Science

I read from pages 127 to 149. Chapter 6 Lesson 5, I learned about muscles. Voluntary muscles do what you want them to do consciously. Involuntary muscles are automatic. When you smile it takes 13 muscles, where as when you frown it takes 34 muscles. Next it goes into tech and a guy named Matt who gets a mechanical arm. After that on Lesson 6 it talks about skin and how the body has 30,000 to 40,000 dead skin a minute. It also teaches you how if you have a cut, there is a chance it might get infected. Hair and nails are part of our skin. Lesson 7, how your bones, muscles, and skin interact with other body systems. The bones protect your organs such as the brain. Muscles move other part of your body and helps the do their job. Bone marrow makes your blood cells. Your skin protects and covers your body. And the digestive system provides nutrients for the skin. Then a Chapter Review. Key Idea of the Skeleton: Bones give you structure and support, without them we would be similar to blob fish. No offence blob fish. Muscles, Key Idea: Your bones and muscles give your the ability to move. Key Idea, Skin: The skin covers and protects your body. Body Interaction Key Idea: All your organisms working together to keep the body healthy. Chapter 7 Lesson 1, Nervous System. It talks about control in your body. Then the spinal cord. The nervous system all made out of nerve cells. And your brain made out of nerve cells. Moving along. Senses. Gather information, move it along to the brain. Lesson 2, the Brain. The brain has 100 billion nerve cells. The brain has three main parts. The biggest one is memory, muscle control, smelling, tasting, seeing and hearing. The second biggest part that is directly below the first is for the coordination and balance. The third and final is muscles for breathing sneezing, coughing and digestion. Then the next thing is reflexes. A reflex is a thing you do in response for something. Onward! Next is are senses. Smelling, hearing, feeling, and so on. There are five senses. The ones I have not already listed are seeing and tasting.