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.

Question 12

What happens when the gastrocnemius contract?

Answer 12

Planter flexion

Question 13

What happens when the tibialis anterior contracts?

Answer 13

Dorsiflexion

Question 14

What is the main muscle on the back?

Answer 14

Latissimus dorsi