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Muscle Functions
N/A
33
Anatomy
12th Grade
02/02/2012

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Cards

Term
Iliopsoas
Definition
strong hip flexor, deep in pelvis; composite of two muscles
Term
gluteus maximus
Definition
power extensor of the hip; forms most of buttock mass
Term
gastrocnemius/ soleus
Definition
prime mover of plantar flexion; composite of two muscles
Term
tibialis anterior
Definition
inverts and dorsiflexes the foot
Term
adductor group
Definition
the group that enables you to draw your legs to the midline of your body, as when standing attention
Term
hamstrings
Definition
muscle group that extends the thigh and flexes the knee
Term
quadriceps
Definition
muscle group that ends the knee
Term
gluteus medius
Definition
smaller hip muscle, commonly used as an injection site
Term
gracilis
Definition
thin superficial muscle of the medial thigh
Term
tensor fascia latae
Definition
muscle enclosed within fascia that blends into the iliotibial tract; synergist of the iliopsoas
Term
extensor digitorum longus
Definition
dorsiflexes and everts the foot; prime mover of toe extension
Term
peroneus longus
Definition
a superficial muscle of the lateral leg; plantar flexes and everts foot
Term
tibialus posterior
Definition
muscle deep to the soleus; prime mover of foot inversion; stabilizes the medial longitudinal arch of the foot and plantar flexes the ankle
Term
pectoralis major
Definition
flex and rotate humerus in medial direction
Term
deltoid
Definition
elevate arm laterally, abduct
Term
trapezius
Definition
hyperextend head, elevate shoulder
Term
sternocleidomastiod
Definition
rotate head laterally and flexes head
Term
serratus anterior
Definition
flex arm, adduct, pushing, "boxer's muscle"
Term
rectus abdominus
Definition
flex, hyperextend trunk, little rotation
Term
external oblique
Definition
rotate trunk, flex laterally
Term
tensor fasciae latae
Definition
abduct leg
Term
rectus femoris
Definition
flex whole leg, extends lower leg
Term
gracilis
Definition
abduct leg
Term
vastus medialis/ vastus lateralis
Definition
flex leg, extend lower leg, stabilizes knee
Term
tibialis anterior
Definition
dorsiflex, invert feet
Term
gastrocnemius
Definition
plantar flexion
Term
peroneus longus
Definition
dorsiflex, eversion of feet
Term
biceps brachii
Definition
flex arm, supernate
Term
triceps brachii
Definition
extend arm
Term
gluteus maximus
Definition
flex trunk, rotates leg, leg hyperextension
Term
infraspinatus
Definition
fixates scapuls
Term
latissimus dorsi
Definition
whole body extension and rotation
Term
biceps femoris
Definition
flex lower leg/knee, hyperextension of thigh
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