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extensor digitorum longus
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What are the 7 functions of the muscular system
body movement, generation of body heat, maintnace of posture, heaart beat, constiction of organs, breating, communication
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What are the three types of muscles
skeletal, cardica, smooth
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what are the two actions of muscle
flexion extension
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what are the four characteristics of a muscle
constractability, Excitibility, extensibility, elastisity
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the ability of a muscle to shorten with force
contracability
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the capasity of the muscle to resond to stimulus
excitability
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muscle can be streched out after contraction ans be returned to the normal length
extensiability
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ability of a muscle to recoil to original resting length after being streched
elastisity
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What are the three parts to a muscke
origin, belly, insertion
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what is the difference between the origin and the incertion of the muscle
the insertion can move, while the origin cannot move
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What is the muscle cell called
muscle fiber
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what is the cytoplasm
sarcoplasm
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muscle cell membrane
sarcolemma
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energy
the ability to do work
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the movement of a force through a distance
work
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what are the three types of food for humans
protien, carbohydrates, lipids
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2 types: simple sugars and starch. 4 calories per 1 gram
carbohydrate
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animal tissue plants 4 calories per 1 gram
protien
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fat, animal, plant, 9 caloried per gram
lipid
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what is glucose turn into so our body's can use it as energy
ATP
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ATP stands for
Adenosune Triphosphate
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buring glucose is
oxidation
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a muscle is attached to a bone by
tendons
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connective tissue that surrounds the muscle
epimysium
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skeletal muscle is composed of many visible bundels called
muscle fasciculi
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each muscle faciculi is surrounded by losse connective tissue called
peromysium
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Each muscle fiber is surrounded by connective tissue called
endomysium
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thred-like fibers that extends from one end of the muscle to the other
myofibrils
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what are the two kinds of muscle proteins
myosin actine
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protein strands that look like two strands of beads twisted together
actine
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protein strands that looks like gulf clubs
myosin
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what are the lnog fibers that actin and myosin are agganged into called
myofilamints
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the basic structural and functional unit of the skeletal mucle
sarcomere
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one sarcomere extends from a visible disk to another.. what is that disk called
the z-disk
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what gives the myofibrioles their banded appearance
the arrangement of actin and myosin
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what is the lighter band next to the z disk
i-band
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next to the i disk and toward the enter
a-band
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in the center of the sarcomere is a second light zone. This is called the
h-zone
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m line is where
the very center of the of the sarcomere
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