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Question
How is iodine important to our body?
Solution
Iodine is the active ingredient in the production of thyroxin hormone. If there is insufficient quantity of iodine in food, the thyroxin hormone is not produced. As a result, thyroid gland increases in size which is Visible as a swelling in the neck. This condition is known as goitre.
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RELATED QUESTIONS
Given below is a table designed to give the names of the glands, the hormones produced, their chief functions, the effects of oversecretion and undersecretion in respect of thyroid, pituitary and pancreas. Fill up the blanks 1–13.
| S.No. | Source Gland cells | Hormone produced | Chief function | Effect of oversecretion | Effect of undersecretion |
| 1 | (1) ______ | Thyroxine | (2) ______ | (3) ______ | (4) ______ |
| 2 | Beta cells of Islets of Langerhans | (5) ______ | Promotes glucose utilisation by the body cells | (6) ______ | (7) ______ |
| 3 | (8) ______ | Growth hormone | (9) ______ | (10) ______ | Dwarfism |
| 4 | (11) ______ | Vasopressin | Increases reabsorption of water from kidney tubule | (12) ______ | (13) ______ |
Name the following:
Hormone regulating metamorphosis
Name the hormone produced by the following glands giving one function of each:
(i) Thyroid (ii) Pancreas (iii) Adrenal medulla
The thyroid gland is called as nature gland.
Fill in the Blanks:
A disease caused in children due fo under secretion of thyroxin is ______.
State the Location
Thyroid
The growth and functions of the thyroid gland are controlled by ______.
A child has low BMR, delayed puberty and mental retardation. Identify the disease.
The condition showing swelling in face and hands and sluggishness due to hypothyroidism is called ______.
Name the following:
The interconnection between the two lobes of thyroid gland (technical term).
