We learned that the nervous system senses surroundings and communicates information within the body. The nervous system is made of tiny structures called nerve cells and chains of these make up nerves which carry information to and from the brain. The brain is like a computer processing information from millions of nerve cells working together. The spinal cord is a rope-like bundle of nerves that runs along the backbone. It’s like the main pathway for information. Nerves connect to the spinal cord from all over the body. Some nerves send information to the brain and others receive signals from the brain.
Assignment: Add information and graphics about the nervous system to our science notebook.
We learned about the integumentary system which is made up of toenails, fingernails, hair, and the largest organ in the body, the skin. We learned that blood vessels near the surface of the skin help cool your blood and that hair helps keep your head warm. Some of the functions of skin are to protect from germs and keep water inside. We learned that friction ridges are the circles on your fingertips which are more sensitive to touch then other places on your body. Next we learned that the epidermis is the outer skin and dermis is the inner skin layer that contains hair follicles, sweat glands, blood vessels, and nerve endings.
Assignment: Add notes on integumentary system and fingerprints to the science notebook.