Muscular System
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What are muscles? | An organ that contracts, becomes shorter, or expands, becomes longer, which allows the body to move.
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| How many muscles are int he human body? | More than 600 muscles.
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| What percent of body mass is muscle? | 35-40%.
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| What are the two groups of muscles? | Voluntary and involuntary.
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| What are voluntary muscles, and provide an example. | Muscles that you can control; arms, legs, hands, face.
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| What are involuntary muscles, and provide an example. | Muscles you can't control; muscles around the heart, intestines.
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| What are smooth muscles? | Involuntary muscles that contract slowly and move substances through the organs they surround; found in the walls of the stomach, intestine, uterus,...
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| What are cardiac muscles and what is their purpose? | Make up the walls of the heart; pump blood.
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| What are skeletal muscles? | Voluntary muscles that contract quickly and tire easily.
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| How are skeletal muscles attached to bones? | By tendons, which are thick bands that pull on the bones as the muscle contracts.
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| What do skeletal muscles look like under a microscope | Striated, or striped.
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| True of False; Skeletal muscles always push. | False.
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| How do skeletal muscles cause the body to move? | By working in pairs; one muscle contracts while the other muscle relaxes.
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| What is the result of the body creating thermal energy when muscles contract? | Produce heat and keep the body temperature constant.
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| What happens when a muscle contracts and uses chemical energy? | Glucose is used and muscles get tired and need to rest.
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Created by:
Sachi
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