Nervous System
Respiratory System
Skeletal System
Circulatory System
Digestive system
100

I am the control center of your whole body, thinking, feeling, and remembering everything. What am I?

Brain

100

I am the main dome-shaped muscle under your lungs that moves down when you inhale. What am I?

Diaphragm

100

I am a tough, hard helmet that protects your brain from bumps and hits. What am I?

skull

100

I am a muscular pump about the size of your fist that works non-stop every second of your life. What am I?

heart

100

I am a stretchy muscle bag that uses acid and churning motions to turn your food into liquid paste. What am I?

Stomach

200

: I am a long highway of nerves running down your back, protected by bones. What am I?

Spinal court

200

I am the waste gas your body exhales out through your lungs. What am I?

Carbon Dioxide

200

I am the longest and strongest bone in your entire body, located in your thigh. What am I?

Femur

200

I carry oxygen-poor blood back toward the heart and usually have valves inside me. What am I?

vein

 

200

I am very long and folded up; my villi absorb most nutrients from your digested food into the bloodstream. What am I?

Small Intestine

300

I am the basic cell unit of the nervous system, sending electrical messages everywhere. What am I?

nerve cell

300

We are the two main spongy organs in your chest that expand when you breathe in. What are we?

Lungs

300

I am the place where two or more bones meet so you can bend, twist, or hinge. What am I?

Joint

300

I am a thick-walled blood vessel that carries oxygen-rich blood away from the heart. What am I?

artery

300

 I absorb water from remaining food waste and prepare solid waste to leave the body. What am I?

Large Intestine

400

I am the largest part of the brain, controlling your thinking, memory, and voluntary movements. What am I?

cerebrum

400

I am the gas in the air that your body needs to survive with every breath. What am I?

Oxygen

400

I am tough tissue that connects one bone directly to another bone at a joint. What am I?

Ligament

400

I am the red cell carrying hemoglobin that delivers oxygen across your entire body. What am I?

Red Blood Cell

400

I produce bile to help break down fats and act as the body's major chemical filter. What am I?

liver


500

I sit at the back of your brain and help you balance, stand tall, and coordinate your movements. What am I?  

Cerebellum

500

We are the two large main branches that split off the trachea into each lung. What are we?

Bronchi

500

I am smooth, flexible tissue that cushions the ends of your bones so they don't rub together. What am I?

Cartilage

500

I am the defender cell that fights off germs, bacteria, and infections. What am I?

White Blood Cell

500

I produce insulin to regulate blood sugar and secrete enzymes into the small intestine. What am I?

Pancreas