Antagonistic Muscle Pairs

Question 1

How does muscles pull on bones to create movement?

Answer 1

When a muscle contracts, it’s a pulling force on the bone to which is attached, meaning they move together.

Question 2

How is movement created in muscles?

Answer 2

Brain sends a message to the nervous system which shortens or bulges the muscle.

Question 3

Agonist

Answer 3

The muscle that opposes the action of another. E.g. Biceps and triceps.

Question 4

Synergist

Answer 4

Perform or help perform the same set of joint motion as the agonists.

Question 5

Fixator

Answer 5

A muscle that acts as a “stabiliser” of one part of the body during movement of another part.

Question 6

Three types of muscle?

Answer 6

Involuntary, voluntary and cardiac muscles.

Question 7

Involuntary (smooth) muscles

Answer 7

Work the internal organs and are outside of our control.

Question 8

Voluntary (skeletal) muscles

Answer 8

Muscles that make the body move, they are attached to the skeleton.

Question 9

Cardiac muscles

Answer 9

Found in the walls of heart. They are self-regulating.

Question 10

Insertion

Answer 10

End of bone that moves.

Question 11

Origin

Answer 11

End of bone that doesn’t move.