The definition of hormone describes them as having all the following features except:
1. non-nutrient chemicals
2. intra-cellular messengers
3. produced in trace amounts
4. act on distant target organ
Assertion (A): | Apart from the organised endocrine glands, hormones are secreted by other parts of the human body as well. |
Reason (R): | Hormone is any non-nutrient chemical which acts as intercellular messenger and is produced in trace amounts. |
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. |
I: | The glands located in the region A play a very important role in calcium homeostasis. |
II: | The gland B increases in size from puberty to adulthood and then decreases in size in old age. |
III: | C is both an endocrine and an exocrine gland. |
IV: | D is kidney and does not produce any hormone. |
A | B | |
1. | Anterior pituitary | Posterior pituitary |
2. | Superior colliculus | Inferior colliculus |
3. | Pineal gland | Pituitary gland |
4. | Broca’s area | Sella turcica |
I: | A are hypothalamic neurons that produce ADH and Oxytocin |
II: | B is the infundibulum or pituitary stalk |
III: | C is a portal vein |
IV: | D is pars distalis |
V | E is pars nervosa |
1. | I and II only | 2. | I, II and III only |
3. | I and III only | 4. | II and III only |
Statement I: | Hormones act on all the cells in the human body. |
Statement II: | Hormones are intercellular chemical messengers transported by blood throughout the body. |
1. | Both Statement I and Statement II are correct |
2. | Both Statement I and Statement II are incorrect |
3. | Statement I is correct but Statement II is incorrect |
4. | Statement I is incorrect but Statement II is correct |