We can see because our eyes process light and send signals to our brain. Light passes through the clear surface of the eye called the cornea. It then passes through the black center of the eye called the pupil. The pupil is actually an opening to the inside of the eye. Have you noticed that your pupil can get larger or smaller to allow more or less light into your eye? The iris, or the colored part of your eye, is the muscle responsible for this. The inner part of the eye is filled with a gel-like material.  A clear flexible lens focuses light to the back of the eye (the retina), where it is turned into nerve impulses that it sends to the brain to interpret what you see.

Touch is the sense that allows us to feel what is happening in our environment. The sense of touch is spread through the whole body. This is due to nerve endings in the skin and other parts of the body that send information to the brain. There are four types of sensation that can be felt: cold, heat, contact, and pain. Hair on the skin can increase touch awareness and act as an early warning system. Have you ever “felt” something hot before you even touched it?

Our skeleton gives us our shape and allows us to move, as well as protects the organs inside our body. The adult body has 206 bones, made up of several osseous layers.  The innermost layer has a thick jelly-like material that makes blood cells.

Our nose is the organ we use to detect smell. It has two holes called nostrils, divided by a wall called the septum. The tip of the nose is made of cartilage. A mucous membrane lining the inside of the nose contains smell receptors connected to special olfactory nerves. These nerves react with molecules found in the fumes of smells and send messages to the brain. Our sense of smell can detect ten basic types of scents. These are fragrant, woody, fruity, sharp/pungent, chemical, minty, sweet, popcorn, sickening, and lemon. Our smell also helps us to taste foods. In addition to helping us smell things around us, our nose cleans and warms the air we breathe.

Teeth are for chewing, but did you know you also need them to talk? It is natural for you to loose 20 of your teeth when you are young starting around 5-6 years old.  You only get one set of permanent teeth (32 in all) so you need to do your best to keep your teeth and gums clean and healthy.  The best way to brush your teeth is in little circles going around and around until you have covered every surface of every tooth. Do this twice a day and floss between your teeth with dental floss.

Now hear this! The ear is made up of three different sections: the outer ear, the middle ear, and the inner ear. With the help of liquid, tiny hairs and three small bones, these ear parts all work together to collect sound and send messages to your brain, and your brain then tells you what you are hearing. The ear is not just an organ that helps us hear, but also makes it possible for humans to walk and keep our balance. Did you know there is a limit to the amount sound that the ears can tolerate? The moment a sound exceeds the natural hearing limit, our ears will buzz.

The Iron Lung was invented in 1927 to help people’s lungs breathe when they were unable to do so on their own. This machine was greatly needed during the Polio epidemic of the 1940’s. If severe enough, the polio virus could affect a person’s nervous system, making it difficult to breathe or move. The machine, which was plugged into electricity, worked like a vacuum, forcing air in and out of the large metal chamber. The pressures inside the chamber forced air into and out of a person’s lungs. Children, and some adults, who became infected with polio had to stay in the iron lung for weeks or months until they were well enough to breathe on their own.

Our sense of taste starts with our tongue. The tongue is made up of a group of muscles that allow us to taste food, swallow and talk. A healthy tongue is pink and covered with microscopic taste buds that transmit information to your brain to help you taste your favorite foods. Special smelling receptors in your nose also help you taste. Try holding your nose the next time you eat something. You’ll notice that your taste buds are able to tell your brain something about what you are eating, like if it is sweet or sour, but you won’t be able to pick the exact flavor until you let go of your nose.

The brain is the big boss of the entire body. It controls, well… everything! How do you remember how to play that game or recall the way to the store? How does your stomach know to move food along the digestive tract? Have you ever touched something hot and immediately pulled your hand back, then said “Ouch!” a second later? Your amazing brain is responsible for all of it!

Cells make up the building blocks of life.  Our bodies have trillions of cells that take in nutrients, change those nutrients into energy, and do many special jobs within the body. Cells also contain all the information inside of them that makes us unique. Each tiny cell has its own parts, each with their own jobs. Take a look in the microscope to see some of these cells.

Without even thinking about it, what is something that you do all day, everyday, no matter who you’re with or where you’re located? If you said breathe, you are correct! Breathing in oxygen is necessary to stay alive and your lungs are the organ that is large and in charge of this process. Every cell in the human body requires oxygen, and there are around 37 trillion cells in your body. Eating fruits and vegetables and drinking plenty of water, and of course exercise and deep breathing help keep your lungs clean and healthy.

Welcome to Aunt LC’s Market! Take a look around at all the different kinds of food we can eat. Do you see fresh fruits and vegetables? Do you see snack foods in packages? Take time to look at how much sugar soda contains. Compare that to sugars found in apples or oranges. Which is healthier? Use the cash register scanner to “scan” different foods and find out how they help your body to grow. If you have time, place the foods into the proper food group. Good luck!

We hope you our Heart exhibit as much as we do! Your heart pumps your blood all around your body through tubes called blood vessels. In fact, when you grow up, you will have over 60,000 miles of blood vessels in your body!  To keep your heart healthy, you must exercise, eat healthy foods, and avoid smoking.

Although you can’t see it, your immune system is your body’s sickness-fighting machine.  It has to be able to find and destroy dangerous bacteria, viruses, or other things that could harm your body. White blood cells and lymph nodes are just a few parts of this amazing and still mysterious system!

Which of these items help to keep your body health?

What are the shots called that people get when they’re healthy to protect them from a sickness in the future?

About how many times does the average heart beat per minute?

Your heart is about the size of:

Which would be a "better" choice of hamburger at McDonald's?

How many teaspoons of sugar are in a hot fudge sundae?

When you breathe in air, you bring oxygen into your lungs and you breathe out:

Your body couldn't breathe without this system, what is it?

What are the major digestive organelles called?

Where are chromosomes and DNA located?

Which lobe helps with hearing?

Which part of your brain controls breathing and digestion?

New taste buds are replaced about every ______ days.

Insects have taste organs on their:

Why were there windows placed in the machine?

How much did an Iron Lung cost in the 1930's?

How many of the smallest bones in your body are in your middle ear?

The snail shaped, fluid filled organ in your ear is called the:

What part of the tooth "glues" the root to the jawbone?

When you smile, what is the part of the tooth you can see which is not covered by gum?

Why does the nose contain hairs called cilia?

If dust or pollen irritates the mucous membrane, a person might:

What is the name of the largest bone in the body?

What is the proper term for the knee cap?

Why do we shiver and get "goose" bumps?

Which parts of the body have the most touch receptors?

True or False: Your lens bends images you see upside down and your brain flips the image back to make it  right side up.

The cones located in the retina react to ________.