Muscles And Movement

Question 1

Define abduction:

Answer 1

Moving away from the midline of the body

Question 2

Define adduction:

Answer 2

Adding to the midline of the body e.g: swimmer bringing arms above the head before dive

Question 3

Define flexion:

Answer 3

Angle of joint decreasing

Question 4

Define extension:

Answer 4

Angle of joint increasing

Question 5

Define plantar flexion:

Answer 5

Pointing toes down

Question 6

Define dorsi flexion:

Answer 6

Pulling toes up

Question 7

Define rotation:

Answer 7

Turning around an axis/ fixed point

Question 8

Define circumduction:

Answer 8

Circular movement around the joint

Question 9

Define antagonist:

Answer 9

The muscle that relaxes in a antagonistic muscle pair to allow for movement.

Question 10

Define agonist:

Answer 10

The prime mover; the muscle that contracts.

Question 11

Describe how antagonistic pairs bring about movement:

Answer 11

One muscle of the pair contracts to move the body part ( the agonist) the other muscle in the pair then relaxes ( antagonist) to return the body part back to the original position, this is repeated to perform types of movement of flexion and extension.