Skeletal
Muscular
Nervous
Benefits of Physical Fitness
Types of Physical Activities
100

Place where two or more bones meet.

Joint

100

Involuntary muscle that causes movement.

Smooth Muscle

100

Basic unit of the nervous system.

Neuron

100

This system includes your heart and blood vessels that receives the most benefits from regular physical activity. 

Cardiovascular System

100

Ongoing physical activity that raises your breathing rate and heart rate.

Aerobic Exercise

200

Fills the spaces between bones.

Marrow

200

Involuntary muscle found only in the heart.

Cardiac Muscle

200

Makes up 85% of the brains weight.

Cerebrum

200

Regular physical activity increases your basal metabolic rate-the amount of energy your body uses when you are at rest.

Weight Maintenance

200

Intense physical activity that lasts for a few seconds to a few minutes.

Anaerobic Exercise

300

By young adulthood most of this cartilage is replaced by bone.

Ossification

300

Muscles that you control to do activities.

Skeletal Muscles

300

Coordinates your bodies movements and helps with your balance.

Cerebellum

300

Your physical activities should include some weight-bearing exercises such as jumping rope or walking.  These activities make your bones stronger and denser.

Bone Strength

300

An exercise in which muscles contract  but very little body movement takes place.

Isometric Exercise

400

An overstretched or torn ligament.

Sprain

400

A thick strand of tissue that attaches to the bone.

Tendon

400

Consist of three structures: the midbrain, pons, and medulla.

Brain Stem

400

Good balance and coordination can also reduce your risk of injury while performing chores such as climbing ladders or carrying packages down stairs.

Balance and Coordination

400

Involves contracting and relaxing your muscles through the full range of a joint's motion.

Isotonic Exercise

500

A condition in which the bones become weak and break easily.

Osteoporosis

500

An overworked or overused muscle that is very painful.

Strain

500

These actions include such things as your breathing rate and digestion.

Autonomic Nervous System

500

 Continuous exercise releases endorphins. Chemicals that block pain messages from reaching your brain cells.  Responsible for the feelings of satisfaction and pleasure.

Psychological 

500

Muscles contract at a constant rate. Typically involves a machine providing resistance like in a physical therapist office.

Isokinetic Exercise

M
e
n
u