Digestive System
Cardiovascular System
Blood

Respiratory System
Miscellaneous
100

Largest internal organ of the body

What is the liver?

100

The wall that separates the heart into a left and right side

What is the septum?

100

Liquid part of the blood

What is plasma?

100

The air sacs in the lungs

What are alveoli?

100

The nerve that controls the diaphragm

What is the phrenic nerve?

200

The parts of the small intestine

What are the duodenum, jejunum, and ileum?

200

Blood vessels that carry blood away from the heart

What are arteries?

200

Type of cells that transport oxygen

What are red blood cells?

200

The breathing muscle

What is the diaphragm?

200

The highest level of organization of the body

What is system?

300

The part of a tooth covered by enamel

What is the crown?

300

These prevent blood in the heart from backing up

What are valves?

300

The flow of blood between the heart and all parts of the body

What is systemic circulation?

300

A membrane lining the nasal cavity

What is a mucous membrane?

300

A tough, slippery membrane that encloses the heart

What is the pericardium?

400

The organ that makes bile

What is the liver?

400

The lower chambers of the heart

What are ventricles?

400

Type of blood cells that can destroy germs

What are white blood cells?

400

The exchange of oxygen, nutrients, and wastes between blood and cells through capillaries

What is diffusion?

400

Number of muscles in the human body

What is over 600?

500

What saliva breaks down starch into?

What are sugars?

500

The largest artery of the body

What is the aorta?

500

Cell fragments that clot the blood

What are platelets?

500

The left lung has this many lobes.

What is 2?

500

Blood vessels that carry blood away from the heart to the lungs 

What are pulmonary arteries?

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