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प्रश्न
Short answer question
Which are the 2 types of goitre? What are its causes?
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उत्तर
Hypersecretion of thyroid hormones: It is caused by an increase in the levels of thyroid hormones. This increases metabolic rate, sensitivity, sweating, flushing, rapid respiration, bulging of eyeballs, and affects various physiological activities. Graves’ disease: Hyperthyroidism in adults results in this disorder. It is characterised by protruding eyeballs, increased BMR, and weight loss. Increased BMR produces a range of effects like increased heartbeat, increased B.P., higher body temperature, nervousness, irritability, and tremor of fingers.
Simple goitre: It is iodine deficiency goitre. Iodine is required for the synthesis of thyroid hormone and if there is a deficiency of iodine in the diet, it causes enlargement of the thyroid gland leading to simple goitre. This disease is common in hilly areas. Addition of iodine to table salt prevents this disease. The size of the thyroid gland is increased but the total output of thyroxine is decreased.
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संबंधित प्रश्न
match the conditions in column A with the cause in column B.
| A (Condition) | B (Cause) | ||
| a | Dwarfism and mental retardation | 1 | shortage of glucose in blood |
| b | Diabetes mellitus | 2 | Over secretion of growth hormone |
| c | Excess of glucose in blood | 3 | Insulin shock |
| d | Gigantism | 4 | Over secretion of thyroxine |
| e | Enlargement of breasts in adult males | 5 | Hypothyroidism |
| f | Exophthalmic goitre | 6 | Over secretion of cortical hormones |
People living in the low Himalayan hilly regions often suffer from goiter. What could be the possible reason for it?
Goiter is usually observed in people living in hilly regions.
Differentiate: Simple Goitre and Exophthalmic Goitre.
Draw and label the structure of thyroid gland.
Give a labeled diagram of thymus gland.
The growth and functions of the thyroid gland are controlled by ______.
Hormone controlling metabolism is ______.
On an educational trip to Uttaranchal, Ketki and her friends observe that many local people were having swollen necks. Please help Ketki and her friends to find out the solutions to the following questions.
Which probable disease are these people suffering from?
Give reason.
Simple goitre can be prevented by using iodised salt in food.
