Kari's+Science

Human Body

Have you ever thought about what you would look like without bones? To answer your question you would be a pile of skin and guts on the floor. Did you know that you have more bones when you are a baby than when you are an adult. When you are a baby you have 300+ bones, when you are an adult you have 206 bones. Your spine holds up your whole body. Ball and socket joints are two of the most important joints. Joints are the things that move your legs, arms,and fingers. Your thigh bone is stronger than concrete.

Muscles help your body do simple things like lift things and ride a bike. There are three types of muscles Cranium, Smooth, and Skeletal. The most important muscle in the body is the heart. The job of each muscle is to cause motion or force. The brain is not a muscle. You have over 600 muscles in your body.

Digestive system. Have you ever thought that your small intestine is small, well you are wrong. Your small intestine is 20 feet long. The digestive system starts in your mouth by your esophagus. Your large intestine is 5 feet long. The food that is in your mouth is called a bolus. You have protein in your saliva. The acid in your stomach breaks down the food.

After you digest your food it goes through your uranium system, and out your bladder, as urine. In the urinary system you have 2 kidneys. Your bladder is like a balloon, when you need to go to the bathroom your body will tell you. If your pee is pale yellow when you are getting enough fluids. Your urine gets rid of all the waste in your body. Your kidneys filter your blood, you can live with one. Kidneys clean out your blood.

avioli are little saks that take in oxygen. Your right lung is larger than your left lung. Your right lung has 3 parts and your left lung only has 2 parts. Your cilia are your nose hairs. That capture all of the mucus that you breath. An epiglottis is an elastic flap that opens and closes in the back of your throat.

The heart is the most important muscle in your body. The average heart beats 70 times a minute. The heart is an cardiac muscle. Your blood needs to circulate in your body to give you nutrients. There are four chambers in your heart. The left side of your heart is rich in oxygen.