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Question
Why do we hiccup and cough sometimes when we swallow food?
Solution
Normally, the entry of food into the windpipe is prevented by a flap-like structure called Epiglottis. But when we eat in a hurry, the flab gets lesser time to close the windpipe. Thus some of the food particles enter into the windpipe. It creates a hindrance in the movement of air in the windpipe and results in coughing or hiccup.
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RELATED QUESTIONS
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.
Name the hormone responsible for the following function:
Increased reabsorption of water in the kidneys
What is a hormone?
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 |
Which statement is not for a hormone?
Which of the following hormone is not secreted under the influence of pituitary gland?
Comment on homeostasis.
Hormones are known as chemical messenger. Justify.
Comment on the functions of adrenalin.
Define the following term:
Endocrine system
