(d) Thymus secretes a peptide hormone called "thymosins" that imparts resistance to diseases. It helps in differentiation of T-lymphocytes, which provide cell mediated immunity.It promotes production of antibodies for humoral immunity.
NCERT Page-335 / N-243
Chemical Coordination and Integration
280265
Which statement regarding PTH is correct?
1 It is a peptide hormone.
2 It stimulates bone resorption.
3 It is hypercalcemic hormone.
4 All of the above.
Explanation:
(d) All the statements are correct regarding PTH. PTH (Parathyroid Hormone), also called Collip's hormone, is secreted from the parathyroid gland. It is responsible for the following: (i) Release of calcium by ones into the blood streams.
(ii) Absorption of food by the intestine.
(iii) Conservation of calcium by the kidneys.
NCERT Page-335 / N-243
Chemical Coordination and Integration
280266
Which of the following is correct for thyrocalcitonin?
1 Produced by parathyroid and decreases$\text{C}{{\text{a}}^{++}}$in ECF.
2 Produced by thyroid and regulates the blood calcium levels.
3 Produced by parathyroid and increases$\text{C}{{\text{a}}^{++}}$in ECF.
4 Produced by thyroid and increases$\text{C}{{\text{a}}^{++}}$in ECF.
Explanation:
(b) Thyrocalcitonin (TCT) is secreted by parafollicular cells of thyroid gland. It is a protein hormone that regulates (lowers) the blood calcium levels in blood plasma.
NCERT Page-335 / N-243
Chemical Coordination and Integration
280267
Which of the following endocrine glands grows to the maximum size at puberty and then diminishes gradually?
1 Thymus
2 Pituitary
3 Thyroid
4 Adrenal
Explanation:
(a) Thymus starts functioning in the embryonic stage itself, becomes active during childhood and undergoes regression and gradually stops functioning in old individuals. So, production of thymosins decreases. As a result, immune responses of old persons become weak.
(d) Thymus secretes a peptide hormone called "thymosins" that imparts resistance to diseases. It helps in differentiation of T-lymphocytes, which provide cell mediated immunity.It promotes production of antibodies for humoral immunity.
NCERT Page-335 / N-243
Chemical Coordination and Integration
280265
Which statement regarding PTH is correct?
1 It is a peptide hormone.
2 It stimulates bone resorption.
3 It is hypercalcemic hormone.
4 All of the above.
Explanation:
(d) All the statements are correct regarding PTH. PTH (Parathyroid Hormone), also called Collip's hormone, is secreted from the parathyroid gland. It is responsible for the following: (i) Release of calcium by ones into the blood streams.
(ii) Absorption of food by the intestine.
(iii) Conservation of calcium by the kidneys.
NCERT Page-335 / N-243
Chemical Coordination and Integration
280266
Which of the following is correct for thyrocalcitonin?
1 Produced by parathyroid and decreases$\text{C}{{\text{a}}^{++}}$in ECF.
2 Produced by thyroid and regulates the blood calcium levels.
3 Produced by parathyroid and increases$\text{C}{{\text{a}}^{++}}$in ECF.
4 Produced by thyroid and increases$\text{C}{{\text{a}}^{++}}$in ECF.
Explanation:
(b) Thyrocalcitonin (TCT) is secreted by parafollicular cells of thyroid gland. It is a protein hormone that regulates (lowers) the blood calcium levels in blood plasma.
NCERT Page-335 / N-243
Chemical Coordination and Integration
280267
Which of the following endocrine glands grows to the maximum size at puberty and then diminishes gradually?
1 Thymus
2 Pituitary
3 Thyroid
4 Adrenal
Explanation:
(a) Thymus starts functioning in the embryonic stage itself, becomes active during childhood and undergoes regression and gradually stops functioning in old individuals. So, production of thymosins decreases. As a result, immune responses of old persons become weak.
(d) Thymus secretes a peptide hormone called "thymosins" that imparts resistance to diseases. It helps in differentiation of T-lymphocytes, which provide cell mediated immunity.It promotes production of antibodies for humoral immunity.
NCERT Page-335 / N-243
Chemical Coordination and Integration
280265
Which statement regarding PTH is correct?
1 It is a peptide hormone.
2 It stimulates bone resorption.
3 It is hypercalcemic hormone.
4 All of the above.
Explanation:
(d) All the statements are correct regarding PTH. PTH (Parathyroid Hormone), also called Collip's hormone, is secreted from the parathyroid gland. It is responsible for the following: (i) Release of calcium by ones into the blood streams.
(ii) Absorption of food by the intestine.
(iii) Conservation of calcium by the kidneys.
NCERT Page-335 / N-243
Chemical Coordination and Integration
280266
Which of the following is correct for thyrocalcitonin?
1 Produced by parathyroid and decreases$\text{C}{{\text{a}}^{++}}$in ECF.
2 Produced by thyroid and regulates the blood calcium levels.
3 Produced by parathyroid and increases$\text{C}{{\text{a}}^{++}}$in ECF.
4 Produced by thyroid and increases$\text{C}{{\text{a}}^{++}}$in ECF.
Explanation:
(b) Thyrocalcitonin (TCT) is secreted by parafollicular cells of thyroid gland. It is a protein hormone that regulates (lowers) the blood calcium levels in blood plasma.
NCERT Page-335 / N-243
Chemical Coordination and Integration
280267
Which of the following endocrine glands grows to the maximum size at puberty and then diminishes gradually?
1 Thymus
2 Pituitary
3 Thyroid
4 Adrenal
Explanation:
(a) Thymus starts functioning in the embryonic stage itself, becomes active during childhood and undergoes regression and gradually stops functioning in old individuals. So, production of thymosins decreases. As a result, immune responses of old persons become weak.
(d) Thymus secretes a peptide hormone called "thymosins" that imparts resistance to diseases. It helps in differentiation of T-lymphocytes, which provide cell mediated immunity.It promotes production of antibodies for humoral immunity.
NCERT Page-335 / N-243
Chemical Coordination and Integration
280265
Which statement regarding PTH is correct?
1 It is a peptide hormone.
2 It stimulates bone resorption.
3 It is hypercalcemic hormone.
4 All of the above.
Explanation:
(d) All the statements are correct regarding PTH. PTH (Parathyroid Hormone), also called Collip's hormone, is secreted from the parathyroid gland. It is responsible for the following: (i) Release of calcium by ones into the blood streams.
(ii) Absorption of food by the intestine.
(iii) Conservation of calcium by the kidneys.
NCERT Page-335 / N-243
Chemical Coordination and Integration
280266
Which of the following is correct for thyrocalcitonin?
1 Produced by parathyroid and decreases$\text{C}{{\text{a}}^{++}}$in ECF.
2 Produced by thyroid and regulates the blood calcium levels.
3 Produced by parathyroid and increases$\text{C}{{\text{a}}^{++}}$in ECF.
4 Produced by thyroid and increases$\text{C}{{\text{a}}^{++}}$in ECF.
Explanation:
(b) Thyrocalcitonin (TCT) is secreted by parafollicular cells of thyroid gland. It is a protein hormone that regulates (lowers) the blood calcium levels in blood plasma.
NCERT Page-335 / N-243
Chemical Coordination and Integration
280267
Which of the following endocrine glands grows to the maximum size at puberty and then diminishes gradually?
1 Thymus
2 Pituitary
3 Thyroid
4 Adrenal
Explanation:
(a) Thymus starts functioning in the embryonic stage itself, becomes active during childhood and undergoes regression and gradually stops functioning in old individuals. So, production of thymosins decreases. As a result, immune responses of old persons become weak.
