Q. No.Match each item in COLUMN I [Hormone] with one in COLUMN II [Stimulus for release] and select your answer from the codes given:
| COLUMN I | COLUMN II | ||
| A. | ADH | a. | Dehydration, increased blood osmolarity, decreased GFR |
| B. | Aldosterone | b. | A rise in plasma potassium level |
| C. | Cholecystokinin | c. | Fat rich chyme in stomach |
| D | Erythropoietin | d. | Tissue hypoxia |
Codes
| A | B | C | D | |
| 1. | a | b | c | d |
| 2. | a | b | d | c |
| 3. | b | a | d | c |
| 4. | b | a | c | d |
A decrease in blood glucose is most likely to result in:
1. decreased insulin and glucagon production.
2. increased glucagon production.
3. glycogen being released into the blood.
4. increased glucagon production followed by glucose release from the liver.
When dehydration occurs, the response of the human body would be that:
1. More ADH is secreted.
2. Urine will become less concentrated.
3. Diuretic hormone will be secreted.
4. The urine output will increase.
One of the reasons for iodine to be a part of a balanced diet would be:
| 1. | Iodine is needed for an enzyme that facilitates the synthesis of thyrotropin-releasing hormone (TRH). |
| 2. | The thyroid gland cannot produce thyroxine without iodine, which leads to the goiter condition. |
| 3. | Iodine is necessary for the proper functioning of the thyroid, adrenals and pancreas. |
| 4. | The iodine is needed for positive feedback to the hypothalamus and the anterior pituitary to stimulate the thyroid to produce more thyroxine. This in turn prevents the goiter condition. |
Both cortisol and adrenaline are secreted in response to stress. Which of the following statements is true for both of these hormones?
1. They are secreted within seconds of the onset of the stress.
2. They are secreted by adrenal cortex.
3. Their secretion is stimulated by adrenocorticotropin.
4. They act to increase blood glucose.
GnRH, a hypothalamic hormone, needed in reproduction, acts on the
1. anterior pituitary gland and stimulates secretion of LH and oxytocin
2. anterior pituitary gland and stimulates secretion of LH and FSH
3. posterior pituitary gland and stimulates secretion of oxytocin and FSH
4. posterior pituitary gland and stimulates secretion of LH and relaxin
The posterior pituitary gland is not a ‘true’ endocrine gland because
1. it is provided with a duct
2. it only stores and releases hormones
3. it is under the regulation of hypothalamus
4. it secretes enzymes
Select the answer which correctly matches the endocrine gland with the hormone it secretes and its function/deficiency symptom
| Endocrine gland | Hormone | Function/deficiency symptoms | |
| 1. | Anterior pituitary | Oxytocin | Stimulates uterus contraction during child birth |
| 2. | Posterior pituitary | Growth Hormone (GH) | Over-secretion stimulates abnormal growth |
| 3. | Thyroid gland | Thyroxine | Lack of iodine |
| 4. | Corpus luteum | Testosterone | Stimulates spermatogenesis |
Match the source gland with its respective hormone as well as the function.
| Source gland | Hormone | Function | |
| 1. | Posterior pituitary | Vasopressin | Stimulates resorption of water in the distal tubules in nephron |
| 2. | Corpus luteum | Oestrogen | Supports pregnancy |
| 3. | Thyroid | Thyroxine | Regulates blood calcium level |
| 4. | Anterior pituitary | Oxytocin | Contraction of uterus muscles during child birth |
Select the correct statement about hormones and their actions.
| 1. | Parathyroid hormone increases absorption of the body. |
| 2. | Insulin and glucagon help to maintain blood sugar levels. |
| 3. | Old aged people have weak immunity due to increased activity of thymus. |
| 4. | Osteoporosis in women occurs due to increased levels of oestrogens. |
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