What is inflammation ? Write the symptoms of this in human body.
In human body, when there is an infection, an active immune system recruits many cells to the affected tissue to kill the disease-causing microbes. This recruitment process is called inflammation. Symptoms : (i) Swelling and pain, (ii) Fever.
Give two examples for each of the following :
(a) Acute diseases
(b) Chronic diseases
(c) Infectious diseases
(d) Non-infectious diseases.
List any three reasons why you would think that you are sick and ought to see a doctor. If only one of these symptoms were present, would you still go to the doctor ? Why or why not ?
Differentiate between communicable and non-communicable diseases. Give one example of each.
(i) Why a person suffering from AIDS cannot fight even small infections ?
(ii) In a slum area, many people are suffering from malaria. Mention any two unhygienic conditions that must be prevailing in that locality.
(iii) Why female Anopheles mosquito feeds on human blood ? [SAII – 2014]
Which amongst the two diseases : acute or chronic has adverse effect on the health of a person? Explain giving a suitable example.
Majority of children in many parts of India are already immune to Hepatitis A by the time they are five years old. Why ?
Classify infectious agents into different categories and also mention the diseases caused by them.
What do signs and symptoms indicate if a person is suffering from any disease ? [SAII -2014]
Becoming exposed to or infected with an infectious microbe (toes not necessarily mean developing noticeable disease. Explain.
(i) Which bacterium causes peptic ulcers ?
(ii) Who discovered the above pathogen for the first time ?
List any four essential factors that must be taken icare of by an individual for keeping good health.
Why do some children fall ill more frequently than others living in the same locality ?
Under which of the following conditions is a person most likely to fall sick ?
(a) When she is recovering from malaria.
(b) When she has recovered from malaria and is taking care of someone suffering from
chickenpox.
(c) When she is on a four-day fast after recovering from malaria and is taking care of someone suffering from chickenpox. Why ?
State giving reasons whether the following statements are correct or not:
Under which of the following conditions are you most likely to fall sick ?
(a) when you are taking examinations.
(b) when you have travelled by bus and train for two days.
(c) when your friend is suffering from measles. Why ?
In which of the following case do you think the long-term effects on your health are likely to be most unpleasant ?
A baby is not able to tell her / his caretakers that she / he is sick. What would help us to find out:
(a) that the baby is sick ?
(b) what is the sickness ?
“On exposure with an infectious microbe does not necessarily mean developing noticeable disease”. Do you agree ? Explain with reason. If yes, how severe infections occur in our body ?