The primary lymphoid organs are
1. Bone marrow and thymus
2. Bone marrow and spleen
3. Spleen and thymus
4. All three
Which of the following is not a lymphoid organ?
1. Appendix
2. Thyroid
3. Peyer's patches
4. Tonsils
The formation of effector lymphocytes will occur in
1. Bone marrow
2. Thymus
3. Appendix
4. Thyroid
What is the main lymphoid organ where all blood cells including lymphocytes are produced?
1. Spleen
2. Thymus
3. Lymph nodes
4. Bone marrow
The microenvironment for the maturation and development of T lymphocytes is created by
1. Bone marrow
2. Thymus
3. Both A and B
4. Spleen
The immature lymphocytes differentiate into antigen sensitive lymphocytes in
1. Bone marrow
2. Thymus
3. Both A and B
4. Spleen
The site of interaction of lymphocyte with antigen is
1. Bone Marrow
2. Thymus
3. Both 1 and 2
4. Lymph nodes
Thymus is not
1. Lobed organ
2. Bean shaped
3. Located near the heart
4. Beneath the breastbone
Which of the following acts as a filter of blood?
1. Bone marrow
2. Lymph node
3. Spleen
4. Thymus
Spleen is not
1. Large reservoir of erythrocytes
2. Mainly contains lymphocytes and phagocytes
3. Bean shaped
4. Lobed organ