41 terms

Muscles and their Functions

zygomaticus major and minor
used in smiling
used to suck in your cheeks
orbicularis oculi
used in blinking and squinting
depressor anguli oris
used to pout (pull the corners of mouth downwards)
epicranius (frontal belly)
raises eyebrows for a questioning expression
corrugator supercilii
used to form the vertical frown crease on your forehead
orbicularis oris
your "kisser"
prime mover to raise the mandible
tenses skin of the neck during shaving
rectus abdominus
a major spine flexor
latissimus dorsi
prime mover for arm extension
pectoralis major
prime mover for arm flexion
external oblique, internal oblique, transverse abdominus, rectus abdominus
assume major responsibility for forming the abdominal girdle
prime mover of shoulder abduction
latissimus dorsi, pectoralis major
important in shoulder adduction; antagonists of the shoulder abductor
serratus anterior
moves the scapula forward and rotates scapula upwards
external intercostals
small, inspiratory muscles between the ribs; elevate the ribs
extends the head
pull the scapula medially
biceps brachii
flexes the forearm and supinates the hand
synerhist for supination of hand
brachialis; brachioradialis
forearm flexors; no role in supination
triceps brachii
elbow extensor
flexor carpi radialis
power wrist flexor and abductor
flexor digitorum superficialis
flexes wrist and middle phalanges
pronator quadratus, pronator teres
pronates the hand
flexor pollicis longus
flexes the thumb
extensor carpi radialis longus
extends and abducts the wrist
extensor digitorum
extends the wrist and digits
palmaris longus
tenses skin of the palm
flexor hallucis longus
flexes the great toe and inverts the foot
fibularis brevis, fibularis longus
plantar flex and evert the foot
gluteus medius, tensor fasciae latae
abduct thigh to "at ease" stance
gluteus maximus
used to extens the hip when climbing stairs
gastrocnemius, soleus
prime movers of plantar flexion
tibialis posterior
prime mover of inversion of the foot
tibialis anterior
prime mover of dorsiflexion of the foot
adductor group
adduct the thigh as when standing at attention
extensor digitorum longus
extends the toes
biceps femoris, semimembranosus, semitendinosus
entend thigh and flex knee
rectus femoris
extends knee and flexes thigh