Immune System Cell Functions

The lecture covers the immune system's cells, tissues, and organs, focusing on their structure, function, and origin. It explains the classification of lymphoid organs into primary and secondary types, detailing their roles in immune response. The lecture also discusses the differentiation of immune cells from hematopoietic stem cells and provides an in-depth look at granulocytes and their functions.

What is the primary function of the primary lymphoid organs?

• To provide a microenvironment for lymphocyte development

• To trap antigens

• To destroy pathogens

• To produce antibodies

Which cells are involved in both innate and adaptive immune responses?

• Neutrophils

• Gamma delta T cells

• B cells

• Macrophages

What is the role of the pluripotent hematopoietic stem cell?

• To destroy pathogens

• To produce antibodies

• To trap antigens

• To differentiate into various blood cells

Which lineage results in the production of erythrocytes?

• Lymphoid lineage

• Granulocyte lineage

• Myeloid lineage

• Erythroid lineage

What is a characteristic feature of granulocytes?

• They are not involved in immune response

• They have multilobed nuclei

• They are involved in antibody production

• They have a single nucleus

Which granulocyte is primarily responsible for phagocytosis?

• Mast cells

• Neutrophils

• Eosinophils

• Basophils

What is the primary function of basophils?

• Phagocytosis

• Changing blood vessel permeability

• Antigen presentation

• Antibody production

Which dye stains the granules of eosinophils?

• Safranin

• Eosin Y

• Methylene blue

• Crystal violet

What is the role of mast cells in the immune response?

• To produce antibodies

• To secrete histamine

• To present antigens

• To perform phagocytosis

Which granulocyte is involved in allergic responses?

• Eosinophils

• Basophils

• Neutrophils

• Mast cells