The Circulatory System
The Digestive System
The Nervous System
The Respiratory System
The Immune & Integumentary Systems
100

 This organ acts like a pump to move blood through your body

What is Heart?

100

This is the long tube that moves food from your mouth down to your stomach. 

What is the Esophagus?


100

This is the main control center that processes information and tells the body how to react.

What is the Brain?

100

These are the two main organs where gas exchange takes place.

What are the Lungs?

100

This system (the skin) is the body's first line of defense against germs

What is the Integumentary system?

200

This system works with Circulatory to give the blood Oxygen to carry

What is the Respiratory system?

200

 Most nutrients are absorbed into the bloodstream through the walls of this organ.

What is the Small Intestine?

200

This is the term for the body's ability to maintain a stable internal environment

What is Homeostasis?

200

The Respiratory system provides oxygen to the blood so that cells can perform this energy-making process.

What is Cellular Respiration?

200

These are the "soldiers" of the Immune system that hunt down and destroy bacteria and viruses.

What are White Blood Cells?

300

These are the tubes (like pipes) that carry blood away from the heart

What are Arteries?

300

 This system works with the Digestive system to move food through the body using wave-like contractions.

What is the Muscular system?

300

 This system sends electrical signals to the Muscular system to make you shiver when you are cold.

What is the Nervous system?

300

This is the large muscle at the bottom of the chest that moves to pull air into the lungs.

What is the Diaphragm?

300

This system works with the Integumentary system to cool the body by sending more blood to the skin's surface.

What is the Circulatory system?

400

These are the smallest blood vessels where oxygen and nutrients actually enter the body's cells.


What are Capillaries?

400

Once the Digestive system breaks food into Glucose, this system picks it up and delivers it to every cell in your body.

What is the Circulatory system?

400

This type of feedback loop reverses a change to bring the body back to normal.

What is a Negative Feedback Loop?

400

This part of the Skeletal system forms a cage to protect the lungs from physical damage.

What are the Ribs?

400

These are Y-shaped proteins made by the immune system to "tag" and neutralize specific invaders.

What are Antibodies?

500

This system works with the Circulatory system to transport hormones to target organs.

 What is the Endocrine system?

500

This organ produces bile, which helps the digestive system break down fats

 What is the Liver?

500

 This is the specific cell type that carries electrical "messages" through the body.

What is a Neuron?


500

 When you exercise, your Nervous system tells this system to speed up because your blood has too much of this waste gas.

 What is Carbon Dioxide?

500

This is the body's overreaction to a harmless substance like pollen or peanuts.

What is an Allergic Reaction?

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