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23 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What does the muscular system do?
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It allows animals to move internally and externally
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What do you use your muscles for?
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Name the three different types of muscles the muscular system in vertebrates consist of?
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1. Cardiac
2. Skeletal 3. Smooth |
Heart is a muscle
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What are cardiac muscles?
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Striated muscles that makes up the heart.
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Describe them.
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What are striated muscles?
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Muscle tissue that is marked by dark and light bands.
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Describe them.
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Why is the cardiac muscle unique?
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It is the only type of muscle consisting of branching fibers and it's only found in the heart.
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How is it different?
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What are skeletal muscles?
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Voluntary muscles attached to the frame of the skeletal system
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Describe them.
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What are smooth muscles?
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Involuntary muscle
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Describe them.
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What do smooth muscles do?
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Enables the internal organs to move.
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Describe them.
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What do skeletal muscles do?
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Make the body move
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Describe them.
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Movement of all muscles is controlled through the __________ system.
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Nervous
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DUH!
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How many muscles are in the human body?
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About 700
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Ballpark it!
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Muscle is a contractile form of _________.
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Tissue
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Diaphragm
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What is used to move parts of the body and move substances within the body.
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Muscle contraction
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What do the musceles do?
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Muscle cells are composed of two proteins called ______ and _______
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1. Myosin
2. Actin |
Sounds like verbs.
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In skeletal muscle, contraction is stimulated by electrical impulses transmitted by the the _______ and______________ .
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1. Motor nerves
2. Motorneurons |
What transmitt electrical impulses that has to do with the topic
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What muscle is the strongest?
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Masseter
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The tongue may is the strongest muscle at what point in your life.
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Birth
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The heart is the muscle that performs the largest quantity of ________ ____ in the course of a lifetime
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Physical work
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How many skeletal muscles are in your body?
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Over 600
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What is the efficiency percentage?
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14 - 24%
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What role in the muscular system does actin and myosin play?
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Contraction and relaxation
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What muscle excerts most force?
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Quadriceps
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What shape are most muscle cells?
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Rectangle
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