5 types of WBC

erythrocytes

Leukocytes

thrombocytes

pulmonary circulation

systemic circulation

tricuspid valve

pulmonice valve

mitral valve
(bicuspid valve)

aortic valve

Layers of the Heart

endocardium

myocardium

epicardium

blood vessels

aorta, arteries, arterioles

venules, veins, superior and inferior vena cavae

Circrulatory

heart