Immune System
Digestive System
Respiratory/Circulatory System
Nervous System
Endocrine System
100

This is the physical barrier that prevents pathogens from coming into the body.

What is the skin?

100

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

What are the teeth?

100

This is the main organ of the circulatory system.

What is the heart?

100

This is the scientific name for ONE nerve cell.

What are neurons?

100

These are chemical messages sent throughout the body by the endocrine system. 

What are hormones?

200

This the second level of defense in you immune system

What are white blood cells?

200

Food travels down this long tube from the mouth to the stomach.

What is the esophagus?

200
Humans breathe in this type of gas and is transported to the rest of the body by the circulatory system.

What is oxygen?

200

These are the parts of the nervous system. 

What is the brain, spinal cord, and nerves?

200

Double Jeopardy: This gland produces insulin to regulate/control blood sugar levels in your body. 

What is the pancreas?

300
This is another scientific term for "germ".

What is a pathogen?

300

This is where most of the nutrients from your food is absorbed into the bloodstream to be transported through the body via the circulatory system. 

What is the small intestines?

300

This type of blood vessel takes oxygenated blood away from the heart.

What is an artery?

300

Unlike the endocrine system, the nervous system sends these types of messages. 

What is electrical?

300

This is the general name for the organs that produce hormones in your endocrine system.

What are glands?

400

These proteins are produced by white blood cells to identify pathogens that might be in the body. 

What are antibodies?

400

Double Jeopardy: This organ has acid strong enough to melt your other organs.

What is the stomach?

400

This gas is exhaled by animals, but plants "breathe" it in and use it to produce oxygen.

What is carbon dioxide?

400

Unlike the endocrine system, the nervous system sends out short and ________ messages to and from your brain. 

What is quick/fast?

400

Unlike the nervous system, the endocrine system sends these types of messages to different parts of the body. 

What is chemical?

500

These molecules cover the pathogen.

What are antigens?

500

This part of the respiratory system is sometimes confused with the esophagus. 

What is the trachea?

500

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

What are aveoli?

500

This is anything that triggers a behavioral or physical change in your body. 

What is a stimulus?

500

This chemical makes human blood red. 

What is iron?

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