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Question
Comment on Acini of thyroid gland.
Solution
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.
RELATED QUESTIONS
| Hormones | Target gland |
| Thyrotrophin (TSH) | ______ |
| Hormones | Target gland |
| Corticotrophin (ACTH) | ______ |
| Hormones | Target gland |
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| 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 |
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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 |
How do endocrine glands differ from other glands?
Mention any two differences between a hormone and an enzyme.
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:
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 are the general properties of hormones?
Complete the following:
| Gland/Organ | Hormone | Function |
| (i) Stomach | __________ | __________ |
| (ii) Parathyroid | __________ | __________ |
| (iii) __________ | __________ | Lowers blood sugar level. |
| (iv) Adrenal medulla | __________ | __________ |
| (v) Pancreas (Alpha cells) | __________ | __________ |
| (vi) Testes | __________ | __________ |
Hormones are called ‘chemical messengers’.
Differentiate: Insulin and Glucagon.
Give the Technical Term: What are the substances that control the growth and development in animals?
Give the Technical Term: Name the blood vessels which transport hormones from the endocrine glands to the various parts of the body.
Give the Technical Term: Name two hormones secreted by the alimentary canal.
Fill in the Blanks:
The glands with ducts are called ______.
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
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).
State the Location
Prostate gland
State the Function
Thyroxin
State the Function
Oestradiol
Choose the Odd One Out
Choose the Odd One Out.
Choose the Odd One Out
Choose the Odd One Out
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Leydig cells are meant for:
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Comment on homeostasis.
Predict the effects of removal of pancreas from the human body.
Write a detailed account of gastro intestinal tract hormones.
Which endocrine gland is present in males but not in females?
