The Human Body
6th Grade Science · 14 lessons
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Lessons
- 1How the Ear HearsEars detect sound waves that vibrate the eardrum. Tiny bones in the middle ear amplify vibrations, and the cochlea in the inner ear converts them into nerve signals.Lesson
- 2The Brain: Control CenterThe brain is the control center of the nervous system. It processes information from the senses, controls movement, stores memories, and manages body functions like breathing.Lesson
- 3The Circulatory SystemThe circulatory system includes the heart, blood vessels, and blood. Arteries carry oxygen-rich blood away from the heart, and veins return oxygen-poor blood to the heart.Lesson
- 4The Respiratory SystemThe respiratory system brings oxygen into the body and removes carbon dioxide. When you breathe in, air enters the lungs where oxygen passes into the blood.Lesson
- 5The Digestive SystemThe digestive system breaks food into nutrients the body can use. Food travels from the mouth through the esophagus, stomach, and intestines, with nutrients absorbed along the way.Lesson
- 6The Immune SystemThe immune system defends the body against disease-causing germs. White blood cells identify and destroy bacteria and viruses. Vaccines train the immune system to recognize specific threats.Lesson
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