The Musculoskeletal System
The Respiratory
System
The Digestive System
The Circulatory System
The Nervous System
100

This type of muscle is attached to bones and helps you move.
 

What is skeletal muscle?

100

This organ helps you breathe by taking in oxygen and releasing carbon dioxide.  

What are the lungs?

100

The organ where food is first broken down by chewing and saliva.  

What is the mouth?

100

This organ pumps blood throughout the body.  

What is the heart?

100

This organ controls all body functions.  

What is the brain?

200

The human body has _____ of these.  

What is 206?

200

This muscle at the bottom of the ribcage helps you inhale and exhale.  

What is the diaphragm?

200

This long tube moves food from the mouth to the stomach.  

What is the esophagus?

200

These blood vessels carry oxygen-rich blood away from the heart.  

What are arteries?

200

This long bundle of nerves runs down your back and sends messages.  

What is the spinal cord?

300

This is the longest bone in the human body.  

What is the femur?

300

These tiny air sacs in the lungs help oxygen move into the blood.  

What are alveoli?

300

This organ produces acid to help break down food. 

What is the stomach?

300

These tiny blood vessels allow oxygen and nutrients to pass into cells.  

What are capillaries?

300

This part of the brain controls movement, balance, and coordination.  

What is the cerebellum?

400

This type of muscle is found in the heart and never gets tired.
 

What is cardiac muscle?

400

The tube that carries air from your nose and mouth to your lungs.  

What is the trachea?

400

This organ removes water from waste before it leaves the body.  

What is the large intestine?

400

This is the only artery in the human body that carries oxygen-poor blood.
 

What is the pulmonary artery?

400

This largest part of the brain controls thinking, memory, and voluntary movements.
 

What is the cerebrum?

500

These muscles work without you thinking about them, like those in your stomach and intestines.

What are smooth muscles?

500

This condition makes it hard to breathe because the airways become narrow.  

What is asthma?

500

Most digestion happens in this part of the digestive system.  

What is the small intestine?

500

The name of the part of the heart that pumps oxygenated blood to the body.  

What is the left ventricle?

500

These nerves send messages to the brain to let you know what is happening in the environment.

What are sensory nerves?