Skeletal
muscular
Circulatory
Nervous
Digestive
100

These are the hard, white structures that make up your skeleton

What are bones?

100

This is the only type of muscle in your body that never gets tired and is found in your heart

What is cardiac muscle?

100

This organ acts as a powerful pump to move blood throughout your entire body

What is the heart?

100

This organ is the "control center" of your body

What is the brain?

100

This is the long, muscular tube that carries food from your mouth to your stomach

What is the esophagus?

200

This is the name of the bone that protects your brain

What is the skull/cranium?

200

These tough bands of tissue connect your muscles to your bones

What are tendons?

200

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

What are arteries?

200

These special cells send electrical signals like tiny wires throughout your body

What are neurons?

200

This organ produces bile and helps clean your blood of toxins

What is the liver?

300

This is the longest and strongest bone in your body and is found in the leg

What is the femur?

300

Muscles that allow you to move, like those in your arms or legs

What are skeletal muscles?

300

This is the liquid part of blood that carries nutrients and waste

What is plasma?

300

This thick bundle of nerves runs down your back and connects your brain to the rest of your body

What is the spinal cord?

300

Most of the nutrients from your food are absorbed into your blood in this long, coiled organ

What is the small intestine?

400

This flexible, rubbery tissue acts as a cushion between bones at your joints

What is cartilage?

400

This is the largest muscle in the human body, located in your buttocks

What is the gluteus maximus?

400

These tiny, thin-walled vessels allow oxygen and nutrients to pass into your body’s cells

What are capillaries?

400

These two parts make up your central nervous system 

What are the brain and spinal cord?

400

This organ’s main job is to soak up water from leftover food and turn it into solid waste

What is the large intestine?

500

These bones protect vital organs such as your heart and lungs

What are ribs?

500

The type of muscle that makes up your stomach and intestines

What is smooth muscle?

500

Blood vessels that carry deoxygenated blood back to the heart

What are veins?

500

This part of the brain, located at the back, helps you keep your balance and coordinate your movements

What is the cerebellum?

500

This organ contains acid to help break down the food you eat

What is the stomach?

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