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occipitofrontalis raises the eyebrows
orbicularis oculi closes eyelids
orbicularis oris puckers lips
buccinator flattens cheeks
orcbicularis oris - buccinator kissing muscle
zygomaticus smiling
levator labii superioris sneering
depressor anguli oris frowning
mastication chewing
4 pairs of mastication muscles 2 temporalis 2 masseter
intrinsic tongue muscles change the shape
extrinsic tongue muscles moves the tongue
sternocleidomastoid lateral neck muscles/ prime mover
platysma sheetlike muscle, covers the anterolateral neck
erector spinae group of muscles on each side of the back
external intercostals elevate the ribs during inspiration
internal intercostals contract during forced expiration
diaphragm accomplishes quiet breathing
abdominal wall muscles muscles of abdominal wall flex and rotate vertebral column, hold in abdominal viscera
linea alba tendinous area of the abdominal wall, white connective tissue rather than muscles
rectus abdominious on each side of linea alba
trapezius rotates scapula
serratus anterior pulls scapula anteriorly
pectoralis major adducts and flexes the arm
latissimus dorsi medially rotates, adducts, extends the arm
deltoid attaches the humerus to the scapula and clavicle
triceps brachii extends forearm
biceps brachii flexes forearm, occupies anterior compartment of the arm
brachialis flexes forearm
retinaculum (bracelet) strong fibrous connective tissue that covers the flexor and extensor tendons and holds them in place around wrist.
flexor carpi flexes the wrist
extensor carpi extends the wrist
flexor digitorum flexes the finger
extensor digitorum extends the fingers
intrinsic hand muscles 19 hand muscles
interossi muscles located between metacarpals, are responsible for abduction and adduction of the figers
gluteus maximus buttocks
quadriceps femoris extends the leg. anterior thigh muscles
sartorius "tailors muscle", flexes the thigh
hamstring postier thigh muscles, flexes leg extends thigh
gastrocnemiua and solus for the calf muscle
calcaneal tendon (achilles tendon) flexes foot and toes
peroneus lateral muscle of leg
intrinsic foot 20 muscles located in foot, muscles flex extend, abduct, and adduct toes
contraction process of becoming smaller
muscle fibers cell composed of myofibers that contract when stimulated
skeletal muscle connected to the skeleton to form part of mechanical system
endomysium enshealths each individual myocyte
perimysium shealth of connective surrounding a bundle of muscle fibers
fasicle bundle of structures
smooth muscle contractile fibris are not highly ordered
cardiac muscle another term for myocardium
sarcolemma fine transparent tubular sheath
sarcomere structure unit of a myofiber in striated muscle
myosin fibrous protein that forms the contractile filaments of muscle
actin protein that forms together
sarcoplasmic reticulum specialized endoplasmic of cardiac muscle
motor unit made up of a motor neuron and the skeletal muscle
axon long threadlike part of a nerve cell
acetyliecholine compound that occurs throughout the nervous system
muscle fatigue muscle to generate force
isotonic length of muscle
isometric strength training in which joint angle and muscle length do not change
orgin where something begins
insertion action of inserting something
synergists a substance organ
antagonists substanaces that inhibits physiological action
fixators muscle that acts of a stabilizer
contractility shorten with force
excitablilty capacity to respond to a stimulus
extensibility ability to stretch
elasticity ablilty to recoil to original length after stretch
muscle fiber single cylinder cell containing several nuceli
fasciculi composed of single muscle called fibers
muscle twitch contraction of entire muscle in response to stimulus that causes the action potential in one or more muscle fibers
Created by: sadieplymale1221