The functions of the muscular systemare to:

1. Provide movement

2. Maintain postureand

Muscles can be divided in two major groups:

and

Are muscles a person can control.

An example of a voluntary muscle are the muscles in your legs that help you walk.

Muscles in your stomach are involuntarybecause you do not control your stomach’s churning action.

Are muscles that function without

a person’s control.

Your body has 3 types of Muscle:

1. Smooth Muscle

2. Skeletal Muscle

3. Cardiac Muscle

Smooth MuscleIs an involuntary musclethat is found in manyinternal organs.

For example in the stomach.

Skeletal MuscleSkeletal MuscleIs the muscle that is attached to bone.

It is a voluntary muscle.

Muscles in your:Neck, legs, arms

Cardiac Muscle

Is muscle that is only found in the heart.

Are tough tissue fibersthat connect muscle to bones.

Antagonist MusclesAntagonist Muscles

Paired muscles that work Paired muscles that work together to allow movement in together to allow movement in the opposing directionsthe opposing directions

E.G. – biceps and tricepsE.G. – biceps and triceps

- quadriceps and - quadriceps and hamstrings hamstrings