The Growth Hormone and Its Importance

Q.

Which of the following statements about growth hormone are incorrect?

A. It acts to promote the growth of bones and organs.
B. Stimulate the adrenal gland.
C. It acts on bone, cartilage, muscle, fat, liver and heart.
D. Acts to maintain blood pressure.

1. A and B

2. A and C

3. B and D

4. All are correct

Q. The master gland of the endocrine system is __________.

1. hypothalamus
2. pituitary
3. adrenal
4. thyroid

Q. Mention whether the following statements are True (T) or False (F). If false, rewrite the correct word (not words) by striking out the single wrong one. ​

(i) Pituitary is of the size of a lemon

1. True
2. Flase

Q. Explain growth hormone in detail and diseases caused by its excess or lack of secretion.

Q. Thyroxine hormone regulates the of the body.

1. calcium absorption
2. blood glucose
3. water absorption
4. basal metabolism

Q.

Name the plant hormones which are responsible for the following effects :

(d) closing of stomata

Q. During the growth period, release of too much growth hormone can lead to

1. Cretinism
2. Gigantism
3. Acromegaly
4. Dwarfism

Q.

Aldosterone is a Glucocorticoid while cortisol and corticosterone are examples of Mineralocorticosteroids.

1. False

2. True

Q. Dwarfism results due to: ​

1. less secretion of growth hormone ​
2. excessive secretion of thyroxine hormone ​
3. less secretion of adrenaline hormone ​
4. excessive secretion of growth hormone ​

Q. Which of the following statements concerning growth hormone (GH) are correct?

1. Excess growth hormone can affect both adults and children
2. The production of growth hormone is stimulated by GH-RH from the hypothalamus
3. Deficiency of growth hormone in children causes dwarfism
4. The deficiency of growth hormone affects only children; it has no effect on adults

Q.

___ is a condition in which there is excessive secretion of aldosterone, which disturbs the balance of sodium, potassium, and water in the blood and so leads to high blood pressure.

1. Aldosteronism

2. Myxoedema

3. Cushing's syndrome

4. Addison's disease

Q. Anterior lobe of pituitary gland secretes

1. STH, GH and TSH
2. TSH, ADH and prolactin
3. FSH, GH and LH
4. ACTH, TSH and oxytocin

Q. Which of the following regulates the reabsorption of salts from glomerular filtrate?

1. Oxytocin
2. Glucocorticoides
3. Vassopressin
4. Mineralocorticoides

Q. Match the following levels of growth hormone (GH) with their effects

1. Release of GH
2. Dwarfism
3. Acromegaly
4. Gigantism

Q. A and B are the two systems of control and coordination in the human body. The messages In system A are transmitted in the form of chemical substances C which travel comparatively slowly through the blood stream. The substances C are made in tissues D present in the head and trunk of human body. The messages in system B are transmitted very quickly in the form of electrical impulses through fibres E. The effect of messages transmitted by system B usually lasts for a much shorter time as compared to those transmitted by system A.
(b) Name the chemical substance C.

Q.

The diseases related to the synthesis of Factor VIII is___

Q. Susan’s father feels very tired and frequently urinates. After clinical diagnosis he was advised to take an injection daily to maintain his blood glucose level. What would be the possible cause for this? Suggest preventive measures.

[Review question: Pg. No: 241]

Q. Which glands are responsible for the following disease?
(i) Goitre
(ii) Diabetes mellitus
(iii) Gigantism
(iv) Diabetes insipidus
(v) Cretinism
(vi) Exophthalmic goitre

Q. Acromegaly is caused by:

1. Excess of STH
2. Excess of thyroxin
3. Deficiency of thyroxin
4. Excess of adrenalin

Q.

Identify the labelled parts.

1. 22 pairs of chromosomes.

2. 48 chromosomes.

3. 40 chromosomes.

4. 23 pairs of chromosomes.

Q. Excess secretion of growth hormone leads to dwarfism.

1. True
2. False

Q.

Hypersecretion of growth hormone by pituitary results in

1. Dwarfism

2. Gigantism

3. Cretinism

4. Myxedema

Q. Excess secretion of growth hormone leads to dwarfism.

1. True
2. False

Q. Which of the following statements concerning growth hormone (GH) are correct?

1. Excess growth hormone can affect both adults and children
2. The production of growth hormone is stimulated by GH-RH from the hypothalamus
3. Deficiency of growth hormone in children causes dwarfism
4. The deficiency of growth hormone affects only children; it has no effect on adults