10 Questions
Which is the correct term for the developmental history of the immune system during evolution?
Phylogeny
What are the most primitive signs of an immune-like system?
Phagocytosis and inflammatory reactions
Which group of vertebrates possesses a diffuse immune system and lacks distinct higher vertebrate immune structures?
Cyclostomes
Which vertebrates produce a high molecular weight antibody comparable to human immunoglobulin M (IgM) upon exposure to foreign substances?
Hagfish and lampreys
At what stage of life does the individual undergo progressive immunologic maturation or ontogeny?
Fetal, newborn, and young adult stages
Where do cells responsible for nonspecific and specific immunity initially arise from?
Yolk sac
How are maternal antibodies transmitted to the fetus during prenatal development?
Through the placenta
In which vertebrates does the immune system reach its highest development?
Birds and mammals
What is the primary lymphoid organ found in all jawed vertebrates?
Thymus
What is the major difference between the mitotic activity of lymphocytes in primary and secondary lymphoid tissues?
Primary is antigen-independent, secondary is antigen-driven
Learn about the developmental history of the immune system during evolution (phylogeny) and within individuals of a species (ontogeny). Explore the primitive signs of an immune-like system, nonspecific immunity in invertebrates, and the evolution of the vertebrate-like immune system in primitive vertebrates.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
