Bio 20.1 Immune System Components Quiz

What is the primary function of the thymus in the immune system?

What happens to self-reactive T cells during maturation in the thymus?

How do lymph nodes contribute to the immune response?

Which of the following best describes the thymus's interaction with lymphoid progenitor cells?

Which type of leukocytes are characterized by the presence of cytoplasmic granules?

What occurs to the thymus after puberty?

What essential role do dendritic cells play in lymph nodes?

What is the primary function of lymphoid progenitor cells derived from hematopoietic stem cells?

Where do all types of blood cells originate in the body?

Which of the following best characterizes self-tolerance in T cells?

What is the structural feature of lymph nodes that aids their function?

Which leukocyte type is NOT derived from myeloid progenitor cells?

What type of cells can hematopoietic stem cells differentiate into?

Which of the following types of leukocytes are considered agranulocytes?

What role do lymphoid organs primarily play in the immune system?

Which of the following cells is NOT directly involved in the immune response?

Immune System Components

The immune system protects the body from pathogens, defective cells, and toxins.
Leukocytes are white blood cells responsible for immune responses.
Granulocytes (neutrophils, eosinophils, basophils) have visible cytoplasmic granules.
Agranulocytes (lymphocytes, monocytes) lack visible cytoplasmic granules.
Red bone marrow is a lymphoid organ located within bones that produces all blood cells, including leukocytes.
Hematopoietic stem cells differentiate into lymphoid or myeloid progenitor cells.
Lymphoid progenitor cells become lymphocytes (B cells, T cells, and NK cells).
Myeloid progenitor cells become monocytes, macrophages, neutrophils, eosinophils, basophils, mast cells, and some dendritic cells.
B cells mature in the bone marrow and then migrate to other lymphoid organs like the spleen and lymph nodes.
The thymus is a lymphoid organ located above the heart, responsible for T cell maturation.
T cells mature in the thymus, eliminating self-reactive T cells that could attack the body's own healthy cells.
Self-tolerance refers to the ability of the immune system to distinguish between self and non-self antigens.
Lymph nodes are organs of the lymphatic system that filter lymph.
Lymph nodes contain macrophages and dendritic cells that identify and destroy pathogens through phagocytosis.
Dendritic cells migrate to lymph nodes after engulfing pathogens in other tissues.

Test your knowledge on the components of the immune system, including the roles of leukocytes, granulocytes, and agranulocytes. This quiz covers the maturation of B and T cells, and the functions of lymphoid organs such as the thymus and bone marrow. Understand how the immune system protects against pathogens and maintains health.