Immunity PowerPoint

These flashcards cover key vocabulary and concepts related to the immune system and its functionalities.

Immune System

The complex network of cells, tissues, and organs that work together to defend the body against attacks by foreign pathogens.

Innate Immunity

The immune response that one is born with; it is non-specific and includes physical, mechanical, and chemical barriers.

Adaptive Immunity

The immune response that is acquired over time; it is specific and includes memory cells.

Antigen

Substances that the immune system recognizes as foreign or dangerous.

Cytokines

Chemical signals produced by white blood cells that regulate and coordinate the immune system.

Monocyte

A type of white blood cell that can differentiate into macrophages and play a role in phagocytosis and immune response.

Immunodeficiency

A weakened immune system that makes the body more susceptible to infections.

Autoimmunity

A condition where the immune system mistakenly attacks 'self' cells.

Hypersensitivity

An overreactive immune response that can cause damage to the body.

B Cells

A type of lymphocyte involved in antibody-mediated immunity that produces antibodies upon encountering an antigen.

T Cells

A type of lymphocyte involved in cell-mediated immunity, including CD4 and CD8 cells.

Immunoglobulins (Ig)

Antibodies produced by B cells that bind to specific antigens.

Passive Immunity

Immunity gained through the transfer of antibodies from another source, such as mother to child.

Active Immunity

Immunity developed after exposure to antigens, leading to the formation of memory cells.

Type I Hypersensitivity

An immediate allergic reaction mediated by IgE, causing symptoms like hives and conjunctivitis.

Type IV Hypersensitivity

A delayed immune response, such as reactions to poison ivy, involving T cells.