Muscles Flashcards
frontalis
forehead, elevates eyebrows and wrinkles forehead
orbicularis oculi
round muscle around the eye, opens and closes the eye
temporalis
over temples, elevates the mandible
occipitalis
muscle on the back of skull, covers the occipital bone. Helps with lengthening neck
zygomatic major
from zygomatic bone down into the cheek
risorious
“smiling muscle” pulls your cheeks back. at corner of lip
orbicularis oris
purse the lips, round muscle around mouth
buccinator
presses cheeks against the molars, squeeze teeth. underneath risorious
masseter
elevates mandible, helps with chewing. from jaw up under the temporal bone
sternocleidomastoid
long muscle, behind the ear. Helps with turning/tilting your head
levator scapulae
elevates the scapula, tilts toward the glenoid cavity.
trapezius
moves scap up, down, in, out. btwn neck and shoulders
platysma
stretches face/neck skin. from jaw down to clavicle
digastric
raises mandible/hyoid for speaking and swallowing, under the chin
sternohyoid
depresses hyoid after swallowing, inside neck along the esophagus
deltoid
3 parts: ANT medially rotates the arm; MIDDLE abducts arm POST extends/laterally rotates the arm (outside of the shoulder)
pectoralis major
flexes, adducts, medially rotates arm (big chest muscle)
pectoralis minor
depresses and stabilizes scapula (from shoulder to 3rd rib, under pec maj.)
serratus anterior
rotates scap up, pulls it anterior (lower than pec maj. mixed in with obliques)
biceps brachii
supinates flexed forearm (anterior side of humerous)
external intercostals
elevates ribs (more lateral than medial/ inside of ribs)
internal intercostals
elevates ribs (more medial than lateral/ inside of ribs)
latissimus dorsi
extends, adducts, and rotates humerus. (big back muscle under trap/ from armpit to hip)
supraspinatus
helps deltoid abduct arm, helps cuff rotate arm (top of rotator cuff/ located between acromion and clavicle)
infraspinatus
laterally rotates arm at shoulder (middle of rotator cuff/ located on scapula)
teres minor
laterally rotates arm at shoulder (bottom of cuff/ located below infraspinatus towards armpit) …above teres major
teres major
extends arm and medially rotates shoulder (located below teres minor/ from bottom of scap to triceps)
triceps brachii
extend forearm (posterior side of humerus)
rhomboid major
retracts scap (located from spine to lower scap, below rhom. min.)
rhomboid minor
retracts scap (located from spine to middle scap, above rhom man)
linea alba
line btwn R and L sides of the abdominal cavity
rectus abdominis
flexes trunk, compresses abdominal viscera ( forms 8 pack)
external oblique
flexes and rotates trunk (outer most layer of obliques)
internal oblique
flexes and rotates trunk (deeper than external, same location)
transversus abdominis
flexes and compresses trunk, no rotation (deepest of all obliques)
brachioradialis
flexes forearm at elbow, part of posterior forearm (located on thumb side, big, down into wrist, from anterior view)
flexor carpi radialis
flexes hand at wrist and abducts (located in middle of forearm from anterior view)
palmaris longus
flexes hand at wrist and tightens palm (located in anterior view, has tendon running down into palm)
flexor carpi ulnaris
flexes hand at wrist and adducts (located on pinky side of forearm in both views)
extensor digitorum
extends medial 4 digits, extends hand at joint (located in posterior view, runs down the middle of the forearm and hooks to 4 fingers)
extensor carpi ulnaris
extends and adducts hand at wrist (located in posterior view, down middle of forearm and hooks to pinky side of wrist)
pronator teres
pronates forearm and elbow flexors (located in anterior view directly below biceps)
extensor carpi radialis longus
extends and abducts hand at wrist (located in posterior view, runs from elbow to thumb, very long)
brachialis
thumb side of elbow, next to biceps
gluteus medius
abducts and rotates the thigh at the hip (small, above the gluteus maximus)
tensor fasciae latae
abducts thigh, keeps knee extended (anterior look of IT band)
sartorius
flexes abducts and rotates hip (long skinny muscle that starts on outside of hip and runs to the inside of the knee)
gracilis
helps rotate knee medially (runs the length of the thigh from groin to knee)
adductor longus
adducts and rotates thigh at hip (groin inside of gracilis)
rectus femoris
steadies the hip (big quad muscle, runs from hip to patella)
vastus lateralis
extends leg t the knee (lateral side of rectus femoralis)
vastus medialis
extends leg at the knee (medial side of rectus femoral is)
gastrocnemius
calf
soleus
plantar flexes foot at ankle (medial side of tibia)
fibularis longus
plantar flexes and everts foot (lateral side of calf, easily knotted)
tibialis anterior
dorsi flexes the foot (big muscle lateral to tibia)
extensor digitorum longus
extends lateral four digits and dorsi flexes foot (long muscle along shin that leads into 4 toes)
extensor hallucis brevis
extends toes (located on big toe side of foot)
extensor digitorum brevis
extends toes (located on lateral side of foot)
vastus intermedius
extends leg at knee (below rectus femoralis)
adductor magnus
most powerful adductor, adducts thigh (from ischium to femur)
gluetus maximus
abducts and rotates thigh and hip (biggest butt muscle)
iliotibal tract
IT band - posterior view
