
What are the functions of the skeletal system?

Give 3 examples of joints.

What is the function of the muscular system?

Summarize how muscles pairs work.

Contrast voluntary and involuntary muscles.

Functions:
1. Provide shape and support
2. Enable movement
3. Protects organs
4. Produces blood cells
5. Stores minerals and other materials

Types of joints:
1. Immovable joints – bones are connected in a
2.
3.
4.
5.
way that allows little or no movement.
Hinge joint – allows forward or backward motion.
Ball-and-socket joint – allows the greatest range
of movement.
Gliding joint – allows one bone to slide over
another.
Pivot joint – allows one bone to rotate around
another.

Functions:
1. Allow for movement of body and organs.
Muscles MUST WORK IN PAIRS!!
See the video of muscles working in
pairs:
www.dnatube.com/video/2916/Movemen
t-of-limbs
1.
involuntary muscles

muscles that are not
under your conscious
control.
2.
voluntary muscles

muscles that are
under your conscious
control.
1.
involuntary muscles

Muscles that make up
your: heart, stomach,
intestines, diaphragm,
eyes, eyelids
2.
voluntary muscles

Skeletal muscles