Lab Practical 3

Epicranius

Orbicularis oculi

Orbicularis oris

Masseter

Platysma

Sternocleidomastoid

Frontalis

Temporalis

Pectoralis major

Pectoralis minor

Serratus anterior

Deltoid

Supraspinatus

Infraspinatus

Subscapularis

Tres minor

Triceps brachii

Biceps brachii

Brachialis

Brachioradialis

Pronator teres

Abductor pollicis longus

Flexor carpi radialis

Gastrocnemius

Tibialis anterior

Quadriceps

Rectus femoris

Vastus medialis

Vastus intermedialis

Vastus lateralis

Biceps femoris

Semimembranosus

Semitendinosus

Gluteus maximus

Gluteus medius

Sartorius

epicranius

raises eyebrows and moves the scalp; and covers forehead and back of skull

orbicularis oculi

closes eyelids (blinking); circular muscle around eyes

orbicularis oris

closes&puckers lips; circular muscle around mouth

masseter

closes jaw (chewing); thick muscle along side of jaw

platysma

tenses neck skin and depresses lower lip/mandible; thin, superficial sheet across neck

sternocleidomastoid

flexes neck and rotates head; runs from sternum/clavicle to mastoid process

frontalis

raises eyebrow and wrinkles forehead; forehead portion of epicranius

temporalis

elevates and retracts mandible; fan shaped muscle on side

pectoralis major

flexes, adducts, medially rotates arm; large superfical chest muscle

pectoralis minor

protracts and depresses/stabilizes scapula; smaller muscle deep to pectoralis major

serratus anterior

protacats and upwardly rotates scapula; sawtoother shape slips along lateral ribs

deltoid

abducts, flexes, rotation; large triangular shoulder muscle

supraspinatus

initiates arm abduction; above spine of scapula

infarspinatus

laterally rotates arm; below spine of scapula

subscapularis

medially rotates arm; anterior surface of scapula

teres minor

laterally rotates arm; small muscle below infraspinatus

triceps brachii

elbow extension; posterior arm

biceps brachii

elbow extension and forearm supination; two-headed anterior arm muscle

brachialis

elbow flexion; deep to biceps

branchioradialis

elbow flexion; lateral forearm

pronator teres

forearm pronation; diagonal anterior forearm

abductor pollicis longus

thumb abduction; deep posterior forearm

flexor carpi radialis

wrist flexion and radial deviation; anterior forearm

gastrocnemius

plantar flexion and knee flexion; calf

tibialis anterior

doriflexion and inversion; front of shin

what are the quadriceps muscles?

rectus femoris; vastus medialis, intermedialis, lateralis

rectus femoris

knee extension and hip flexion; front of thigh

vastus medialis

knee extension; inner front thigh

vastus intermedialis

knee extension; deep to rectus femoris

vastus lateralis

knee extension; outer front thigh

biceps femoris

knee flexion and long head extends hip; posteromedial thigh

semimembranosus

knee flexion and hip extension; deep posteromedial thigh

semitendinosus

knee flexion and hip extension; posteromedial thigh

gluteus maximus

hip extension and lateral rotation

gluteus medius

hip abduction and pelvic stabilization; lateral hip

sartorius

hip flexion, abduction, lateral rotation, and knee flexion; diagonal across anterior thigh