Sheep Heart Practical

Right atrium

Receives deoxygenated blood from body via vena cavae

Left atrium

Receives oxygenated blood from lungs

Right ventricle

Pumps blood to lungs via pulmonary trunk

Left ventricle

Pumps blood to body via aorta

Tricuspid valve

Prevents backflow into right atrium

Bicuspid/Mitral valve

Prevents backflow into left atrium

Pulmonary semilunar valve

Prevents backflow from pulmonary trunk

Aortic semilunar valve

Prevents backflow from aorta

Aorta

Carries oxygenated blood to body

Pulmonary trunk

Carries deoxygenated blood to lungs

Superior vena cava

Returns deoxygenated blood from upper body

Inferior vena cava

Returns deoxygenated blood from lower body

Coronary arteries

Supply blood to heart muscle

Interventricular septum

Separates left and right ventricles

Chordae tendineae

Connect valves to papillary muscles

Papillary muscles

Anchor valves, prevent prolapse

Apex

Pointed bottom of heart

Base

Broad top of heart with major vessels

Myocardium

Cardiac muscle layer

Pericardium

Protective outer sac