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Ch.6 Muscle

QuestionAnswer
Muscle Cells Muscle Fibers
ability for the muscle to shorten with force Contractility
capability of skeletal muscle to respond to the stimulus excitability
ability to be stretched extensibility
ability to recoil elasticity
thin miyofilaments actin miyofilaments
thick miyofilaments myosin miyofilaments
connective tissue located outside the perymysium facia
loose connective tissue surrounding the muscle fasciculi perimysium
connective tissue sheath surrounding the muscle fibers endomysium
nerve cells that carry action potentials to skeletal muscle fibers motor neurons
each brand that connects to the muscle neuromusclular junction
a single motor neuron motor unit
buttocks gluteus maximus
chest muscle pectoral muscle
Anterior thigh muscle Quadriceps femoris
Posterior thigh muscle Hamstrings
Back muscle Latissimus Dorsi
sliding of actin myofilaments sliding filament mechanism
contraction of an entire muscle muscle twitch
a level that a muscle will not respond threshold
a time between application of a stimulus to a motor neuron lag phase
anaerobic respiration without oxygen
aerobic respiration with oxygen
muscle tone constant tension in the muscles
Fast twitch fibers contract and fatigue quickly
slow twitch fibers contract mores slowly and fatique less
origin most stationary end of the muscle
insertion end of muscle with most movement
belly portion of muscle between the origin and insertion
synergists muscles that work together
antagonists muscles that work in opposition of each other
occipitofrontalis raises the evebrows
orbicularis oculi closes the eyelids
orbicularis oris puckers the lips
buccinator flattens the cheeks
zygomaticus smiling muscle
levator labii superioris sneering
depressor anguli oris frowning
mastication chewing
sternocleidomastoid lateral neck muscle and prime mover
thoracic muscles muscles that move the thorax
trapezius rotates scapula
serratus anterior pulls scapula anteriorly
pectoris major adducts and flexes the arm
deltoid attaches the humerus to the scapula
triceps brachii extends the forearm
biceps brachii flexes the forearm
brachialis flexes forearm
flexor carpi flexes the wrist
extensor carpi extends the wrist
flexor digitorum extends the fingers
quadriceps femoris extends the leg
recruitment the increase in motor units
fibers single muscle cells
actin myofilaments thin myofilaments
myosin myofilaments thick myofilaments
sarcomeres actin and myofilaments form highly units
action potential the brief reversal back of the charge
resting membrane potential the charge distance arcross the membrane
synapse each brand that connects the muscle fibers
presynaptic the enlarge nerve terminal
synaptic left the space between the pre synaptic terminal and muscle fiber
synaptic vescicles each presynaptic terminal
acetylcholine a secrete neurotransmitter
dorsiflexion up and down movements
inversion special movements of the foot
supination turning backward
opposition in the palm of the hand
parallel the length of the fascicles
fusiform modification of the parallel arrangment
pennate short fascicles attach obliquely to a central tendon
endurance type of exercise
lactic acid acid generated during glycosis
isotonic contractions tension
creatine phosphate high energy molecule
anaerobic glycosis the intial steps of glucose
cross bridges myosin heads
sarcoplasmic reticulum specialized endoplasmic reticulum
neuromuscular junctions with sarcolemna
striated muscle skeletal muscle
tendons epimysium blend
aponeuroses sheetlike
voluntary muscle only muscle type subject to conscious control
Created by: austinbowen
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