Digestive System

• What are the five digestive systems?

  Mouth, esophagus, stomach, small intestine, and large intestine
• It serves as the beginning of the digestive tract.

  Mouth
• Digestion consists of two major stages:

  Mechanical digestion and Chemical digestion
• Humans possess a complete digestive tract which begins with

  Mouth and ends in anus
• Begins the process of starch digestion.

  Enzyme Salivary Amylase
• A thick-walled, J-shaped organ that lies on the left side of the body beneath the diaphragm.

  Stomach
• A common passage for food and air.

  Pharynx
• A tubular structure, of about 25 cm in length that takes food to the stomach.

  Esophagus
• The two types of eating disorders

  Anorexia and Bulimia
• The 5 Disorders and Diseases of the Digestive System

  Constipation, Diarrhea, Colon Cancer, Hemorrhoids, and Peptic Ulcers
• What are the accessory organs and glands

  Pancreas, liver, and gallbladder
• It is a soft triangular gland lying between the small intestine and the stomach.

  Pancreas
• It is the largest gland in the body, and lies mainly in the upper right section of the abdominal cavity, under the diaphragm.

  Liver
• It is a pear shaped, muscular sac attached to the surface of the liver. Excess bile from the liver is stored in here. Water is also reabsorbed here so that the bile becomes a thick, muscular material.

  Gallbladder
• It surrounds a tube and closes or opens the tube by contracting and relaxing.

  Sphincter
• The three parts of small intestine

  Duodenum, Jejunum, and the Ileum.
• A long tube-like organ that connects the stomach and large intestine. Averages about 6m in length, compared to the large intestine.

  Small intestine
• The 2 types of Peptic Ulcers

  Gastric and Duodenal Ulcers
• It absorbs water, salts, and some vitamins. It also stores nondigestible material until it is eliminated at the anus.

  Large intestine
• It contains blood capillaries and a lymphatic capillary

  Lacteal
• Refers to the process by which nutrients in the food tube diffuse into the cells of the wall until they reach the circulating fluids

  Absorption