Thyroid Gland

Q.

What is an example of an apocrine, exocrine, merocrine, and holocrine gland?

Q.

Explain why, people are advised to use iodised salt in cooking food.

Q.

Which one of the following pairs correctly matches a hormone with a disease resulting from its deficiency?

1. Insulin – Diabetes insipidus

2. Luteinizing hormone – failure of ovulation

3. Parathyroid hormone – Diabetes mellitus

4. Thyroxine – Tetany

Q.

Question 12
Match the hormones given in Column A with their deficiency disease given in Column B.
$\begin{array}{cc}\text{Colume A}& \text{Colume B}\\ \text{(a)Thyroxine}& \text{(i) Salt imbalance}\\ \text{(b)Growth hormone}& \text{(ii) Diabetes}\\ \text{(c)Insulin}& \text{(iii) Goitre}\\ \text{(d)Adrenalin hormone}& \text{(iv) Dwarfism}\end{array}$

Q.

It was observed that the tadpoles are not growing into adult frogs in a village pond. A scientist who was asked to find the reason for this concluded that the pond water did not contain a sufficient amount of a mineral P which could make a hormone Q. The hormone Q can cause a phenomenon R in tadpoles so that they become adult frogs.

(a) What are (i) P (ii) Q, and (iii) R?

(b) Name one human disease which can also be caused due to the deficiency of P in the food and water.

Q. Why do tadpoles growing in iodine deficient waters fail to grow into frogs?

Q.

State the main functions of TSH?

Q.

What will happen if the water in which tadpoles are growing does not contain sufficient iodine?

Q.

Why is the use of iodized salt advisable?

Q. A tadpole grows to become a frog due to the secretion of thyroxine.

1. True
2. False

Q.

Name the hormone which is required for the metamorphosis of larvae (tadpoles) into adult frogs.

Q.

Assertion: Excess amount of calcium is regulated by calcitonin.
Reason: Parathormone is produced by the parathyroid gland.

1. If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.

2. If both Assertion and Reason are correct but the Reason is not the correct explanation of Assertion.

3. If Assertion is correct but Reason is incorrect.

4. If Assertion is incorrect but Reason is correct.

Q.

What is goitre ? What causes goitre ?

Q.

Name the hormone whose deficiency in the body causes goitre.

Q. Question 4
For the metamorphosis of tadpoles which of the following elements must be available in water?

(a) Chlorine
(b) Carbon
(c) Sulphur
(d) Iodine

Q. Thyroxine hormone secreted by thyroid gland requires___ for its production.

1. iodine
2. iron
3. calcium
4. thorium

Q.

What is racemose gland?

Q. Roy has weak bones and tooth decay. What kind of mineral do you think he has a deficiency of?

1. Starch
2. Iodine
3. Iron
4. Calcium

Q.

Name the substance which is needed continuously by the thyroid gland to make thyroxine hormone.

Q.

The release of sex hormones which control the reproductive development of an individual, are further controlled by __ gland.

Q.

Lack of insulin causes goitre.

1. Bacteria

2. HIV virus

Q.

Assertion(A): Iodine diet is essential for proper body functioning in man.

Reason(R): Iodine helps in the formation of thyroxin which regulates overall metabolism of the body.

1. A & R both are incorrect

2. A is correct & B is incorrect

3. A is incorrect & B is correct

4. A & R both are correct

Q.

State the main symptoms of goitre.

Q.

What kind of disease is this person suffering from?

1. Typhoid

2. Goitre

3. Measles

4. Scurvy

Q.

Deficiency of calcium causes ___________.

1. Anaemia

2. Scurvy

3. Osteoporosis

4. Rickets

Q.

In the set of terms given below, there is an odd one and cannot be grouped in the same category to which the other three belong. Identify the odd term in each set and name the category to which the remaining three belong.

1. Cortisone

2. Somatotropin

3. Adrenocorticotropic hormone

4. Vasopressin

Q.

What is hyperthyroidism?

Q.

What is the peptide hormone secreted by parathyroid glands called?

Q.

Which of the following human disease can be prevented by the same hormone which brings about metamorphosis in frogs ?

(a) diabetes (b) anaemia (c) goitre (d) rickets

Q. Write a short note on pineal body?