Action Muscles Flashcards
Frontalis
raises eyebrows
occipitalis
tenses and retracts scalp
orbicularis oris
compresses and purses lips (kissing)
zygomaticus major
retracts and elevates corners of mouth
levator labii superioris
elevates upper lip
depressor labii inferioris
depresses lower lip
buccinator
compresses cheeks for whistling, blowing, and sucking
mentalis
elevates and protrudes lower lip (pouting)
platysma
depresses mandible
riosrius
draws corner of mouth to the side
orbicularis oculi
closes the eye
corrugator supercili
pulls brow inferiorly and anteriorly (frowning)
superior rectus
eye superiorly and medially
inferior rectus
eye inferiorly and medially
lateral rectus
eye laterally
medial rectus
eye medially
superior oblique
eye inferiorly and laterally
inferior oblique
eye superiorly and laterally
medial pterygoid
elevates and protracts mandible and moves it from side to side
lateral pterygoid
depresses mandible and moves it from side to side
hyoglossus
depresses and retracts tongue
splenius capitis
bilaterally: extend neck
unilaterally: laterally flex and rotate neck to same side as contracting muscle
quadratus lumborum
laterally flex trunk, raise hip
spinalis, longissimus, and iliocostalis groups
bilaterally: extend spine
unilaterally: lateral flexion of spine
levator ani
tenses and supports pelvic floor
coccygeus
tenses and supports pelvic floor
bulbospongiosus
helps expel urine, propel semen, assists erection
ischiocavernosus
maintains erection of penis and clitoris
external anal sphincter
closes anal opening
flexor carpi radialis
flexes and abducts wrist
flexor carpi ulnaris
flexes and adducts wrist
extensor carpi radialis longus
extends and abducts wrist
extensor carpi ulnaris
extends and adducts wrist
piriformis
abducts thigh at hip joint
illopsoas
flexion at hip