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If you stand to make your maiden speech before a large audience, your mouth dries up and heart rate increases. What brings about these changes?

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Question

If you stand to make your maiden speech before a large audience, your mouth dries up and heart rate increases. What brings about these changes?

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Solution

Adrenalin secreted by the adrenal medulla brings about these feelings.

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Chapter 12: The Endocrine System - Review Questions [Page 167]

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Selina Concise Biology [English] Class 10 ICSE
Chapter 12 The Endocrine System
Review Questions | Q C. 6. | Page 167

RELATED QUESTIONS

Given below is the outline of the human body showing the important glands:

  1. Name the glands marked 1 to 4.
  2. Name the hormone secreted by part 2. Give one important function of this hormone.
  3. Name the endocrine part of the numbered 3.
  4. Why is the part labelled 1 called the master gland? Which part of the forebrain controls the gland labelled 1?
  5. Name the gland that secretes the ‘emergency hormone’.

Identify the odd one in each set : Oxytocin, Insulin, Prolactin, Progesterone


Give technical terms for Group of hormones which influence other endocrine glands to produce hormones


Match the items given in Column A with the most appropriate ones in Column B and rewrite the correct matching pairs

  Column A   Column B
1 Cretinism a Hypersecretion of the adrenal cortex
2 Diabetes insipidus b Hyposecretion of Thyroxine
3 Exophthalmic Goitre c Hyposecretion of growth hormone
4 Adrenal virilism d Hyposecretion of Vasopressin
5 Dwarfism e Hyposecretion of the adrenal cortex
    f Hypersecretion of Growth hormone
    g Hypersecretion of thyroxine

Our hair stands on their ends during fear.


Give the Technical Term: Name the gland in the body that secretes the so-called ‘Emergency hormone’.


Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:

Adrenal medulla produces adrenaline.


The steroid responsible for balance of water and electrolytes in our body is ______.


Cortex and medulla are the two regions of ______.


Match the terms given in column A with those in column B.

  Column A   Column B
(a) Adrenaline (i) Hypoglycemia
(b) Adrenal virilism (ii) Hyperglycemia
(c) Addison's disease (iii) Mental retardation
(d) Acromegaly (iv) Eyes are protruded
(e) Cushing's syndrome (v) Excessive growth of bones in face
    (vi) Emergency hormone
    (vii) Masculine characters

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