anatomy muscle movements

Internal Intercostals

Internal Intercostals

forced exhale

External Intercostals

used to inhale

External oblique

twisting action; support body; going to the bathroom and vomiting

Internal oblique

twisting action; support body; going to the bathroom and vomiting

Rectus abdominis

"sit up" muscles; rotate lumbar region of back

Transverse abdominis

stabilization; "suck it in" muscles; compress abdomen contents

Pectoralis major

arm flexion, rotates arm medially, adducts arm

Pectoralis minor

moves scapula forward and downward

Deltoid

height of arm; swinging arms when walking

Trapezius

shrugs shoulders

Latissimus dorsi

forced expiration; rowing a boat motion; abducting & rotating humerus

Biceps brachii

flexion at elbow

Brachialis

elbow flexion

Triceps brachii

extension at elbow

Sartorius

flexes abducts and laterally rotates thigh; flexes knee (cross legs motion)

Gluteus maximus

major thigh extensor

Gluteus medius

abducts and medially rotates thigh

Rectus femoris

extends knee and flexes thigh at hip

Vastus lateralis

extends and stabilizes knee

Vastus medialis

extends knee

Biceps femoris

extends thigh and flexes knee; laterally rotates knee

Semitendinosus

extends thigh and flexes knee

Seimembrandosus

extends thigh and flexes knee

Adductor

adducts, flexes and medially rotates thigh

Gracilis

adducts thigh, flexes and medially rotates thigh

Tibialis Anterior

inverts foot

Gastronemius

flexes foot

Soleus

flexes foot; good for dancing walking and running