Digestive and Muscular Systems

1. Digestiveand MuscularSystems By Blandy , Esmeralda , Misty , Alexis , Idaly

2. Digestive system • The digestive tract (also known as the alimentary canal) is the system of organs within multicellular animals that takes in food, digests it to extract energy and nutrients, and expels the remaining waste.

3. Facts about the Digestive System On average, the stomach produces 2 liters of Hydrochloric Acid (HCl) daily. We eat about 500kg of food per year. 1.7 liters of saliva is produced each day.  Every day 11.5 liters of digested food, liquids and digestive juices flow through the digestive system, but only 100mls is lost in faces. Hundreds of different kinds of enzymes are needed to properly digest food. Cooking destroys food enzymes, forcing the body to make its own. Over time the body may tire of this extra work, leaving room for possible indigestion.

4. The parts of the Digestive system • Large intestine or Colon: Any bigger parts left undigested or nutrients not absorbed are processed here so that only feces are left Mouth or oral/ buccal cavity: The digestion process starts from the mouth where the teeth grind food into smaller pieces and saliva is secreted that moistens the food and the tongue rolls it.

5. More Information on the digestive system • The digestive system is made up of the digestive tract—a series of hollow organs joined in a long, twisting tube from the mouth to the anus—and other organs that help the body break down and absorb food • Organs that make up the digestive tract are the mouth, esophagus, stomach, small intestine, large intestine—also called the colon—rectum, and anus. Inside these hollow organs is a lining called the mucosa. In the mouth, stomach, and small intestine, the mucosa contains tiny glands that produce juices to help digest food. The digestive tract also contains a layer of smooth muscle that helps break down food and move it along the tract. • Two “solid” digestive organs, the liver and the pancreas, produce digestive juices that reach the intestine through small tubes called ducts. The gallbladder stores the liver’s digestive juices until they are needed in the intestine. Parts of the nervous and circulatory systems also play major roles in the digestive system.

6. Digestive system

7. Muscular system • The human body contains more than 650 individual muscles which are attached to the skeleton, which provides the pulling power for us to move around. The main job of the muscular system is to provide movement for the body. The muscular system consist of three different types of muscle tissues : skeletal, cardiac, smooth. Each of these different tissues has the ability to contract, which then allows body movements and functions. There are two types of muscles in the system and they are the involuntary muscles, and the voluntary muscles. The muscle in which we are allow to control by ourselves are called the voluntary muscles and the ones we can? control are the involuntary muscles. The heart, or the cardiac muscle, is an example of involuntary muscle.

8. Facts about the Muscular system • Did you know you have more than 600 muscles in your body? They do everything from pumping blood throughout your body to helping you lift your heavy backpack. You control some of your muscles, while others — like your heart — do their jobs without you thinking about them at all.

9. Picture of the muscular system