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

Churns and mixes food with acids.

What is the stomach?

100

The number of chambers in the human heart.

What is four?

100

The name for a nerve cell.

What is a neuron?

100

The name for the windpipe.

What is the trachea?

100

The organs that filter the blood.

What are the kidneys?

200

A tube from the mouth to the stomach.

What is the esophagus?

200

The heart's upper chambers.

What are the atria?

200

The three major organs of the nervous system.

What are the brain, spinal cord and nerves?

200

The two main organs of breathing.

What are the lungs?

200

The hormone produced by the pancreas.

What is insulin?

300

The gastric juice secreted by the mouth.

What is saliva?

300

The heart's lower chambers.

What are the ventricles?

300

A type of nerve that orders movement.

What is s motor nerve?

300

The two gases exchanged while breathing.

What are CO2 and O2?

300

the two glands that give an ' energy boost' during emergencies.

What are the adrenal glands?

400

The five major organs of this system.

What are the mouth, esophagus, stomach, small and large intestines?

400

The three types of blood cells.

What are red, white and platelets?

400

The three parts of the brain.

What are the cerebrum, cerebellum and medulla?

400

The name of the air sacs in the lungs.

What are the alveoli?

400

The organ that holds and stores urine.

What is the bladder?

500

the finger-like tubes in the small intestines.

What are the villi?

500

The clear fluid blood cells float in.

What is plasma?

500

The difference between nerve cells and other kinds of cells.

What is "they cannot repair themselves when damaged?"

500

The flap of skin over the trachea that keeps out food.

What is the epiglottis?

500

The organs that produce estrogen and egg cells.

What are the ovaries?