Nervous System
Digestive System
Respiratory System
Circulatory System
Musculoskeletal System
100

It's the "most" important organ in the human body. It's in charge everything you do. 

Brain

100

The longest part of your digestive system, in total it stretches ~6m in length. 

What is the small intestine?
100

This muscle is involuntary, meaning that it helps automatically without conscious thought. It is the muscle that facilitates breathing. 

What is the diaphragm?

100
It's the organ found on the left side of our bodies between our lungs. This organ is in charge of pumping blood to all the other parts of our bodies. 

What is the heart?

100

It's in charge of moving your bones, without it you'd be unable to move.

What are muscles?

200

This subsection of the nervous system contains the brain and the spinal cord. 

Central Nervous System 

200

This organ is slightly larger than its smaller neighbour. It's job is to remove water from food waste. 

What is the large intestine?

200

This organ is found beneath your rib cage and fills with air when you breath in. 

What are lungs?

200

This kind of blood cell is in charge of bringing oxygen to all of the cells. 

What are red blood cells?

200

This part of our bodies connect muscle to bone and aids in movement.

What is a tendon?

300

This subsection of the nervous system contains only the nerves.

Peripheral Nervous System 

300

Its the tube like part of your body that connects your mouth to your stomach.

What is your esophagus? 

300

Its the part of your body that connects your trachea to your lungs. Hint: It starts with the letter b.

What are the bronchiole tubes (bronchi)?

300

It's the component in blood that helps your body fight infection. They are the colour of fresh snow.

What are white blood cells?

300

This part of your body connects one bone to another bone. It's a common injury for athletes to rip/tear/strain these when playing. 

What are ligaments?

400

Electrical signals travel from your sensory receptors to your nerves, then through this body part before it reaches your brain. 

What is your spinal cord?

400

This balloon like organ stretches as you eat, when you are full signals are sent to your brain telling you to stop eating.

What is the stomach?

400

It's the part of your body that connects your mouth to your lungs.

What is your trachea?

400

This part of blood is the liquid that all the blood cells "float" in. 

What is plasma?

400

This material covers the end of your bones at joints and acts as a cushion between your bones. It reduces friction between your bones but can also be found in your nose. 

What is cartillage?

500

Nerves are made up of these specialized cells.

What are neurons?

500

This kind of digestion involves your teeth pulverizing and grinding food down.

What is mechanical digestion?

500
Oxygen travels from the lungs to the blood stream through the process. Carbon dioxide travels from the blood back into the lungs through the same process. 

What is diffusion?

500

This part of of circulatory system is the general name for the "tubes" that move blood throughout the body.

What are blood vessels?

500

It's the number of bones found in the average adult human. 

What is 206?

M
e
n
u