types of contractions Flashcards

1
Q

what is a muscular contraction?

A

when a stimulus from the brain is sent to the muscle and tension is produced

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2
Q

what are the 2 types of muscular contractions?

A

isotonic and isometric

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3
Q

does movement occur in isotonic or isometric muscular contractions?

A

isotonic

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4
Q

describe isometric muscular contractions.

A

no movement is produced from contraction

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5
Q

why is no movement produced in isometric muscular contractions?

A

muscle generates tension but the length of the muscle doesn’t change during contraction so there is no movement

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6
Q

describe isotonic muscular contractions.

A

movement occurs from contraction

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7
Q

how is movement produced in isotonic muscular contractions?

A

during contraction, the muscle shortens in length, giving movement

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8
Q

what are the two ways in which isotonic contraction can occur?

A

concentric contraction and eccentric contraction

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9
Q

describe concentric contraction.

A

muscle shortens while producing movement, therefore causing joint movement

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10
Q

describe eccentric contraction.

A

muscle lengthens while producing tension and therefore controls joint movement

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11
Q

what type of isotonic contraction is needed when you are working against gravity?

A

eccentric

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