The Muscular System

1. By: Braylee Hagan The Muscular System http://www.youtube.com/watch?v=ren_IQPOhJc

2. The Functions • The function of the Muscular System is to relax, contract, and to provide force for your body to move.

3. The Organs The organs that allow the Muscular System to work are the Skeletal, Cardiac, and the Smooth. Skeletal: Moves bones Cardiac: found in the heart Smooth: internal organs

4. What does the system work with??? • It works with the skeletal system to provide skeletal movement and it works with the digestive system to control entrances and exits of digestive tract it also works with the endocrine system to produce heat plus it works with the nervous system to sense things it works with the respiratory system to allow the diaphragm to expand it works with the cardiovascular system to provide circulation.

5. Process of how my system works • Skeletal: Muscles often work in pairs so that they can pull in different or opposite directions. The cells that make up muscles contract and then relax back to its original size. Tiny microscopic fibers in these cells compress by sliding past each other like a sliding door being opened & shut again. While this happens, calcium rises which sends messages to the brain to regulator proteins which pull at each other causing motion. • Cardiac: The blood circulatory system (cardiovascular system) delivers nutrients and oxygen to all cells in the body. It consists of the heart and the blood vessels running through the entire body. The arteries carry blood away from the heart; the veins carry it back to the heart. • Smooth: Smooth muscle has the ability to stretch and maintain tension for a long periods of time.

6. Work Cited • http://www.livescience.com/26854-muscular-system-facts-functions-diseases.html