Haryana State Board HBSE 9th Class Science Notes Chapter 13 Why Do We Fall Ill Notes.
Haryana Board 9th Class Science Notes Chapter 13 Why Do We Fall Ill
→ Health is a state of being well enough to function well physically, mentally and socially.
→ Health of all living beings is based upon environment.
→ Social environment has a vital importance for a person for individual health.
→ Community hygiene also influences individual health.
→ Balanced diet and healthy habits too are the factors to affect health.
→ The wordly meaning of ‘disease’ is ‘disturbed-rest’, ‘uncomfort’ or ‘discomfort’.
→ Short termed diseases are called as ‘acute diseases’ and long termed diseases are called as ‘chronic diseases’.
→ The causes of spreading a disease are called as ‘disease factors’.
→ Diseases are of two types: communicable diseases and non-communicable diseases. Communicable factors can be different with regard to different classes of living beings. They can be unicellular micro-organisms or multicellular.
→ The treatment of a disease is done on the basis of its factors and the class of Bacteria or Bacilli. Communicable factors are spread through water, air, physical contact, disease agents or pathogens. Prevention is better than cure.
→ Communicable diseases can be cured by public health cleanliness methods, that mitigate communicable factors.
→ Through vaccination communicable diseases can be cured.
→ It is quite essential to allocate public cleanliness and vaccination facility to all in order to cure communicable diseases more effectively.
→ Tetanus, diphtheria, whooping cough, small-pox, polio etc., vaccine is already available for each of these diseases.
→ The vaccination for hepatitis ‘A’ is also available.
→ Vaccine for small pox was discovered by an english physician, Edward Jenner who obtained it from the blisters of the cowpox.
→ Health: Health is the metabolic balanced stage of a person with respect to social, psychological (mental) or physical life.
→ Disease: Occurrence of discontinuity in health is disease in itself or occurrence of any disorder in any part of the body due to any reason is called as disease.
→ Symptoms: Symptoms is what, that alarms is regarding any physical fault or disorder.
→ Acute diseases: Diseases having short-termed life are called as acute diseases.
→ Chronic diseases: Diseases that run last longer or throughout life are called as chronic diseases.
→ Factors of diseases: The cause of disease is known as disease factor.
→ Communicable diseases: Diseases that spread through any type of contact are called as communicable diseases.
→ Non-communicable diseases: Diseases that may occur due to any other reason instead of physical contact are called as non-communicable diseases.
→ Antibiotics: All such substances that are prepared from a microbe (living body) are harmful for other microbes (living bodies) are called as antibiotics.
→ Sexually transmitted diseases: Diseases that spread through sexual contact are called as sexually transmitted diseases.
→ Diseases-agents or Pathogens: Those organisms that carry harmful bacteria from a sufferer or patient and take it to other healthy person are called as pathogens or vector.
→ Water borne diseases: Water borne diseases are called as water borne diseases.
→ Vaccination: It is that process in which substance (vaccine) is injected into a healthy person so that antibodies might produce.