Skeletal System
Digestive System
Muscular System
Nervous System
100
This part of the skeleton is composed of several bones and protects the brain.
What is the skull?
100

These structures, also part of the skeletal system, crush that has entered the mouth.

What are the teeth?

100

This kind of muscle tissue can be controlled by active thinking.

What is voluntary muscle?

100
Tiny cells which send signals to the brain. They are also known as nerve cells.
What are neurons?
200

The connection of one bone to another.

What is a joint?

200
Food travels down this long tube from the mouth to the stomach.
What is the esophagus?
200

This particular muscle cannot be controlled by active thinking. This muscle allows the heart to pump blood.

What is a cardiac muscle?

200
The central nervous system is composed of the brain as well as this long structure that extends down the back and is the connector between the brain and all other parts of the body.
What is the spinal cord?
300

The kind of tissue that connects two bones.

What is a ligament?

300
The millions of tiny finger-shaped structures that cover the inner surface of the small intestine and provide a large surface area through which digested food is absorbed.
What are the villi?
300

Muscles need this.

What is energy?

300
Bundles of fibers found throughout the body that sends electrical impulses to and from the brain to the other body structures.
What are nerves?
400

The internal, and spongy, portion of the bone that produces blood cells.

What is the marrow?

400
Double Jeopardy: This chemical aids in digestion by speeding up chemical reactions.
What is an enzyme?
400

A muscle is a lever and has a particular point that can pivot.

What is the fulcrum?

400
A long, slender projection of a nerve cell that typically conducts electrical impulses away from the cell's body.
What is an axon?
500

This soft tissue is found at the end of a bone. It acts as a cushion.

What is cartilage?

500

The process by which muscles contract and relax to allow food to move past them?

What is peristalsis?

500

This particular muscle is non-voluntary and can release bile acids to the intestines.

What is the liver?

500
A structure that permits a neuron to pass an electrical or chemical signal to another neuron.
What is a synapse?
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