Presentation on theme: "I. Digestive Systems A. Digestion – Process by which the body breaks down food into smaller components. B. Digestion System – Group of organs that."— Presentation transcript:
I. Digestive Systems A. Digestion – Process by which the body breaks down food into smaller components. B. Digestion System – Group of organs that work together to break down foods into substance that your cells can use.
Digestive System 1. Mouth a. Teeth crush, tear, and grind the food b. Salivary gland produces saliva c. Before swallowing epiglottis closes trachea and food is pushed down esophagus using smooth muscles.
2 Stomach a. Acid and enzymes break down food into chyme.
3. Small Intestine a. 20 feet in length where nutrients are removed into the blood stream. b. Liver – Body’s largest gland. 1. Secrets bile which helps to digest fats. c. Gallbladder – stores the bile until it is needed. d. Pancreas – a gland that produces pancreatic juice, which helps the small intestine break down proteins, carbohydrates, and fats.
4. Large Intestine Takes water and any other nutrients out of the food. Large intestine is about 5 feet long (FYI)
a. FIBER 1. NON DIGESTIBLE 2. could help reduce the risk of colon cancer 3. reduces blood cholesterol
5. Colon Where the waste is stored until it is excreted out of the body.
II. Excretory System
A. Excretion – Process by which the body gets rid of waste. B. Kidney – A pair of organs that filter water and waste materials from the blood. 1. Helps to regulate the amounts of water and salts in the body.
C. Ureter Once waste leaves the kidneys it travels down the ureter to the bladder
D. Bladder E. Urethra A pouch in which urine is stored. 1. A signal from the nervous system lets the person know when the bladder is full. A tube that passes out through the body.