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75 cards

bio 105

the smiling muscle zygomaticus
neck muscle sternocleidomastoid
raises the eyebrows occipitofrontails
closes the eyelids orbicularis oculi
puckers the lips orbicularris oris
frowning muscle depressor anguli oris
intrinsic tongue muscles changes the shape of the tongue
extrinsic tongue muscles move the tongue
muscle cells muscle fibers
buttockes gluteus maximus
chest muscles pectoral muscles
back muscles latissimus dorsal
ability for the muscle to contract contractillty
ability for a muscles to recoil back to its original length elasticity
ability for the muscles to extend extendibillty
flattens the checks buccinator
flexes the wrist flexor carpi
extensor carpi extends the wrist
flexor digitorum flexes the fingers
extensor digitorum extends the fingers
quadriceps femoris extends the leg
sartorius flexes the legs
pectoralis major adducts and flexes the arm
latissimus dorsi aducts rotates and extends the arm
deltiod attaches the humerus to the clavicle
triceps brachii extends the forearm
biceps brachii flexes the forearm
brachialis flexes the forearm
brachioradialis flexes and supinates the forearm
hamstring muscles posterior thigh muscles
gastrocnemius and soleus formthe calf muscles
mastication chewing
levator labii superioris sneering
contracttility ability for skeleton muscles to shorten with force
fascia connective tissue located outside the epimysium
the cytoplasm of each fiber myofibrils
excitability ability of skeletal muscle to respond with stimulus
elasticity ability to recoil to their original resting length after they have been stretched
fascia a connective tissue located outside the epimysium sheath
perimysium fasciculi surrounded by loose connective tissue
each muscle fiber is a single cylindrial cell containing many nuclei
endomysium each fiber surrounded by a muscle tissue sheath
myofibrils cytoplasm of each fiber is filled with
sarcomeres actin and m,yosin myofilaments form highly ordered units
banded the arrangements of actin and myolfiaments give this look
resting membrane potential charge difference across membrane
action potential brief reversal back of a charge
motor neurons nerve cells that carry action potentials to skeletal muscle fibers
muscle twitch contraction in muscle that causes action potential
threshold a muscle fiber that will not respond to stimulus until reached a certain level
all-or-none response the phenomenon that only responds when reached to a certain level
lag phase time between a motor neuron and the beginning of contraction
tetany when the muscle remains contracted
relaxation phase relaxation time for muscles
contraction phase time of contraction
recruitment increase number of motor units being activated
ATP used for muscle energy
where is ATP made? mitchondria
creatine phosphate high energy molecules
anaerobic respiration without oxygen
aerobic respiration with oxygen
muscle tone constant tension in contracted muscles
origin most stationary end of a muscle
2 kinds of major proteins actin myofilaments and myosin myofilaments
mastification 2 pairs of pterygoids
mastification 2 pairs of temporalisis
mastification 2 pairs of masseter
trapezelus rotates scapula
deltoid attatches humerus to scapula and clavicle
what does ATP degenerate? ADP
musculoskeletal system also known as locomoter system
what does the musculoskeletal system do? provides form, support, stability, strength, and movement for body
tendons what connects the skeletal system to the muscular system?
Created by: zane porter