Immune System
Digestive System
Respiratory System
Nervous System
Circulatory System
100

This is the first line of defense for the immune system

What is the skin or mucus membranes?

100

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

What are the teeth?

100
These balloon like sacs that inflate and deflate, bringing air into and out of the body.
What are the lungs?
100
Tiny cells which send signals to the brain. They are also known as nerve cells.
What are neurons?
100
These disc shaped cells transport oxygen from the lungs to the other parts of the body.
What are red blood cells?
200

This cell type engulfs pathogens

What is a macrophage?

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

Small sacks in the lungs which allow oxygen and carbon dioxide to move between the lungs and blood stream.

What are aveoli?

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?
200
Double Jeopardy: These blood cells are a vital part of the body's immune system.
What are white blood cells?
300

The adaptive immune system is activated by this

What is an antigen?

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
This chemical is in the air we breathe and we need it to survive.
What is oxygen?
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?
300

These bring oxygenated blood away from the heart to the rest of the body

What is an artery?

400

This cell type is responsible for clotting blood

What is a platelet?

400

Double Jeopardy: This chemical aids in digestion by speeding up chemical reactions.

What is gastrin?

400
This chemical is exhaled by animals, but plants "breathe" it in and use it to produce oxygen.
What is carbon dioxide?
400
A long, slender projection of a nerve cell that typically conducts electrical impulses away from the cell's body.
What is an axon?
400

These work with alveoli to preform gas exchange

What are capillaries?

500

This cell type is responsible for killing parasites

What are Eosinophils?

500

This organ produces bile stored in the gall bladder

What is the liver?

500

This structure makes a seal on the bottom of the rib cage and aids in breathing

What is the diaphragm?

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

Part of the circulatory system and a vital part of the immune system that carries a clear fluid called lymph towards the heart.

What is the lymphatic system. 

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