Protection and Movement Systems
Think of your integumentary system as your body's natural armor. Your skin and the tissue underneath it create a tough barrier that keeps harmful bacteria and chemicals out while preventing your body from losing too much water.
Your skeletal system is like the frame of a house - it's made up of bones and ligaments that hold everything together. Not only do your bones support your weight, but they also protect vital organs like your brain and heart while storing important blood-making cells in your bone marrow.
The muscular system is your body's engine for movement. Your muscles and tendons work with your skeleton to help you walk, run, and even just sit up straight. Plus, when your muscles contract, they generate heat that helps keep your body temperature just right.
Your nervous system is basically your body's control center and communication network. Your brain, nerves, eyes, and ears work together to process everything you see, hear, and feel, then send lightning-fast electrical signals to coordinate your body's responses.
Quick Tip: Remember that these systems don't work alone - your muscles need signals from your nervous system to move your skeletal frame!