Q. 145.0( 1 Vote )

Here are a few statements about the endocrine system in man. State whether each of them is true or false. If the statement is false write the correct statement.

i) The endocrine system controls and co-ordinates the physical process of growth, reproduction, and sustenance of life.

ii) Endocrine glands are duct bearing glands which secrete chemical substances called hormones.

iii) The pancreas is a dual gland.

iv) Malfunctioning of the thymus gland causes goiter.

Answer :

(i) Given statement is true because endocrine system is responsible for chemical coordination and through this chemical coordination, they controls and co-ordinates the physical process of growth, reproduction, and sustenance of life.

(ii) Given statement is false as endocrine glands are ductless glands. They do not bear ducts and secrete their secretion into the blood. So, the correct statement is as follows:


Endocrine glands are ductless glands which secrete chemical substances called hormones.


(iii) Given statement is true as pancreas exhibits both exocrine and endocrine nature. It exhibits exocrine nature by secreting enzymes chymotrypsin, lipase from acinar cells (exocrine part) and secrete hormone insulin and glucagon from Islets of Langerhans (endocrine part).


(iv) Given statement is false, as thymus is in no way related to the goitre. Goitre is caused due to deficiency of iodine due to which swelling of thyroid glands take place. So, correct statement is as follows:


Malfunctioning of the thyroid gland causes goitre.


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RELATED QUESTIONS :

Copy and complete the following table:

Tamil Nadu Board - Science

Here are a few statements about the endocrine system in man. State whether each of them is true or false. If the statement is false write the correct statement.

i) The endocrine system controls and co-ordinates the physical process of growth, reproduction, and sustenance of life.


ii) Endocrine glands are duct bearing glands which secrete chemical substances called hormones.


iii) The pancreas is a dual gland.


iv) Malfunctioning of the thymus gland causes goiter.

Tamil Nadu Board - Science

Match the following:

Tamil Nadu Board - Science