Muscular System Basics
You have around 640 muscles in your body! They have a lot of functions. Most of your muscles are controlled by you, but a muscle like the heart is something that works independently without you even thinking about it.
Muscles are made up of a type of elastic tissue (sort of like the material in a rubber band). Thousands, or even tens of thousands, of small fibers make up each muscle.
Basic Interaction With Another System
How the Muscular System interacts with the Skeletal System
The skeletal system is covered with muscles that enable us to move. These muscles are attached to the bones through tendons and often stretch from one end of the bone to the other. As the fiber in the muscle contract, they shorten and pull the tendon. The tendon, in turn, pulls the bone and makes it move.
Interactions With Other Systems
How the Muscular System interacts with the Nervous System
The nervous system is the thing that actually sends the signals from the brain for the muscles to move.
How the Muscular System interacts with the Digestive System
The smooth muscles line the digestive system to help the broken down food move through the body.
How the Muscular System interacts with the Circulatory System
The cardiac muscle helps to move the blood around the body, working together with the circulatory system.