Plant and Animal Organ Systems and Their Functions

Immune System

A complex network of cellular actions and signals that defend an organism against pathogens.

Dysfunction of the immune system

Can lead to autoimmune diseases, inflammatory diseases, allergies, and cancer.

Innate Immune System

Inherited defense mechanisms.

Adaptive Immune System

Acquired defense mechanisms.

Plant Immune System

Mechanisms plants use for protection.

Plant-Pathogen Interaction

Proteins and factors involved in plant defense against pathogens.

Systemic Acquired Response in Plants

Preparation for future attacks in plants induced by signals like salicylic acid and jasmonic acid.

Plant Defense Response

Includes gene-for-gene response and plant resistance mechanisms.

Animal Immunity

Involves recognition of invaders by antigens and three lines of defense against infections.

Immune Cells

Release cytokines, attack invaders, produce antibodies, and activate T cells to fight off threats.

T Cells

Recognize antigens, get activated by APCs, and can become memory T cells for long-term protection.

Memory T Cells

Provide immune protection against specific invaders for months or years, crucial for fighting diseases like measles or chicken pox.