Immune & Lymphatic System – Study Guide

A collection of flashcards covering key concepts and vocabulary related to the immune and lymphatic system.

Lymphatic System

A network responsible for fluid recovery, immunity, and transporting lymph to the heart.

Homeostasis

The maintenance of stable internal conditions in the body.

Lymph

The fluid collected and carried through the lymphatic system.

Lymphatic vessels

Structures responsible for transporting lymph to the heart.

Lymph nodes

Components that inspect and clean lymph as it passes through.

MALT

Mucosa-Associated Lymphoid Tissue, immune tissue found in mucous membranes.

Pathogen

An organism that causes disease; literally means 'disease-producer'.

Innate Immune Response

The body's first line of defense, includes non-specific immunity.

Adaptive Immune Response

A specific immune response targeting one specific pathogen.

Antibody

Proteins made by B cells that bind to antigens and neutralize pathogens.

Pathogen examples

Viruses, Bacteria, Fungi, Protist, Worms.

Inflammation

A non-specific immune response characterized by redness, heat, swelling, and pain.

Macrophage

A type of phagocyte, meaning 'big eater', that engulfs and digests pathogens.

Cytotoxic T cells

Cells activated by helper T cells to destroy infected body cells.

Primary Immune Response

The initial immune response characterized by a slow response and fewer antibodies.

Secondary Immune Response

A faster and stronger immune response upon subsequent exposure to a pathogen.

Natural Active Immunity

Immunity acquired through natural infection.

Artificial Active Immunity

Immunity acquired through vaccination.

Natural Passive Immunity

Immunity acquired from mother through antibody transfer.

Artificial Passive Immunity

Immunity acquired through injection of antibodies.

Complement System

Helps the body by punching holes in pathogens and enhancing inflammation.