Chapter 11

Question 1

Origin

Answer 1

The site of muscle’s attachment to the more stable bone

Question 2

Insertion

Answer 2

The site of a muscle’s attachment to the more moveable bone.

Question 3

Belly (Body)

Answer 3

The fleshy part of a muscle located between the origin and
insertion of a muscle.

Question 4

Leverage:

Answer 4

• A mechanical advantage. The force created to achieve movement

Question 5

Leverage Terms

Answer 5

Lever - A rigid structure that can move around a fixed point (called the
fulcrum).
Effort - The force which causes movement. (i.e. the muscle)
Load = Resistance
- The force which opposes movement

Question 6

Coordination of Muscle Groups:

Answer 6

Agonist = Prime Mover
- The muscle that contracts to produce the desired movement.
Antagonist - The muscle that stretches and yields to the agonist.
Synergist - The muscle(s) that prevent unwanted movement and aid in the
movement of the agonist.
Fixator - The muscle(s) that stabilize the origin of the agonist.

Question 7

Agonist

Answer 7

Prime Mover
- The muscle that contracts to produce the desired movement.

Question 8

Antagonist

Answer 8

The muscle that stretches and yields to the agonist.

Question 9

Synergist

Answer 9

The muscle(s) that prevent unwanted movement and aid in the
movement of the agonist.

Question 10

Fixator

Answer 10

The muscle(s) that stabilize the origin of the agonist.