Digestive system


Published on

Published in: Education
  • Be the first to comment

  • Be the first to like this

No Downloads
Total views
On SlideShare
From Embeds
Number of Embeds
Embeds 0
No embeds

No notes for slide

Digestive system

  1. 1. Digestive system <ul><li>Human nutrition </li></ul><ul><li>Energy </li></ul>
  2. 2. Activity <ul><li>Look in the library for the book Human biology, by Sylvia S. Mader. </li></ul><ul><li>Go to the chapter 9 page 151, and by teams you must resume the next information: </li></ul><ul><ul><li>Description of the organ </li></ul></ul><ul><ul><li>Function of the organ </li></ul></ul><ul><ul><li>Rol in nutrition (digestion or absortion) </li></ul></ul><ul><ul><li>What nutrients it ´s related whit the organ </li></ul></ul>
  3. 3. Basic structure of the digestive system <ul><li>Mouth </li></ul><ul><li>Pharynx </li></ul><ul><li>Esophagus </li></ul><ul><li>Stomach </li></ul><ul><li>Small Intestine </li></ul><ul><li>Glands </li></ul><ul><ul><li>Liver </li></ul></ul><ul><ul><li>Gallblader </li></ul></ul><ul><ul><li>Pancreas </li></ul></ul>
  4. 4. <ul><li>Large Intestine </li></ul><ul><li>Rectum </li></ul><ul><li>Anus </li></ul>Basic structure of the digestive system
  5. 5. Nutrition <ul><li>Digestion </li></ul><ul><ul><li>Is the chemical or mechanical process, where you break big molecules into small ones. </li></ul></ul><ul><li>Absorption </li></ul><ul><ul><li>Incorporate the nutrients inside of the body </li></ul></ul>
  6. 6. Nutrition Nutriens Funtion Where you found Absortion for our body Carbohydrates Main Energy as Gloucose Fruits, cereal grains and legumes Mouth, Stomach, small intestine Lipids Energy Reserve as Fats, insulation Corn oil, Olive oil, or polyunsaturated fat. Small intestine, Liver Proteins Essential Amino acids Synthesis of proteins Animal proteins as Muscles Stomach, Small intestine Vitamins and Minerals Metabolic functions Differents type of foods Small and large intestine
  7. 7. Minerals Mineral Significan sources Functions in the body Deficiency syptoms Symptoms Calcium Milk and milk products Principal minerals of bones and teeth Stunted growth in children, osteoporosis Excess calcium is excreted Magnesium Nuts, legumes, whole grains, sea food, chocolate Bone mineralization, protein synthesis, enzyme action, nerve transmision Weakness, confusion, depresed pancreatic hormone secretion, muscle spasm Not known Iodine Iodized salt, sea food Part of thyroxine, which regulates metabolism Goiter, cretinism Very high intakes depress thyroid activity Iron Beef, fish, poultry, shellfish, eggs, legumes, dried fruits Hemoglobin formation, energy utilization Anemia: weakness, pallor, headechs, reduced resistance to infection Iron overload, infection, liver injury zinc Protein-containing foods, meat, fish, poultry, grain, vegetables Part of many enzymes, insuline, genetic material Grown failure in children, delayed development of sexul organs Fever, nausea, vomiting, diarrhea
  8. 8. Vitamins Vitamin Significan sources Functions in the body Deficiency syptoms Symptoms Vitamin A Milk, margarine, cream, cheess, eggs, dark vegetables and vegetables Vision, growth and tissue repair, reproduction, bone formation, cancer proteccion, Hormone synthesis Night blindness, susceptibility to infection, abnormal tooth and jaw alligment, eye problem Red blood cells breakage, nosebleeds, abdominal cramp, nausea, diarrhea. Vitamin D Self synthesis with sun light, milk, margarine, cream, cheess, eggs Calcium and phosphorus metabolism Osteomalacia in adults, soft bones Raised blood calcium, constipation, weight loss, nausea kidney stone Vitamin E Vegetables oils, vegetables, wheat germen, Milk, margarine, cream, cheess, eggs Protects red blood cells, antioxidantes Muscle wasting, weakness, anemia Interference with anticlotting medication, general discomfort Vitamin K Liver, green vegetables and milk Bacterial synthesis in digestive tract Hemorrhagin Interference with anticlotting medication, may cause jaundice
  9. 9. Vitamins Vitamin Significan sources Functions in the body Deficiency syptoms Symptoms Thiamin Riboflavin B6 & B12 Meat, liver, fish, whole grains pasta, legums, oates Milk, dark green vegetables yogurt, cottage cheese shellfish Helps enzymes realease metabolic proces and nervous system function, normal visión formation of blood cell and genetic material Beriberi, edema, heart irregularity, mental confusion, Eye problems, skin disorden, Nervous disorden, anemia, kidney stones Rapid pulse, weakness, headaches, isomia, irratability Niacin Meat, eggs, poultry fish, milkbread, cereal, nuts. Helps enzymes release energy from;, nerves and digestive system Pellagra, loss of appetite, dizziness, indigestion. Flushing, nausea, cramp, ulcer irritation, low blood pressure Vitamin C Citruit fruits, tomatoes, potatoes, peppers, lettuce, cantaloupe, strawberry, mangos, papayas Synthesis of collageno, antioxidant, strengthens, resistans to infections, iron absortion Scurvy, anemia, Artherosclerotic, frequent infection, lossing teeth, muscle, degeneration, bone fragility. Nausea, Abdominal cramp, diarrhea, genetic disorder
  10. 11. New food pyramid http://www.mypyramid.gov
  11. 12. <ul><li>Digestion begins in the mouth. </li></ul><ul><li>The mouth contains saliva and an enzyme called salivary amylase, which begins the process of digestion of starch. </li></ul><ul><li>Teeth chew food and the tongue forms it into a bolus for swallow </li></ul>The Mouth and teeth
  12. 13. The pharynx and esophagus <ul><li>The pharynx an esophagus are for food passage to the stomach. </li></ul><ul><li>Peristalsis is a contraction that pushes the food along the digestive tract, which happens in the esophagus. </li></ul><ul><li>There is a sphincter between the esophagus and the stomach. </li></ul>
  13. 14. The Stomach <ul><li>The stomach can expand to accommodate food. </li></ul><ul><li>When food is present the stomach churns, mixing food with gastric juice. </li></ul><ul><li>The juice contains the enzyme pepsin with digest proteins. </li></ul><ul><li>The stomach empties in about 2-6 hours. </li></ul><ul><li>When food leaves the stomach it is liquid. </li></ul>
  14. 15. Small Intestine <ul><li>Is about 6 to 7 m in length. </li></ul><ul><li>Bile emulsifies fat and facilitates absorption of nutrients (sugars) an the lymphatic system (fats). </li></ul><ul><li>After nutrients are absorbed they are carried to all cells of the body through the bloodstream. </li></ul>
  15. 16. The liver, pancreas and gallbladder <ul><li>The pancreas produces panchreatic juice, which has enzymes for digestion of food. </li></ul><ul><li>Liver produces bile, which is stored in the gallbladder. </li></ul>