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Blood
Transports nutrients
Erythrocytes (red blood cells)
Carries O2 in blood
Leukocytes (white blood cells)
Defense against toxins
Neutrophils
Destroy pathogens
Eosinophils
Release antihistamine
Basophils
Release histamine
Lymphocytes
Immune surveillance
Monocytes
Aggressive phagocytosis
Platelets (thrombocytes)
Release clotting chemicals
Tunica intima
Reduce friction for blood flow
Tunica media
Vasodilation
Tunica externa
Supporting the blood vessel
Venous valve
Prevents blood backflow
Endocardium
Reduces friction of blood cells
Myocardium
Pumps blood
Right atrium
Receives oxygen-poor blood into heart
Left atrium
Recieves oxygen-rich blood into heart
Right ventricle
Eject oxygen-poor blood out of heart
Left ventricle
Eject oxygen-rich blood out of heart
Heart valves
Prevents backflow of blood
Chordae tendineae
Prevent eversion of AV valves
Papillary muscles
Prevent eversion of AV valves