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Question
Write the role of oestrogen in ovulation?
Solution
Oestrogen is the ovarian hormone secreted during the proliferation phase of menstrual cycle from the 6th day to 14th day of the cycle. On 14th day of the cycle, under the influence of uteinizing hormone, ovum is released from the griffin follicles. This process is known as ovulation.
RELATED QUESTIONS
| Hormones | Target gland |
| Gonadotrophins (LH, FSH) | ______ |
_______ maintains basic metabolic rate.
(A) Thyroxine
(B) ADH
(C) GH
(D) Oxytocin
In the table given below, fill in the blanks by naming endocrine glands, the hormones they secrete, and the function they perform, in a normal person.
| S.No. | Name of the gland | produced | Function |
| 1. | Thyroid | ||
| 2. | Insulin | ||
| 3. | Preparing the body for action | ||
| 4. | (i) Growth hormone (ii) Thyroid-stimulating hormone |
Define the following:
Endocrine glands
A gland having endocrine as well as exocrine function is
Choose the odd one out from each series
The glands – thyroid, adrenal, pituitary, prostate
…………………………………………
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.
Harmones ‘obey’ the commands like ‘enough, slow down or ‘two little, speed up’
Mention any two differences between a hormone and an enzyme.
Name the following:
The largest endocrine gland
What is the chemical nature of hormone?
Name the different endocrine glands found in the body of man.
Differentiate: Hormones and Enzyme.
Differentiate: Insulin and Glucagon.
Give the Technical Term: The structure which controls the master gland.
Give the Technical Term: Name the hormones which lead to the following condition: Growth of beard in women
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Hormones are produced by endocrine gland.
Some of the endocrine glands are shown by the guidelines.
(i) Name the glands 1 to 5.
(ii) Name any two endocrine glands which are not shown in the diagram.
(iii) Name one gland which is both exocrine and endocrine.
State the Location
Prostate gland
State the Function
Thyroxin
Choose the Odd One Out
Choose the Odd One Out
Column ‘II’ is a list of items related to ideas in Column ‘I’. Match the term in Column ‘II’ with a suitable idea given in Column ‘I’.
| Column A | Column B |
| (i) Pituitary | (a) produces male sex characteristics |
| (ii) Ovaries | (b) decreases blood sugar level |
| (iii) Thyroid | (c) increases heart and breathing rate raises blood pressure |
| (iv) Thymus | (d) produces female sex characteristics |
| (v) Adrenals | (e) is known as emergency hormone |
| (vi) Hypothalamus | (f) regulates the level of calcium and phosphorus |
| (vii) Pancreas | (g) increases the rate of metabolism |
| (viii) Testes | (h) maintains the level of calcium |
| (ix) Parathyroid | regulates the amount of water excreted in the urine. |
| (x) Cretinism | (j) simulates skeletal growth |
| (xi) Diabetes mellitus | (k) regulates the activities of other glands |
| (xii) Insulin shock | (l) stimulates the development of male and female sex organs |
| (xiii) Gigantism | (m) Shortage of glucose in the blood. |
| (xiv) Enlargement of breasts in adult males | (n) Over-secretion of growth hormone |
| (xv) Exophthalmic goiter | (o) Excess of glucose in the blood |
| (xvi) Acromegaly | (p) Over-secretion of thyroxin |
| (xvii) Addison’s disease | (q) Dwarfism and mental retardation |
| (xviii)Cretinism | (r) Over-secretion of cortical hormones |
| (xix) Dwarfism | (s) Under-secretion of the adrenal cortex |
| (xx) Adrenalin | (t) Under-secretion of thyroxin in children |
| (xxi) Vasopressin | (u) Over-secretion of growth hormones in adults |
Leydig cells are meant for:
Which organ acts a temporary endocrine gland in females?
A pregnant female delivers a baby who suffers from stunted growth, mental retardation, low intelligence quotient and abnormal skin. This is the result of ______.
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
Hormones are known as chemical messenger. Justify.
Growth hormone is important for normal growth. Justify the statement.
Pineal gland is an endocrine gland, write its role.
Enumerate the role of kidney as an endocrine gland.
Write a detailed account of gastro intestinal tract hormones.
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 |
Given below is the figure showing the human urinary system with structures labelled A to D. Select the option which correctly identifies them and gives their function.
Acromegaly is caused by ______.
Choose the odd one out from series and write the category of the remaining terms:
