Why do we fall ill ppt.
Download as PPTX, PDF33 likes26,936 views
This document discusses diseases and infectious diseases. It defines disease as any condition that causes discomfort, distress or health issues. Diseases are classified as acute, lasting a short time, or chronic, lasting a lifetime. Diseases are caused by pathogens, poor health, organ malfunctions, pollution or genetics. Infectious diseases spread via air, water, food, vectors, physical or sexual contact. Treatment aims to reduce symptoms and kill microbes, while prevention focuses on vaccination, sanitation and avoiding transmission routes. The document emphasizes the importance of understanding infectious agents and disease transmission to effectively prevent and treat illness.
Why do we fall ill ppt.
- 1. Welcome to the world of biology Why do we fall ill???
- 2. What is Disease?? Disease is any condition that may lead to discomfort, distress, health problems, or death of the affected person……….
- 4. TYPES OF DISEASES Acute disease – Some diseases last for only very short periods of time, and these are called acute diseases. E.g. common cold
- 5. Other ailments can last for a long time, even as much as a lifetime, and are called chronic diseases. E.g. elephantiasis, tuberculosis
- 6. Diseases are caused by :- i) Pathogens like virus, bacteria, fungi, protozoans or worms. ii) Poor health and under nourishment. iii) Malfunctioning of body parts. iv) Environmental pollution. v) Genetic disorders.
- 10. INFECTIOUS DISEASES • Infectious agents • Means of spread • Organ specific & tissue specific manifestation • Principles of treatment • Principles of prevention
- 11. Infectious agents - Organisms that can cause disease are found in a wide range of such categories of classification.
- 13. Why is it important that we think of these categories of infectious agents?
- 14. As an example, let us take antibiotics. They commonly block biochemical pathways important for bacteria. Many bacteria, For example, make a cell-wall to protect themselves. The antibiotic penicillin blocks the bacterial processes that build the cell wall. As a result, the growing bacteria become unable to make cell-walls, and die easily.
- 15. Means of spread of infectious disease
- 16. Means of spread of infectious diseases :- Infectious diseases spread from an infected person to a healthy person through air, water, food, vectors, physical contact and sexual contact. i) Through air :- Common cod, Tuberculosis, Pneumonia etc. ii) Through water :- Cholera, Amoebic dysentery etc. iii) Through vectors :- Mosquitoes :- Malaria, Dengue, Yellow fever etc. Flies :- Typhoid, Tuberculosis, Diarrhea, Dysentery etc. iv) Through sexual contact :- Syphilis, AIDS. AIDS virus can also spread though blood transfusion and from the mother to her child during pregnancy and through breast feeding.
- 17. Organ specific & tissue specific Manifestations After entry of microbes in our body where do they go?
- 18. Answer depends on Point of entry : • e.g. tuberculosis - caused by bacteria - entry point through Nose to lungs
- 19. Prevention methods of some common diseases.
- 20. TYPHOID. Proper sanitation and disposal of faecal matter prevents infection . TAB vaccination provides immunity for 3 years . Typhoral oral vaccine also prevents typhoid.
- 25. Principles of treatment :- The treatment of infectious diseases consists of two steps. They are to reduce the effects of the disease (symptoms) and to kill the microbes which caused the disease. i) To reduce the effects of the disease :- This can be done by taking medicines to bring down the effects of the disease like fever, pain or loose motions etc. and by taking bed rest to conserve our energy. ii) To kill the microbes :- This can be done by taking suitable antibiotics and drugs which kills the microbes and the disease is cured.
- 26. • e.g. Japanese encephalitis (brain fever) – virus- enter through a mosquito bite infect the brain.
- 28. AIDS Viru
- 32. These small contributions From you and me, will Help us make a better future
- 33. He who has health, has hope; and he who has hope, has everything.
- 34. Thank you for watching this presentation presented byS.Lakshna