Endocrine System
Digestive System
Respiratory System
Nervous System
Circulatory System
100

A chemical release by glands of the Endocrine System.

What is a hormone?

100
These structures, also part of the skeletal system, crush that has entered the mouth.
What are the teeth?
100

These balloonlike organs 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

The chemical released to regulate blood sugar.

What is insulin?

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

Small grape-shaped sacs 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 gland that releases the hormone insulin.

What is the pancreas?

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
The chamber in the heart that pushes blood out of the heart and to the other parts of the body.
What is the ventricle?
400

The hormone that signals the liver to break down glycogen into glucose and releases into blood.

What is glucagon?

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

Makes up most of the blood.

What is water?

500

The system that carries hormones around the body to target cells.

What is the circulatory system?

500

The organ where most digestion occurs.

What is the small intestine?

500

A disease in the lungs in which the alveoli are destroyed by environmental factors such as smoke and chemicals.

What is emphysema?

500
A structure that permits a neuron to pass an electrical or chemical signal to another neuron.
What is a synapse?
500
These chambers bring blood into the heart from elsewhere in the body.
What are the atria (singular: Atrium)?
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