Lorem ipsum dolor sit amet, consectetur adipiscing elit. Test link

Class 8 Chapter 2. Health and Diseases Maharashtra state Board

Class 8 Chapter 2. Health and Diseases Maharashtra state Board

 

2. Health and Diseases

1. Distinguish between-  Infectious  and non -infectious  diseases.

Infectious diseases

non  infectious  diseases

1. The diseases which can be transmitted from one patient to other person are called infectious diseases.

1. The diseases which cannot be transmitted from one patient to other person, are called non-infectious diseases.

2. Contaminated air, water, food or carrier! vector animals or insects spread the infectious diseases.

2. Non-infectious diseases are not transmitted through any medium.

3. infectious diseases are acute diseases as they are suddenly caused due to infections from either bacteria, virus or protozoan. Thus, their symptoms are seen sooner.

3. Some non-infectious diseases are due to hereditary causes, some are  due to deficiency of the nutrients. Their symptoms are not seen suddenly but are developed gradually.

 

4. They are classified as communicable disease.

 

4.They are classified as non -communicable disease.

5. eg: diarrhoea, cholera, tuberculosis

5.eg: diabetes, hypertension, cancer

 

2. Identify the odd term.

a. Malaria, hepatitis, elephantiasis, dengue.

Ans: Hepatitis (All other diseases are caused by the carrier mosquito.)

b. Plague, AIDS, cholera, T.B.

Ans: AIDS [All others are bacterial (caused by bacteria) diseases.]

3. Answer in one to two sentences.

 a. Which are various media of spreading the infectious diseases?

Ans: Infectious diseases spread through contaminated air, water, food, vectors such as insects, animals and man.

b. Give the names of five non-infectious diseases other than given in the lesson.

Ans: Asthma, cataract, diseases of kidney such as kidney stones and renal failure, arthritis, Alzheimer which is a condition during old age, hypertension, migraine, etc.

c. Which are the main reasons of diabetes and heart diseases?

Aans: Improper lifestyle, wrong type of diet, lack of exercise, excessive mental stress and strain, imbalance in secretion of hormones, etc. are the main reasons for diabetes and heart diseases.

 4. What can be achieved / can be prevented?

a. Drinking boiled and filtered water

Ans:

1.      When water is boiled, all the disease causing pathogens present in it are killed.

2.     Different diseases like cholera, enteritis, diarrhoea, dysentery, hepatitis, typhoid are caused by such water-borne pathogens.

3.     If we boil the water we are protected against all such diseases.

4.     If the    water is filtered we can avoid infections from nematode   By boiling and filtering water, even the epidemics by such infectious diseases can be controlled.

b. Avoiding smoking and alcoholism.

Ans: .

1 Smoking and alcoholism are two dangerous habits that cause addictions. Alcoholism causes disorders of liver.
2. The addict suffers from malnourishment.

3. His I mental and psychological conditions become abnormal. There is social and familial) impacts too due to alcoholism .

4. Smoking is an invitation for cancer. In cigarettes/ bidis, there is hazardous nicotine. Nicotine is not only toxic but is also carcinogenic. Cancers of oral cavity, tongue, respiratory tract, lungs is very common among smokers. Therefore, addictions like smoking and alcoholism should always be avoided.


c. Regular balanced diet and exercise.

1. Regular and balanced diet results into perfect health. The disease fighting power or immunity of a person is increased due to healthy diet.
2. One can avoid of frequent infections and also mental well¬being is established.
3. Heart disease, diabetes, obesity, etc. can be avoided by not consuming high caloric junk food.
4. Exercise improves blood circulation. Many disorders which are caused by faulty lifestyle can be prevented by having regular balanced diet and exercise, thus one must always follow these for well-being.

d. Proper checking of blood before blood donation.

1. There are definite blood groups.
2. During blood transfusion, the donor’s and recipient’s blood should be well-matched with each other. Otherwise, blood gets clumped inside the body of recipient.
3. Through infected blood, the viruses such as those causing hepatitis B or AIDS are transmitted to other healthy persons. Thus, for prevention of transmission of such diseases, blood should be checked before blood donation.

