The structure, shown in the halo in the given diagram, is:
1. is the master endocrine gland
2. is responsible for regulating the body's daily (circadian) clock
3. is the pneumotaxic centre
4. is the thermostat of the human body
Assertion (A): | Oxytocin helps in parturition and causes milk ejection from the mammary glands. |
Reason (R): | Oxytocin acts on the smooth muscles of our body and stimulates their contraction. |
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. |
Match each item in Column I with one in Column II and select the correct match from the codes given:
Column I | Column II | ||
A. | Heart | P. | Synthesis of angiotensinogen |
B. | Lungs | Q. | Secretion of atrial natriuretic peptide |
C. | Kidneys | R. | Primary site for conversion of angiotensin I to angiotensin II |
D. | Liver | S. | Secretion of renin |
A | B | C | D | |
1. | P | Q | R | S |
2. | R | Q | P | S |
3. | Q | R | S | P |
4. | Q | R | P | S |
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. |
Both cortisol and insulin:
I. favour protein anabolism
II. Cause proteolysis
III. Reduce the uptake of amino acids by the body cells
1. Only I and II are correct
2. Only I and II are correct
3. I, II and III are correct
4. I, II and III are incorrect
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 |
1. | Acromegaly | Excess of growth hormone in adulthood |
2. | Diabetes insipidus | Deficiency of insulin |
3. | Graves’ disease | Hyperthyroidism |
4. | Addison’s disease | Underproduction of adrenal cortex hormones |
1. | Thymus | Dorsal side of aorta |
2. | Parathyroid | Back side of thyroid |
3. | Pineal | Dorsal side of forebrain |
4. | Adrenal | Superior pole of kidney |
1. | Hyposecretion of growth hormone in adults | Acromegaly |
2. | Lack of insulin | Diabetes insipidus |
3. | Hyperthyroidism | Graves’ disease |
4. | Hypocortisolism | Cushing’s disease |
1. | Parathyroid hormone | Increases calcium levels in the blood |
2. | Aldosterone | Stimulates reabsorption of sodium at the renal tubules |
3. | Insulin | Enhances cellular glucose uptake and utilization |
4. | Cortisol | Enhances cellular amino acids uptake and utilization |