types of 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 2 types of muscular contractions?

Answer 2

isotonic and isometric

Question 3

does movement occur in isotonic or isometric muscular contractions?

Answer 3

isotonic

Question 4

describe isometric muscular contractions.

Answer 4

no movement is produced from contraction

Question 5

why is no movement produced in isometric muscular contractions?

Answer 5

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

Question 6

describe isotonic muscular contractions.

Answer 6

movement occurs from contraction

Question 7

how is movement produced in isotonic muscular contractions?

Answer 7

during contraction, the muscle shortens in length, giving movement

Question 8

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

Answer 8

concentric contraction and eccentric contraction

Question 9

describe concentric contraction.

Answer 9

muscle shortens while producing movement, therefore causing joint movement

Question 10

describe eccentric contraction.

Answer 10

muscle lengthens while producing tension and therefore controls joint movement

Question 11

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

Answer 11

eccentric