| 1. | Reabsorption of Na+ and K+ |
| 2. | Excretion of Na+ and K+ |
| 3. | Excretion of K+ and phosphate ions |
| 4. | Reabsorption of Na+ and phosphate ions |
Dwarfism can be caused by the deficiency, during childhood, of:
| I. | Growth hormone |
| II. | Thyroid hormones |
| 1. | Only I and the dwarf will have normal mental development |
| 2. | Only II and the dwarf will also be mentally retarded |
| 3. | Both I and II and in both cases the mental development will be affected |
| 4. | Both I and II and mental development will be effected only in II. |
An abnormal increase in the secretion of aldosterone will lead to:
| 1. | An increased concentration of sodium in the blood and a reduced blood pressure |
| 2. | An increased concentration of potassium in the blood and a reduced blood pressure |
| 3. | A decreased concentration of sodium in the blood and an elevated blood pressure |
| 4. | A decreased concentration of potassium in the blood and an elevated blood pressure |
Identify the correctly matched pair:
| Part of the pituitary | Hormone synthesized | |
| I: | Pars distalis | Gonodotropin releasing hormone |
| II: | Pars intermedia | Melanocyte stimulating hormone |
| III: | Pars nervosa | ADH and oxytocin |
| 1. | Only III | 2. | Only II |
| 3. | Only I and II | 4. | Only II and III |
| Assertion (A): | Hypothalamus is connected to the posterior lobe of the pituitary by hypophyseal portal veins |
| Reason (R): | The hypophyseal portal arteries carry blood from the hypothalamus to the neurohypophysis |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
| Statement I: | A hypothalamic hormone called Gonadotrophin releasing hormone (GnRH) stimulates the synthesis and release of gonadotrophins by gonads. |
| Statement II: | Somatostatin from the hypothalamus stimulates the release of growth hormone from the pituitary. |
| 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 |
| Assertion(A): | Adrenaline and noradrenaline are called emergency hormones or hormones of Fight or Flight. |
| Reason(R): | Adrenaline and noradrenaline are monoamine neurotransmitters. |
| 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 |
| I: | is a steroid |
| II: | acts on target cells through a second messenger |