The body is a fascinating piece that starts from a single cell,which splits and spits till you are what you are. Today I will be explaining the digestive, skeleton ,skin, and reproductive systems.
The digestive system is how you eat. Step 1: you eat something and it gets chomped down in saliva. Step 2: the food squeezes through a tube and through a flap. Step 3; It goes in the stomach and acid melts it down even more. Then, once it's done, it bounces off a small tube. Once it's done, it goes through a big tube.And that is the digestive system.
The skeletal system is important because otherwise your body would be a shapeless heap. It makes you stand up and lay down. The two main parts are the axial skeleton and the appendicular skeleton. The bone's names are the cranium, Clavicial, Humerios, sternum, radios, pelvis, carpel, ribs, scapnla, vertibray, ulna, femer fibula pitella , Tibula, and the tarsel. These are the main bones, but in total there are 206 bones.
The skin has three layers: the epidermis, the dermis, and the hypodermic fat. The epidermis has melanin, which creates cells, the cells go up, and dies out of the skin. The dermis has nerves, which send signals to the brain. The dermis also has blood vessels: blue vessels and red vessels. It also has sweat. Lastly, the Hypodermic fat has hair and oil glans.
Birth starts from two humans: a boy and a girl. The girl has the egg, the boy has the sperm. At first it is smell that bring them together. Hormones come to the brain, efficiently shutting it down. So literally being in love makes you dumb. Touch is also important. Once a sperm manages to get the the egg, the form a baby. The girl has the baby. It is important that you eat healthy when you have a baby in your womb. Then, finally the baby comes out.
That is how the skeletal,skin,and reproductive systems work. Without them, there's nothing you could do. I hope you enjoyed this lesson.
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