| 1. | Only a and b | 2. | Only c and d |
| 3. | Only a, b and c | 4. | a, b, c, and d |
| Statement I: | Releasing hormones and inhibitory hormones from the hypothalamus reach the pituitary gland through a portal circulatory system and regulate the functions of the posterior pituitary. |
| Statement II: | The anterior pituitary is under the direct neural regulation of the hypothalamus. |
| 1. | Thalamus | 2. | Hippocampus |
| 3. | Hypothalamus | 4. | Corpora quadrigemina |
| I: | is also known as posterior pituitary. |
| II: | stores and releases two hormones called oxytocin and vasopressin. |
| I: | Prolactin regulates the growth of the mammary glands and formation of milk in them. |
| II: | TSH stimulates the synthesis and secretion of thyroid hormones from the thyroid gland. |
| III: | ACTH stimulates the synthesis and secretion of aminated hormones called catecholamines from the adrenal cortex. |
| IV: | LH and FSH stimulate growth of accessory sex organs and hence are called gonadotrophins. |
| 1. | 1 | 2. | 2 |
| 3. | 3 | 4. | 4 |
| I: | in females, stimulates a vigorous contraction of uterus at the time of child birth. |
| II: | is a steroidal hormone. |
| III: | causes milk ejection from the mammary gland. |
| Assertion (A): | An impairment affecting synthesis or release of ADH results in a diminished ability of the kidney to conserve water leading to water loss and dehydration. |
| Reason (R): | Vasopressin acts mainly at the kidney and stimulates resorption of water and electrolytes by the distal tubules. |
| 1. | (A) is True; (R) is False |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A) |
| 3. | Both (A) and (R) are True and (R) correctly explains (A) |
| 4. | (A) is False; (R) is True |
| Statement I: | Thyroid follicular cells synthesise three hormones: thyroxine, triiodothyronine and thyrocalcitonin. |
| Statement II: | Iodine is essential for the normal rate of hormone synthesis in the thyroid. |
| I: | Thyroid hormones play an important role in the regulation of the basal metabolic rate. |
| II: | Thyroid hormones are most important factors that affect the process of red blood cell formation. |
| III: | Thyroid hormones control the metabolism of carbohydrates but not of proteins and fats. |
| IV: | Maintenance of water and electrolyte balance is also influenced by thyroid hormones. |
| 1. | 1 | 2. | 2 |
| 3. | 3 | 4. | 4 |