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Human Health and Disease

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Biology

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Biology

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12

Which one of the following statements is correct?

  • Patients, who had undergone surgery are given cannabinoids to relieve pain

  • Benign tumours show the property of metastasis

  • Heroin accelerates body functions

  • Malignant tumours may exhibit metastasis


D.

Malignant tumours may exhibit metastasis

Malignant tumour first grows slowly. No symptoms are noticed. This stage is called the latent stage. The tumour later grows quickly. The cancer cells go beyond adjacent tissue and enter the blood and lymph. Once this happens, they migrate to many other sites in the body, where the cancer cells continue to divide. It is metasis. Only maligant tumours are properly designated as cancer.

Malignant tumour first grows slowly. No symptoms are noticed. This stage is called the latent stage. The tumour later grows quickly. The cancer cells go beyond adjacent tissue and enter the blood and lymph. Once this happens, they migrate to many other sites in the body, where the cancer cells continue to divide. It is metasis. Only maligant tumours are properly designated as cancer.


What is disease ?

Malfunctioning of one or more organs characterised by signs and symptoms is called disease.

What is the significance of ‘Typhoid Mary’ ?

Typhoid Mary was a Typhoid carrier who continued to spread typhoid for several years through food she prepared.

What is health ?

It is a state of complete, physical, mental and social well being of a person.

List advantages of good health.

Healthy people are more efficient and productive. good health also brings prosperity and people live long. It also reduces infant and maternal mortality.

Name three important aspects to maintain good health.

(i) Balanced diet (ii) Personal hygiene and (iii) Regular exercise.