muscular contractions

Question 1

what is a muscular contraction?

Answer 1

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

Question 2

what are the two types of muscular contraction?

Answer 2

isometric and isotonic

Question 3

does movement occur in isometric or isotonic muscle contractions?

Answer 3

isotonic

Question 4

describe isometric muscular contractions

Answer 4

the muscle generates tension but the length of the muscle does not change during contraction so there is no movement

Question 5

describe isotonic muscular contractions

Answer 5

during contraction, the muscle shortens in length, giving movement

Question 6

what are the two types of isotonic muscular contractions?

Answer 6

concentric and eccentric

Question 7

describe concentric contractions

Answer 7

the muscle shortens while producing movement, therefore causing joint movement

Question 8

describe eccentric contractions

Answer 8

muscle lengthens while producing tension and therefore controls joint movement

Question 9

when is eccentric contraction needed?

Answer 9

when you are working against gravity