BIOLOGY: muscle system

Created by aglauser 

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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

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