5. Read the passage and answer the questions.

Master ‘X’ is a 3 year old child. He is living with his family in a slum. Public toilet is present near his house. His father is drunkard. His mother does not know the importance of balanced diet.

 a. Master ‘X’ can suffer from which different possible diseases in above conditions?

Ans: Since, the house of master X is near the toilet and he lives in a slum area, the chances are that there is less cleaniliness in that area. There are chances that he may suffer from diseases like salmonellosis, shigellosis, diarrhoea, trachoma, gastroenteritis, giardiasis, tapeworm infection and threadworm infection.

 b. How will you help him and his family in this situation?

Ans: In this case, the family needs to be made aware about cleanliness in and around their houses. There is a need to explain them the importance of balanced diet for them and their child. Since, the father is a drukyard, he needs counselling and treatment to get rid of the habit of alcoholism.

c. Which disease can occur to the father of master ‘X’?

Ans: The father of master X is a drunkyard which means he might suffer from diseases such as heart diseases, liver cirrhosis, ulcers and gastrointestinal ptoblems, brain damage etc.


6. Give the preventive measures of following diseases.

a. Dengue.

Ans : Dengue is a mosquito borne disease which is transmitted by Aedes mosquitoes which grow in clean and stagnant water. The breeding of this mosquito can be prevented by adopting the following steps:

1 larvae-eating fishes should be introduced in ponds

2 collection and storage of water should always be done in closed vessels

3 potted plants should have proper drainage to avoid collection of water

  in   the pots

4 pesticides should be used against mosquitoes as and when required

 b. Cancer.

Ans: Preventive measures for cancer:

1.have a healthy diet

2.exercise regularly

3. alcohol and avoid Tobacco, gutkha, cigarette, bidi, etc

4.go for regular health checkups

 c. AIDS.

Ans: Preventive measures for AIDS are:

1.avoid sexual contact with unknown persons

2.screening of blood before transfusion

3.avoid sharing of needles, syringe , toothbrush and razor of other person.

4. Awareness about AIDS and HIV is the real preventive measure.

7. Explain the importance.

 a. Balanced diet.

Ans: The diet that contains all the nutrients in the balanced proportion is called balanced diet. One can avoid malnutrition by taking balanced diet. The immunity increases due to balanced diet containing good proportion of vitamins and minerals. Some diseases can be avoided due to raised immunity. Wrong lifestyle and wrong diet can cause hypertension, diabetes or heart disease. To maintain our health and keep the body in equilibrium, we have to take balanced diet.

b. Physical exercise / Yogasanas

 Importance of exercise and yogasanas are:

1.reduces the risk of heart attack

2.helps in managing weight better

3.helps in maintaining blood cholesterol level

4.lowers the risk of type 2 diabetes and some cancers

5.helps in maintaining the blood pressure levels

6.helps in attaining stronger bones, muscles and joints and lowers the risk of osteoporosis

7.boosts the energy levels, makes you feel relaxed

8. Make a list.

 a. Viral diseases.

Ans : AIDS, Hepatitis, Influenza, Rabies, Polio.

b. Bacterial diseases.

Ans: Typhoid, Tuberculosis, Cholera, Leprosy.

c. Diseases spread through insects.

Ans: Malaria, Dengue, Elephantiasis.

d.  Hereditary diseases.

Ans: Diabetes, Haemophilia, Muscular dystrophy, Colourblindness.

www

 9. Write the information on modern diagnostics and treatments of cancer.

Ans : Following methods are used as diagnostic methods to detect the cancer. Techniques like CT scan, MRI scan, mammography, biopsy.

Cancer is treated using 3 major approaches depending on the type of cancer. These 3 approaches are- surgery, radiotherapy and chemotherapy. 

10. Enlist the names and composition of the medicines present at your home.

 

Name of medicine

Composition of medicine

Aciloc 150

Ranitidine 150mg

Razo 20

Rabeparazole  20 mg

Dolo650

Paracetomol 650 mg

Sprolac DS

Lactobcillus  120 million spore

Solvin cold

Chlorpheniramine Maleate 2mg

Paracetomol 500 mg

Phenylephrine 10 mg

O2

Ofloxacine 200 mg

Ornidazole 500 mg

 


Post a Comment