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Question
Where is the thymus gland located and what is its function?
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Solution
The thymus gland is located in the mediastinum in front of the heart. This secretes a hormone thymosin which stimulates the lymphocytes to destroy invading microorganisms and antigens. It degenerates on aging, decreasing the immunity in old age.
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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) ______ |
Given ahead is a portion from the human body showing some important structure in ventral (front) view.
 |
- Where is this portion located in the body?
- Name the structures numbered 1-3.
- State one main function of each of the structures named above.
- Is there any duct to carry the secretions from the structure numbered 2? If so, give its name.
Name the following:
The hormone that controls the basal metabolic rate
State the Location
Thyroid
Long answer question.
What will be the effect of thyroid gland atrophy on the human body?
Long answer question
Describe in brief an account of disorders of the thyroid.
Which hormone requires iodine for its formation?
What are the effects of hypothyroidism (observed during pregnancy) on the development and maturation of a growing baby?
Oversecretion of thyroxin causes ______ goitre.
Mention the name of disease based on the clue/symptom given below:
Swelling in the neck.
