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प्रश्न
Given alongside are the diagrammatic sketches of some endocrine glands. Observe the figures and answer the following questions:
(i) Label the parts numbered 1 to 5.
(ii) Name the hormones secreted by (2) and (5).
(iii) Which chemicals in our body are greatly affected by hormones?
(iv) What is the chemical nature of hormones?
(v) Name the elements related to the functioning of hormones secreted by the structure (2) and (5).
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उत्तर
(i)
1. Larynx.
2. Left lobe of the thyroid gland.
3. Trachea (windpipe).
4. Oesophagus.
5. Parathyroid glands.
(ii) Structure (2) secretes thyroxin hormone and structure (5) secretes parathormone.
(iii) Enzymes; which constitute the enzyme system of the body.
(iv) Hormones may be proteins, amino acids or steroids.
(v) Iodine is related to the functioning of glands (2) calcium, phosphorus is related to the functioning of the gland (5).
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संबंधित प्रश्न
Draw an outline figure of the human body and show the location of different endocrine glands.
Match the items of column I with those of column II
| Column I | Column II | ||
| 1 | β (beta) cells of islets of Langerhans |
a | condition due to undersecretion of thyroxine in adults |
| 2 | Thyroid | b | Glucocorticoids |
| 3 | Cretinism | c | Exophthalmic goitre |
| 4 | Addison's disease | d | Increases heart beat |
| 5 | Hypothyroidism | e | Thyroxine |
| 6 | Myxoedema | f | Adrenal cortex |
| 7 | Adrenaline Under secretion of thyroxine in a child |
h | Under secretion of thyroxine in a child |
An organ, tissue or cell where a hormone produces its effects is known as ______.
Complete the following:
| Gland/Organ | Hormone | Function |
| (i) Stomach | __________ | __________ |
| (ii) Parathyroid | __________ | __________ |
| (iii) __________ | __________ | Lowers blood sugar level. |
| (iv) Adrenal medulla | __________ | __________ |
| (v) Pancreas (Alpha cells) | __________ | __________ |
| (vi) Testes | __________ | __________ |
Differentiate: Gigantism and Acromegaly.
Why do we hiccup and cough sometimes when we swallow food?
Growth hormone is important for normal growth. Justify the statement.
Which of the following organs in mammals does not consist of a central meduallary’ region surrounded by a cortical region?
Acromegaly is caused by ______.
Distinguish between Diabetes mellitus and Diabetes insipidus (endocrine gland concerned).
