This protects your brain from impacts?
What is your cranium (or skull).

What is the mandible.
This system keeps all other systems working by communicating through electric nerve impulses.
What is the nervous system.
The largest organ in your body.
What is the skin.
What are red blood cells.
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What is the scapula.
This biological gender has more muscle mass.
What is- male
This is a wave of electrical activity transmitted between neurons.
What is a nerve impulse.
This is the top layer of the integumentary system.
What is the epidermis.
What is a ligament.

What is the clavicle.
Muscle cells are made of two protein filaments called...
What are Actin and Myosin
This part of the system consists of your brain and spinal cord.
What is the central nervous system.
These help hair on your skin stand up.
List the 5 types of joints.
1. Ball and socket
2. Hinge
3. Glide
4. Fixed
5. Pivot
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What is the femur.
What are voluntary muscles.
This is the number of brain cells we are born with and grow up with.
What is 100 billion.
This layer of your integumentary system helps keep you warm. You must list the full name. :)
What is the subcutaneous fat layer.
A baby is born with this many more bones than adults have.
Baby = 300
Adult= 206
Answer = 94
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What is the fibula.
When you open your arm so that it is straight, the triceps muscle is performing this type of movement.
What is a contraction.
DAILY DOUBLE!!!!
These thin filaments carry information from other neurons to the soma. 
What are dendrites
This substance is produced in the dermis of your skin in order to help cool you off when hot.
What is sweat.