Q. No.All the following are common second messengers involved in hormonal actions except:
1. Cyclic adenosine monophosphate
2. Inositol phosphate
3. Prostaglandins
4. Calcium
1. Cyclic adenosine monophosphate
2. Inositol phosphate
3. Prostaglandins
4. Calcium
All the following statements regarding parathyroid hormone are correct except:
| 1. | It is a peptide hormone |
| 2. | It is regulated by a tropin secreted by anterior pituitary |
| 3. | It stimulates the process of bone resorption or demineralization |
| 4. | It stimulates calcium absorption from the digested food |
Hormones which interact with intracellular receptors:
1. generate second messengers
2. depolarize the membrane of the target cells
3. stop the enzymatic actions of membrane proteins
4. regulate gene expression
1. Graves’ disease
2. Addison’s disease
3. Conn’s syndrome
4. Diabetes mellitus
The hormones of ‘flight or fight’ response:
1. are secreted by the zona glomerulosa of adrenal cortex
2. are commonly called as catecholamines
3. are released slowly over a period of time when required
4. do not act via a second messenger system
Identify the incorrect statement regarding thyroid gland:
| 1. | The two lobes are connected by an isthmus |
| 2. | Iodine is essential for synthesis of T3 and T4 by thyroid |
| 3. | The follicles are lined by cuboidal epithelium |
| 4. | All hormones secreted by thyroid are iodothyronines |
Identify the correct statements from the following:
| I: | ANF is secreted by the right atrium of heart and causes vasodilation |
| II: | Erythropoietin is secreted by kidney and stimulates bone marrow to produce RBC |
| III: | Insulin-like growth factors are secreted by liver and play an important role in childhood growth, and has anabolic effects in adults |
| 1. | Only I and II | 2. | Only I and III |
| 3. | Only II and III | 4. | I, II and III |
What would not be true for pancreas?
| 1. | The exocrine pancreatic acini secrete digestive enzymes |
| 2. | The endocrine islets of Langerhans constitute about 50% of the gland |
| 3. | The hormones secreted by endocrine pancreas are peptides |
| 4. | Alpha cells secrete glucagon, beta cells secrete insulin and delta cells secrete somatostatin |
Which pair of hormones will both bind to membrane bound receptors located on its target cells?
1. Epinephrine and thyroxine
2. Calcitonin and glucagon
3. Estradiol and triiodothyronine
4. Adrenaline and aldosterone
Diabetes insipidus, characterized by water loss and dehydration, is caused by:
1. Hyposecretion of ADH
2. Hypersecretion of ADH
3. Hyposecretion of insulin
4. Hypersecretion of insulin
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