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muscle actions
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muscle actions from Hole's human anatomy and physiology
Terms in this set (52)
orbicularis oculi
closes eye
frontalis
raises eyebrows
occipitalis
raises eyebrows
temporalis
elevates mandible
orbicularis oris
closes and protrudes lips
buccinator
compresses cheeks inward
zygomaticus
rasies corner of mouth
platysma
draws angle of mouth downward
masseter
elevates mandible
sternocleidomastoid
pulls head to one side, flexes neck or elevates sterum
trapezius
rotates scapula; various fibers raise or pull scapula medially, pull scapula downward
pectoralis major
flexes, adducts, and rotates arm medially
latissimus dorsi
extends, adducts, and rotates arm medially, or pulls the shoulder downward and back
deltoid
abducts, extends, and flexes arm
bicep brachii
flexes elbow and rotates hand laterally
tricep brachii
extends elbow
external oblique
tenses abdominal wall and compresses abdominal contents
internal oblique
tenses abdominal wall and compresses abdominal contents
transversus abdomninis
tenses abdominal wall and compresses abdominal contents
rectus abdominis
tenses abdominal wall and compresses abdominal contents; also flexes vertebral column
gluteus maximus
extends hip
gluteus medius
abducts and rotates thigh medially
sartorius
flexes knee and hip, abducts and rotates thigh laterally
semimembranosus
flexes knee, rotates leg medially and extends thigh
tibialis anterior
dorsiflexion and inversion of foot
gastrocnemius
plantar flexion of foot, flexes knee
soleus
plantar flexion of foot
rhomboideus major
retracts, elevates, and rotates scapula
serratus anterior
pulls scapula anteriorly and downward
infraspinatur
rotates arm laterally
teres major
extends adducts, and rotates arm medially
brachialis
flexes elbow
brachioradialis
flexes elbow
pronator teres
rotates forearm medially and pronates hand
flexor carpi radialis
flexes wrist and abducts hand
flexor carpi ulnaris
flexes wrist and adducts hand
flexor digitorum superficialis
flexes fingers and wrist
extensor carpi radialis longus
extends wrist and abducts hand
extensor carpi ulnaris
extens wrist and adducts hand
extensor digitorum
extends fingers
tensor fasciae latae
abducts, flexes, and rotates thigh medially
ilicaus
flexes thigh
psoas major
flexes thigh
adductor longus
adducts and flexes thigh
adductor magnus
adducts thigh, posterior portion extends and anterior portion flexes thigh
gracilis
adducts thigh and flexes knee
quadricep femoris
extends knee
rectus femoris
extends knee, flexes thigh
vastus lateralis
extends knee
vastus medialis
extends knee
vastus intermeadius
extends knee
internal intercostals
elevates ribs
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