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प्रश्न
Pineal gland is an endocrine gland, write its role.
उत्तर
The pineal gland or epiphysis cerebri or conarium is located behind the third ventricle of the brain. It is formed of parenchymal cells and interstitial cells. It secretes the hormone, melatonin.
It plays a central role in the regulation of the circadian rhythm of our body and maintains a normal sleep-wake cycle. It also regulates the timing of the sexual maturation of gonads. It also influences metabolism, pigmentation, menstrual cycle, and defense mechanism of our body.
संबंधित प्रश्न
Define the following:
Hormone
Diagrammatically indicate the location of the various endocrine glands in our body.
Give an example of a blood pressure lowering hormone.
Give an example of androgens.
Fill in the blank:
Hormones are produced by ____________.
Draw an outline figure of the human body and show the location of different endocrine glands.
A gland having endocrine as well as exocrine function is
Match the items of column I with those of column II
| Column I | Column II | ||
| 1 | β (beta) cells of islets of Langerhans |
a | condition due to undersecretion of thyroxine in adults |
| 2 | Thyroid | b | Glucocorticoids |
| 3 | Cretinism | c | Exophthalmic goitre |
| 4 | Addison's disease | d | Increases heart beat |
| 5 | Hypothyroidism | e | Thyroxine |
| 6 | Myxoedema | f | Adrenal cortex |
| 7 | Adrenaline Under secretion of thyroxine in a child |
h | Under secretion of thyroxine in a child |
Mention which of the statements are true (T) and which are false (F). Give reason in support of your answer.
There are two kinds of diabetes (mild and severe) related with two different hormones.
Given alongside is an outline diagram of human body showing position of certain organs.
 |
- Name the parts numbered 1 to 4.
- What is common to all these parts in regard to the nature of their functions?
- Name the nutrient element which is essential for the normal working of part 2.
Choose the correct answer:
Excess secretion of growth hormone causes ____________
Why are hormones called ‘chemical messengers’?
Given below is a table consisting of a set of items belonging to a common category. Complete the table by filling in the category and the odd one in the blanks
| Set | Category | Odd one |
| Adrenaline, Penicillin, Insulin, Thyroxin | __________ | __________ |
| Vasopressin, growth hormone, TSH, ACTH, FSH | __________ | __________ |
Hormones are called ‘chemical messengers’.
Organs like the stomach and intestine are also endocrine glands. Why?
Differentiate: Hormones and Enzyme.
Differentiate: Nervous control and Hormonal control.
Give the Technical Term: Name the glands which secrete the following hormone: Progesterone
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Hormones are chemically protein.
Place the words at the bottom of the page next to the number that shows the location of the Endocrine Glands.
(1) ________
(2) ________
(3) ________
(4) ________
(5) ________
(6) ________
(7) ________
(8) ________
(9) ________
Pancreas Hypothalamus Pituitary Parathyroid Ovaries Adrenal Thyroid Thymus Testes
State the Function
Oxytocin
Choose the Odd One Out.
Choose the Odd One Out
Choose the Odd One Out
Choose the Odd One Out
Choose the Odd One Out
Which of the following are exclusive endocrine glands?
Which of the following hormone is not secreted under the influence of pituitary gland?
Serum calcium level is regulated by ______.
The structure which connects the hypothalamus with anterior lobe of pituitary gland is the ______.
which of the given option shows all wrong statements for thyroid gland
Statements
- It inhibits process of RBC formation
- It helps in maintenance of water and electrolytes
- Its more secretion can reduce blood pressure
- It Stimulates osteoblast
Differentiate hyperglycemia from hypoglycemia.
Comment on the functions of adrenalin.
______ gland is located in the neck region.
Select the right match of endocrine gland and their hormone among the options given below
| Column I | Column II |
| A. Pineal | i. Epinephrine |
| B. Thyroid | ii. Melatonin |
| C. Ovary | iii. Estrogen |
| D. Adrenal medulla | iv. Tetraiodothyronine |
Acromegaly is caused by ______.
Distinguish between Diabetes mellitus and Diabetes insipidus (endocrine gland concerned).
