Muscles (practicum) Flashcards
ACTION: zygomaticus
smiling
ACTION: sternocleidomastoid
neck flexion
ACTION: digastric
opens mouth
ACTION: rectus abdominis
flexion of spine
ACTION: temporalis
elevation, retraction, excursion of mandible
ACTION: masseter
elevation, protraction, retraction, excursion of mandible
ACTION: trapezius
stabilizes, elevates, rotates, retracts scapula, depresses angle of shoulder
ORIGIN: trapezius
external occipital protuberance, spinous processes of C7-T12
INSERTION: TRAPEZIUS
scapula and clavicle
ACTION: PECTORALIS MAJOR
flexes, adducts, medially rotates humerus
ORIGIN: pectoralis major
clavicle, sternum, costal cartilages
INSERTION: pectoralis major
lateral, anterior, proximal humerus
ACTION: latissimus dorsi
adducts, medially rotates, extends humerus
ORIGIN: latissimus dorsi
vertebrae T7-L5; ribs; iliac crest; thoracolumbar fascia
INSERTION: latissimus dorsi
anterior, proximal humerus
ACTION: deltoid
flexes, extends, medially and laterally rotates, abducts humerus
ACTION: supraspinatus
abduction of arm
ACTION: infraspinatus
lateral rotation of humerus
ACTION: teres minor
lateral rotation of humerus
ACTION: subscapularis
medial rotation of humerus
ACTION: brachialis
flexion of elbow
ACTION: biceps brachii
flexion of elbow, supination of forearm; slight shoulder flexion
ORIGIN: biceps brachii
glenoid cavity and coracoid process of scapula
INSERTION: biceps brachii
radial tuberosity
ACTION: triceips brachii
extends elbow; extends, adducts humerus
ORIGIN: triceps brachii
glenoid cavity, posterior humerus
INSERTION: triceps brachii
olecranon process
ACTION: flexor carpi radialis
flexes wrist, radial flexion
ACTION: flexor carpi ulnaris
flexes wrist, ulnar flexion
ACTION: flexor digitorum superficialis
flexes wrist, metacarpophalangeal and interphalangeal joints
ACTION: extensor carpi radialis longus and brevis
extends wrist, radial flexion
ACTION: extensor digitorum
extends wrist, metacarpophalangeal and interphalangeal joints
ACTION: extensor carpi ulnaris
extends wrist, ulnar flexion
ACTION: iliacus
flexes thigh at hip; flexes trunk at hip when thigh is fixed
ACTION: psoas major
flexes thigh at hip; flexes trunk at hip when thigh is fixed
ACTION: gluteus maximus
extends and abducts thigh
ORIGIN: gluteus maximus
posterior gluteal line of illium, posterior sacrum
INSERTION: gluteus maximus
gluteal tuberosity of femur
ACTION: gluteus medius and minimus
abduct and medially rotate thigh
ACTION: adductor magnus
adducts and medially rotates thigh, extends thigh at hip
ACTION: rectus femoris
extends knee, flexes thigh at hip
ORIGIN: rectus femoris
ilium
INSERTION: rectus femoris
patella, tibial tuberosity, lateral and medial condyles of tibia
ACTION: vastus lateralis
extends knee
ACTION: vastus medialis
extends knee
ACTION: vastus intermedius
extends knee
ACTION: sartorius
knee and hip flexion, abducts and laterally rotates thigh
ACTION: biceps femoris
flexes knee, extends hip; rotates knee
ORIGIN: biceps femoris
ischial tuberosity and linea aspera
INSERTION: biceps femoris
head of fibula
ACTION: semitendinosus
flexes knee, rotates knee
ACTION: semimembranosus
flexes knee, rotates knee
ACTION: extensor digitorum longus
extends toes, dorsiflexes foot
ACTION: extensor hallucis longus
extends great toe (hallux); dorsiflexes foot
ACTION: tibialis anterior
dorsiflexes and inverts foot
ORIGIN: tibialis anterior
lateral condyle of tibia
INSERTION: tibialis anterior
medial cuneiform, metatarsal I
ACTION: gastrocnemius
plantar flexes foot, flexes knee
ORIGIN: gastrocnemius
condyles and popliteal surface of femur
INSERTION: gastrocnemius
calcaneus
ACTION: soleus
plantar flexes foot
ACTION: flexor digitorum longus
flexes phalanges of digits II-V
ACTION: flexor hallucis longus
flexes phalanx of great digit
ACTION: tibialis posterior
inverts foot
ACTION: fibularis (peroneus) longus
maintains concavity of sole, everts and plantar flexes foot
