• Allows you to talk and to smell.
• Warms air to match your body temperature and moisturizes it to the humidity level your body needs.
• Delivers oxygen to the cells in your body.
• Removes waste gases, including carbon dioxide, from the body when you exhale 
• fun facts-the right lung is bigger than the left lung because the heart takes a bit of space from the lung

The human hand, including the wrist, contains 54 bones.

The femur, or thighbone, is the longest and strongest bone of the human skeleton.

The stapes, in the middle ear, is the smallest and lightest bone of the human skele

Your digestive system is a network of organs that help you digest and absorb nutrition from your food. It includes your gastrointestinal (GI) tract and your biliary system. Your GI tract is a series of hollow organs that are all connected to each other, leading from your mouth to your anus. Your biliary system is a network of three organs that deliver bile and enzymes through to your GI tract your bile ducts.What does the digestive system do?

Your digestive system is uniquely constructed to do its job of turning your food into the nutrients and energy you need to survive. And when it’s done with that, it handily packages your solid waste, or stool, for disposal when you have a bowel movement

What is the digestive system?

The digestive system serves the role of taking in nutrients, eliminating waste, and absorbing and using the nutrients we take in. The digestive system includes all the parts of your body that are involved when you eat or drink.

While you may not think about your digestive system often, you are using it all the time. You also may not think of the digestive system as fun, but let’s take a look at some fun facts about your digestive system you may not have known.

The respiratory system's main job is to move fresh air into your body while removing waste gases. Once in the lungs, oxygen is moved into the bloodstream and carried through your body. At each cell in your body, oxygen is exchanged for a waste gas called carbon dioxide.

by Alex 4A

Language switcher. Your lungs are the pair of spongy, pinkish-gray organs in your chest. When you inhale (breathe in), air enters your lungs, and oxygen from that air moves to your blood. At the same time, carbon dioxide, a waste gas, moves from your blood to the lungs and is exhaled (breathed out).

The skeletal system is your body's support structure. It gives your body its shape, allows movement, makes blood cells, provides protection for your organs and stores minerals.