Thymus

Q. Immature lymphocytes differentiates into antigen-sensitive lymphocytes in the

1. Secondary lymphoid organs
2. Both a and b
3. None of the above
4. Primary lymphoid organs

Q. Lymphocytes mature into effector cells in

1. Spleen
2. Bone marrow
3. Thymus
4. Blood

Q. Assertion : Interaction of lymphocytes and antigens occur in the secondary lymphoid organs.
Reason : Thymus and bone marrow provides the microenvironment for the lymphocytes to interact with the antigen.

Q. Where among these places would lymphocytes not differentiate into antigen sensitive lymphocytes?

1. Peyer’s patch
2. MALT
3. Spleen
4. Thymus

Q. Choose the correct statements regarding bone marrow and thymus.

1. Both are primary lymphoid organs
2. Bone marrow is the site where B and T cells become antigen sensitive
3. Thymus is the site of origin for B and T cells
4. B cells become antigen sensitive in the Bone marrow while T cells become antigen sensitive in the Thymus

Q. Which WBC has maximum life span among the following?

1. Basophil
2. Monocyte
3. Acidophil
4. Neutrophil

Q. Where would you find the highest concentration of strontium in a child who is exposed to strontium (strontium is preferentially incorporated into growing long bone)?

1. In the cartilage lining the joints
2. In the skull bones
3. Near the epiphyseal plates of long bones
4. In the center of long bones
5. Evenly distributed throughout the body

Q. Where among these places would lymphocytes not differentiate into antigen sensitive lymphocytes?

1. Peyer’s patch
2. MALT
3. Spleen
4. Thymus

Q. Which WBC has maximum lobes of nucleus?

1. Acidophil
2. Basophil
3. Lymphocyte
4. Neutrophil

Q. How many statements are true about T-lymphocytes in mammals?

I) T-lymphocytes can differentiate into different cell types during proliferation.
II) They originate in all lymphoid organs.
III) They can mature in all lymphoid organs.
IV) They can proliferate only in the thymus.

Q. Bone marrow of long bones are the sites of

1. Production of WBC's
2. Production of RBC's
3. Production of blood
4. Breakdown of RBC's

Q. Which of these cells originate in bone marrow, circulate in the blood for 1-2 days, migrate to connective tissues and transform into macrophages

1. Eosinophils
2. Monocytes
3. Lymphocytes
4. Basophils

Q. Name the two special types of lymphocytes in humans. How do they differ in their roles in immune response?

Q. B- and T-cells required for immune system are produced in.

1. Lymph nodes
2. Liver
3. Spleen
4. Bone marrow

Q. Presence of red blood cells in urine is called?

1. Anuria
2. Haematuria
3. Glycosuria
4. Ketonuria

Q. Very short answer type.
Mention the most significant function of lymphocytes.

Q. In T lymphocyte , 'T' stands for ?

1. Thrombin
2. thyroid
3. thymus
4. none of these