Skeletal Muscles Flashcards
vastus medialis
Extends leg at the knee; part of the quadriceps group
temporalis
Elevates mandible
gracilis
adducts femur/thigh
rectus femoris
Extends leg at the knee and flexes thigh at the hip; part of the quadriceps group
masseter
Elevates mandible
sternocleidomastoid
flexes neck; rotates head
rectus abdominis
Compresses abdominal cavity and flexes vertebral column
tibialis anterior
dorsiflexion
peroneus longus
Muscle that covers the outer side of the calf; inverts the foot and turns it outward.
sartorius
Flexes, abducts, and laterally rotates thigh at the hip; flexes knee
biceps brachii
Flexes and supinates forearm
adductor muscles
adduct thigh
orbicularis oris
closes and protrudes lips
external oblique
Compresses abdomen; laterally flexes and rotates vertebral column
transverse abdominis
compresses abdomen
zygomaticus
smiling muscle
frontalis
Draws back scalp, wrinkles forehead, raises eyebrows
tensor fascia lata
Muscle located on the lateral portion of the thigh; it has a large amount of fascia and is also known as the IT band; it abducts the thigh
deltoid
Abducts arm
vastus lateralis
Extends leg at the knee; part of the quadriceps group
pectoralis major
Adducts and medially rotates the arm; flexes and extends humerus
serratus anterior
Pulls scapula anteriorly and downward
soleus
Plantar flexion of ankle
occipitalis
pulls scalp posteriorly
trapezius
Muscle that allows you to shrug your shoulders or extend your head
gluteus medius
hip abduction
gluteus maximus
heaviest muscle in body, extends/straightens leg at hip during walking
biceps femoris
Flexes leg at the knee and extends thigh at the hip; belongs to the hamstring group
triceps brachii
extends arm at elbow
semimembranosus
Flexes leg at the knee and extends thigh at the hip; belongs to the hamstring group
gastrocnemeus
Flexes knee; plantar flexes the foot
semitendinosus
Flexes leg at the knee and extends thigh at the hip; belongs to the hamstring group
latissimus dorsi
Back muscle that causes shoulder extension, adduction, horizontal abduction and horizontal abduction