The Muscular System
Smooth muscles are found in the urinary bladder, gallbladder, arteries, veins, and the digestive tract.
All muscle cells are composed of a number of actin and myosin filaments in series. (like books!)
What do muscles do?
We all have muscles, even cows, pigs, snakes and worms. Muscles allow us to move our bodies. Without them we couldn't jiggle, wiggle, walk, talk, stand up, sit down or play. They are also responsible for things we do without knowing it, like blinking, breathing, our heart beating and moving the food we eat through our bodies and into our digestive system.
Fun Facts:
- There are muscles at the root of your hairs that give you goose bumps.
- It takes 17 muscles to smile and 42 to frown.
- The largest muscle in the human body is the gluteus maximus.
- The smallest muscle is in your ear and is called the Stapedius
- Most muscles are attached to bones.
- The human body has about 630 muscles.
- Your muscles move over 100,000 times a day. (They are very busy!)
The Function of the MUSCULAR SYSTEM during digestion is to breakdown food into smaller sizes without any chemical changes. Also since the stomach is a muscle, it helps digestion by storing food in there.