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प्रश्न
Comment on Acini of thyroid gland.
उत्तर
The thyroid gland is a bilobed endocrine gland. Each lobe is made up of many lobules. The lobules consist of follicles called acini. Each acinus is lined with glandular, cuboidal, or squamous epithelial cells. The lumen of the acinus is filled with colloid, a thick glycoprotein mixture consisting of thyroglobulin molecules.
संबंधित प्रश्न
Define the following:
Hormone
Define Endocrine gland
Diagrammatically indicate the location of the various endocrine glands in our body.
| Hormones | Target gland |
| Corticotrophin (ACTH) | ______ |
| Hormones | Target gland |
| Gonadotrophins (LH, FSH) | ______ |
Give an example of hyperglycemic hormone.
Give an example of gonadotrophic hormones.
add a note on deficiency of thyroxine.
Exophthalmic goitre is caused due to the overactivity of ______.
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.
Mention three important differences between the action of hormones and that of nerves in the regulatory mechanism of our body.
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?
Give the special function of the following:
Adrenocorticotrophic hormone
Define the following:
Exocrine gland
Which glands are responsible for the following disease?
(i) Goitre (ii) Diabetes mellitus (iii) Gigantism
(iv) Diabetes insipidus (v) Cretinism (vi) Exophthalmic goiter
Name the hormone responsible for the following function:
Ossification of bones
Choose the correct answer:
Which one of the following is not an endrocine gland?
Choose the correct answer:
An organ, tissue or cell where a hormone produces its effects is known as __________
What do you mean by endocrine system?
What is a hormone?
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 two hormones secreted by the alimentary canal.
Give the Technical Term: Name a hormone which controls developments of male secondary sexual characters.
Give the Technical Term: Name the structure which produces testosterone.
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.
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
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.
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
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 |
Predict the effects of removal of pancreas from the human body.
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 |
