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प्रश्न
Hormones are known as chemical messenger. Justify.
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उत्तर
Hormones are released into the bloodstream and circulated as chemical signals. These act specifically on certain organs or tissues called target organs or tissues. These speed up or slow down or alter the activity of target tissues or organs. Hence they are known as chemical messengers.
संबंधित प्रश्न
Draw an outline figure of the human body and show the location of different endocrine glands.
Identify the ODD term in each set and name the CATEGORY to which the remaining three belong :
Example : glucose, starch, cellulose, calcium
Odd term : calcium
Category : others are different types of carbohydrates
Addison’s disease, Cushing’s Syndrome, Acromegaly, Leukemia
The diagram give below represents an endocrine gland in the human body. Study the diagram and answer the following questions: 
Explain the term ‘Hormone’. What is the role of Tropic hormones in the human body?
Name the hormones secreted by the following glands:
(i) Anterior pituitary
(ii) Testes
(iii) Ovary
(iv) Adrenal cortex
(v) Pancreas
Choose the correct answer:
Which one of the following is not an endrocine gland?
Name the different endocrine glands found in the body of man.
Is the following gland an exocrine or an endocrine gland?
Liver
The release of progesterone in the urine is an indication of pregnancy. Explain.
Differentiate: Acromegaly and Myxedema.
Name the Following: Hormone secreted by corpus luteum.
Give the Technical Term: The structure which controls the master gland.
Give the Technical Term: Name the glands which secrete the following hormone: Relaxin
Give the Technical Term: Name the hormones which lead to the following condition: Growth of beard in women
The sketch below shows a certain condition in an individual:
(i) Name the condition.
(ii) What is the underlying cause of this condition?
(iii) Name two other conditions that could have resulted due to a similar cause.
(iv) Which hormone is required for iodine synthesis?
(v) Where is the thyroid gland located?
(vi) The hormone secreted by the thyroid gland is controlled from which hormone?
State the Function
Thyroxin
Choose the Odd One Out
Which of the following hormone is not secreted under the influence of pituitary gland?
Comment on Acini of thyroid gland.
Write a detailed account of gastro intestinal tract hormones.
Which of the following organs in mammals does not consist of a central meduallary’ region surrounded by a cortical region?
