3.47 Urinary System Definition & Facts Did you know that peeing is actually your body’s way of taking out the trash? Learn about the urinary system, how it keeps you healthy and more amazing facts about pee in this lesson.…

3.46 Sense of Hearing Hearing is processed through ears in humans but can also be processed by other body parts in other animals. Learn about hearing and discover the parts of the ear, the importance of vibrations, and a condition…

3.45 Male Reproductive System The male reproductive system is vital to the creation of life for many living organisms. Explore the male reproductive system and learn what part the testes play in sperm production and the journey of the sperm…

3.44 Female Reproductive System The female reproductive system is where a baby will gradually grow. Discover how sperm enters into the female reproductive system, where eggs are produced and later fertilized, and the uterus where a baby is nurtured until…

3.43 Stomach Facts The stomach is the body organ where the food goes and gets digested. Discover facts about the stomach and learn about the main jobs and functions of the stomach. What Is the Stomach? If someone asked you…

3.42 Muscle Facts Did you know your heart is a muscle? Learn about the different types of muscles in your body, how muscles work, and what muscles are made of in this lesson. Mighty Muscles Did you know your heart…

3.41 Teeth Facts Teeth are the hard bony structures in the mouth used to chew food. Discover the different types of teeth, how many teeth are in the human mouth, and the parts of a tooth, such as the enamel,…

3.40 Human Eye Facts & Anatomy After light enters the human eye, it is eventually transmitted through signals to the brain. Learn about the similarities between a camera and the eye, and the six parts of the human eye. The…

3.39 Bone Facts Did you know that babies have more bones than adults? Learn about how bones grow and change as you age, what your bones do, and what they’re made of in this lesson. Your Bones Are Alive! Think…

3.38 Autism : Definition & Facts You might know someone with autism, but what does that mean, exactly? Find out how this condition affects language, social skills, and other aspects of every day life for those who have it. What…

3.37 Brain Anatomy Our brain helps us do everything it enables us to breathe, keeps our heart beating, helps us ride a bicycle, allows us to see color, and so much more. Learn about the different parts of your brain…

3.36 Parts of the Skeletal System Learn about the skeletal system and the parts of the skeletal system. In addition to bones, discover the cartilage and ligament tissues that also play important roles, and explore the function of the skeleton…