The Thymus

Q. __________ promotes production of antibodies to provide immunity

1. Thyroxine
2. Thymosin
3. Parathyroid hormone
4. Calcitonin

Q.

Old people have weak immune system. What could be the reasons ?

Q. Thymosin hormone is secreted by

1. thyroid
2. parathyroid
3. thymus
4. pineal gland

Q. Choose the incorrect option with respect to the location of the gland.

1. Thyroid - on either side of the trachea
2. Parathyroid - back side of the thyroid gland
3. Thymus - base of the skull
4. Pineal gland - base of the forebrain

Q.

Melatonin is secreted by

1. Skin

2. Pineal body

3. Thyroid

4. Pituitary gland

Q. Which of the following match is correct

1. Hormone - Oxytocin
   Effect - Milk ejection hormone
2. Hormone - Parathyroid hormone
   Effect - Decreases blood calcium level
3. Hormone - Adrenaline
   Effect - Decreases heart rate
4. Hormone - Thyroxine
   Effect - Decreases BMR

Q. Which one of the following statements matches correctly with the gland ?

1. Pineal - secretes more melatonin during the day and lesser at night
2. Thyroid – hyperactivity in young children causes cretinism
3. Thymus – starts undergoing atrophy after puberty
4. Parathyroid - secretes parathormone that promotes movement of Ca2+ ions from blood into bones during calcification.

Q.

Dwarfism in childhood is the result of:

1. Hypersecretion of growth hormone

2. Underproduction of somatotropin

3. Hyposecretion of somatotropin

4. Overproduction of thyrotropin

Q. Removal or absence of thymus in early life shall bring about

1. Lack of lymphocytes
2. Both (a) and (b)
3. Lack of antibodies
4. Lack of lymph nodes

Q.

Which of the following gland is located above the kidneys?

1. Thyroid gland

2. Pituitary gland

3. pancreas

4. adrenal gland

Q. Hormones of the hypothalamus are produced by

1. neurosecretory cells
2. follicular cells
3. α-cells
4. β-cells

Q. Which hormone causes dilation of blood vessels, increased oxygen consumption and glucogenesis?

1. ACTH
2. Thyroxin
3. Adrenaline
4. Calcitonin

Q.

Which hormone is also called vasopressin?

Q. Destruction of thymus in children may lead to

1. Loss of skin pigmentation
2. Reduction of hemoglobin content in blood
3. Reduction in stem cell production
4. Loss of cell mediated immunity

Q. Which of these is an excitatory neurotransmitter in the brain?

1. GABA
2. Glycine
3. Glutamate
4. Aspartate

Q.

Where are T cells derived from?

Q. The sketch given shows a certain condition in an individual:
(i) Name the condition.

Q. Write short note on thymus gland.

Q. Thymosin hormone is secreted by

1. thyroid
2. parathyroid
3. thymus
4. pineal gland

Q. .......... is the gland of emergency.

1. Thyroid gland
2. Pineal gland
3. Adrenal gland
4. Pituitary gland

Q. A gland that gradually reduces and degenerates with ageing is

1. thyroid
2. thymus
3. parathyroid
4. pituitary

Q.

Thymosin is responsible for

(a) raising the blood sugar level

(b) raising the blood calcium level

(c) differentiation of T-Iymphocytes

(d) decrease in blood RBCs

Q.

State the origin and location of thyroid gland.

Q. The name of endocrine gland in the human brain is

1. Thyroid
2. Adrenal
3. Thymus
4. Pituitary

Q. Thymus gland develops from embryonic

1. Mesoderm
2. Endoderm
3. All of the above
4. Ectoderm

Q.

Give the exact location of the following gland-

Adrenal gland.

Q. Thymosin secreted by the thymus stimulates development of

1. T cells
2. B cells
3. Both A and B
4. None of the above

Q. The gland which is related to the maturation of lymphocytes is

1. Adrenal
2. Thymus
3. Pituitary
4. Thyroid

Q. Assertion :Immune response of old persons become weak. Reason: Thymus degenerates in old individuals.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. Transplantation of tissue/organ fails often due to non-acceptance by the patient’s body. Which type of immune response is responsible for such rejections?

1. Cell mediated immune response
2. Humoral immune response
3. Physiological immune response
4. Autoimmune response