Q4 SCIENCE REVIEWER

• The human digestive system consists of the gastrointestinal tract plus the accessory organs of digestion. Digestion involves the breakdown of food into smaller and smaller components, until they can be absorbed and assimilated into the body.
• Mouth - it is where digestion begins, and it breaks down food into smaller particles.
• PHARYNX or THROAT is a muscular tube in the middle of your neck.
• Esophagus it is used to transport food entering the mouth through the throat and into the stomach.
• Small Intestine an organ where the most absorption of nutrients from food takes place. Lies between the stomach and large intestine, it receives bile and pancreatic juice through the pancreatic duct to aid in digestion.
• Large Intestine is used to absorb water and salts from the material that has not been digested as food, and get rid of any waste products left over.
• Rectum is found at the lower end of your large intestine, the rectum, stores stool until it pushes stool out of your anus during a bowel movement.
• Anus is the opening at the end of the large intestine after the rectum.
• Stomach holds the food and mixes it with acid and enzymes that continue to break the food down into liquid or past.