muscles and actions

lab practical #3

buccinator

compresses cheek

frontalis

wrinkles forehead, raises eyebrows

occipitalis

anchors scalp posteriorly

orbicularis oculi

closes eye

zygomaticus major

raises corner of mouth

zygomaticus minor

raises corner of mouth

masseter

elevates mandible

temporalis

elevates and retracts mandible

splenius capitis

extends and rotates head

sternocleidomastoid

flexes and laterally rotates head

external oblique

flexes and laterally rotates trunk

internal oblique

flexes and laterally rotates trunk

rectus abdominis

flexes and rotates trunk

transversus abdominis

compresses abdomen

levator scapulae

elevates scapula

pectoralis minor

draws scapula downward and forward

rhomboid major

retracts scapula

rhomboid minor

retracts scapula

serratus anterior

protracts scapula

trapezius

elevates, retracts and rotates scapula

coracobrachialis

flexes and adducts arm

deltoid

abducts arm

infraspinatus

laterally rotates arm

latissimus dorsi

extends and adducts arm

pectoralis major

adducts and medially rotates arm

subscapularis

medially rotates arm

supraspinatus

abducts arm

teres major

extends, medially rotates, and adducts arm

teres minor

laterally rotates arm

biceps brachii

flexes and supinates forearm

brachialis

flexes forearm

brachioradialis

flexes forearm

pronator teres

pronates forearm

triceps brachii

extends forearm

extensor carpi radialis brevis/longus

extends and abducts hand

extensor carpi ulnaris

extends and addcuts hand

extensor digitorum

extends fingers

flexor carpi ulnaris

flexes and adducts hand

flexor carpi radialis

flexes and abducts hand

palmaris longus

tenses palmar fascia

adductor longus

adducts and medially rotates thigh

adductor magnus

adducts and medically rotates thigh

gluteus maximus

extends thigh

gluteus medius

abducts and medially rotates thigh

gracilis

abducts and medially rotates thigh

iliosoas

flexes thigh

sartorius

flexes, abducts, and laterally rotates thigh

tensor fascia lata

flexes and abducts thigh

biceps femoris

extends thigh and flexes leg

rectus femoris

flexes thigh and extends leg

semimembranosus

extends thigh and flexes leg

semitendinosus

extends thigh and flexes leg

vastus intermedius

extends leg

vastus lateralis

extends leg

vastus medialis

extends leg

extensor digitorum longus

extends toes

gastrocnemius

plantar flexes foot

soleus

plantar flexes foot

tibialis anterior

dorsiflexes and inverts foot

fibularis longus

plantar flexes and everts foot