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प्रश्न
Write the role of oestrogen in ovulation?
उत्तर
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.
संबंधित प्रश्न
Define Endocrine gland
| Hormones | Target gland |
| Melanotrophin (MSH | ______ |
Give an example of hyperglycemic hormone.
Give an example of a progestational hormone.
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 |
Fill in the blank:
Hormones are produced by ____________.
Draw an outline figure of the human body and show the location of different endocrine glands.
Mention any two differences between a hormone and an enzyme.
Compare the hormonal response with the nervous response with respect to their speed, transmission and the general nature of changes brought about.
Name the following:
The largest endocrine gland
Define the following:
Hypersecretion
Name the hormone responsible for the following function:
Regulates the functioning of the male and female reproductive organs
Name the hormone responsible for the following function:
Increased reabsorption of water in the kidneys
Choose the correct answer:
An organ, tissue or cell where a hormone produces its effects is known as __________
What is the chemical nature of hormone?
Is the following gland an exocrine or an endocrine gland?
Salivary gland
Is the following gland an exocrine or an endocrine gland?
Liver
Complete the table given below by filling in the blanks numbered 1 to 8.
| Gland | Hormone Secreted | Effect on Body |
| 1 | 2 | Regulates basal metabolism |
| Pancreas (β-cells) | 3 | 4 |
| 5 | 6 | Increases heart beat |
| 7 | Thyroid stimulating hormone | 8 |
Give the Technical Term: Name the blood vessels which transport hormones from the endocrine glands to the various parts of the body.
Fill in the Blanks:
______ is called father of endocrinology.
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
Study the diagram given below and then answer the questions that follow:
 |
- Name the cells of the pancreas that produce (1) glucagon (2) insulin.
- State the main function of (1) glucagon and (2) insulin.
- Why is the pancreas referred to as an exo-endocrine gland?
- Why is insulin not given orally but is injected into the body?
- What is the technical term for the cells of the pancreas that produce endocrine hormones?
- Where in the body is the pancreas located?
Given alongside are the diagrammatic sketches of some endocrine glands. Observe the figures and answer the following questions:
(i) Label the parts numbered 1 to 5.
(ii) Name the hormones secreted by (2) and (5).
(iii) Which chemicals in our body are greatly affected by hormones?
(iv) What is the chemical nature of hormones?
(v) Name the elements related to the functioning of hormones secreted by the structure (2) and (5).
Choose the Odd One Out
Choose the Odd One Out
Which of the following hormone is not secreted under the influence of pituitary gland?
Spermatogenesis in mammalian testes is controlled by ______.
Serum calcium level is regulated by ______.
Iodised salt is essential to prevent ______.
Which of the following statement about sex hormones is correct?
In humans, the life processes are controlled and regulated by ____________.
______ gland is located in the neck region.
Which of the following organs in mammals does not consist of a central meduallary’ region surrounded by a cortical region?
Which one of the following statements is correct?
Choose the odd one out from series and write the category of the remaining terms:
