The Circulatory System
The Respiratory System
The Digestive System
The Nervous System
Major Organs of Each System
100

The upper chamber of the heart.

What is an atrium?

100
The function of the Respiratory System. 

What is supplying the body with oxygen and removing carbon dioxide?

100

This, as well as chewing, break down food once it enters your mouth. 

What is saliva?

100

This is made up of millions of nerves and receives and sends messages to and from parts of the body. 

What is the Spinal Cord?

100

This organ pumps blood all throughout the body. 

What is the heart?

200

Vessels that transport blood away from the heart.

What are arteries?

200

A large breathing muscle that seperates the heart and lungs from the abdominal cavity. 

What is the diaphragm?

200

The function of the Digestive System.

What is breaking down food into particles the body uses for nutrition?

200
These are what nerves are made of. 

What are neurons?

200
These organs receive oxygen into the body and send out carbon dioxide. 

What are the lungs?

300
The function of the Circulatory System.

What is circulating oxygen and nutrients throughout the body?

300

The main components of the Respiratory System. 

What are the lungs?

300

The undigested food travels down this. 

What is the large intestine?

300

These nerves are located in the sensory organs (the eyes, ears, nose, and skin). 

What are sensory nerves?

300

These organs create enzymes to digest food further, and soak up water so that the body can pass unneeded material.   

What are the small intestine and the large intestine?

400

The heart is split into a right and left side. 

What is the septum?

400

These tubes lead into the lungs. 

What are the bronchial tubes?

400

This churns food and creates acid to help digest food. 

What is the stomach?

400

These carry instructions from the brain to muscles in your body.  

What are motor nerves?

400

This organ has three major parts and receives and sends messages to parts of the body telling them what to do. 

What is the brain?

500

These carry the oxygen-rich blood to the left atrium of the heart, starting the cycle over again. 

What are pulmonary veins?

500

Air goes down this after it has entered the body.

What is the trachea?

500

enzymes and bile in the small intestine are made and stored in these organs. 

What are the pancreas, the liver, and the gall bladder?

500

The function of the Nervous System.

What is receiving information from the environment, understanding what that information means, and creating a response to it? 

500

These are not organs, but they send messages to parts of the body by releasing a chemical. 

What are nerves?

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