Pre AP Biology

Circulatory and Immune Systems(8.11)

Gastrovascular Cavity

Open Circulatory (left) &Closed Circulatory (right)

Heart StructureAtrium – receives blood

Ventricles – pump blood out

Water Vascular System

Blood Vessel Types

Where is the blood?

Blood Cell Types

Antibodies attaching to the antigen

Antigen-bindingsites

Epitopes(antigenicdeterminants)Antibody A

Antibody BAntibody C

Antigen

WBC “eating” a pathogen

Innate Immunity

Plant defenses - Thorns

Plant defenses - cork