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31 terms

BIOLOGY: muscle system

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skeletal muscle tissue
what the muscular system is made up of
change
the muscular system is the only system in the body that you can ______
flexibility
how much your muscles allow you to move
movement, heat generation, and shape
the 3 functions of the muscular system
movement
contracting and pulling
80, 20
___% of temperature is generated by skeletal muscles; only ____% is used for contractions
long, skinny
what is the shape of skeletal muscle cells?
over 600
how many muscles are in the human body?
organs
your muscles are _______ in the muscular system
striated
striped
proteins
stripes correspond to _________ inside of the cell
voluntary
are skeletal muscles voluntary or involuntary?
divide
skeletal muscles do not _______
multinucleate
skeletal muscles are ______________, meaning they have many nucleus'
tendon
conects muscle to bone; continuous
orgin
non movable end that muscles attach to (every muscle has one)
insertion
movable end that all mucles attach to; moves when the muscle contracts; all that muscles do is shorten and pull on this
belly
where most of the tissue of the muscle is found (usually fatty part)
feet, hands
you have no muscles in your ______ and _______
conective tissue cover
what is all around every cell in muscles, every group of cells, and the whole muscle. all of them join together to make the tendon, where they also voer the bone
proteins
each muscle cell is made up of _________, which are arranged in a regular, striated pattern
sarcomere
means "soft tissue" and "repeating unit"; it is a pattern, what makes the striations; the lines that you see and the part of the muscle that contracts. consists of actin, myosine, and z lines
actin
tiny thin proteins in the sarcomere that allow light to shine through them
myosin
thick heavy proteins in the sarcomere that light cannot pass through
protein
z lines are made of ___________
neuromuscular junction
where nerves and muscles meet
ACh (acetylcholine)
the chemical in the sliding filament theory that the nerve spits at muscular cells across the neuromuscular junction which causes a change in the muscle cell, creating a current
calcium, actin active site
in the sliding filament theory, the current in the muscle cell causes the endoplasmic reticulum to throw up ________ all over the cell which them uncovers the ___________________
myosin
when the actin active site is uncovered in the sliding filament theory, the __________- grabs the z lines and pulls it behind it, which is the muscle contracting
ATP, cramps
the muscle contracting uses up 1 _____, and befor the myosine can let go, it needs another one or else you get _________
atrophy
muscle wasting; when you stop exercising and your muscles go away