

Brachialis

+origin/insertion

Triceps brachii (1)

Origin: Glenoid cavity of scapula and posterior shaft of humerus.

Insertion: olecranon process of ulna

+origin/insertion

Flexor carpi radialis

Flexor carpi ulnaris

Flexor digitorum superficialis

Flexor pollicis longus

Brachioradialis

+Origin/insertion

Extensor carpi radialis brevis

Extensor digitorum

Extensor carpi ulnaris

Extensor pollicis longus