Chambers:
* Right Atrium: Receives deoxygenated blood from the body through the superior and inferior vena cava.
* Right Ventricle: Pumps deoxygenated blood to the lungs through the pulmonary artery.
* Left Atrium: Receives oxygenated blood from the lungs through the pulmonary veins.
* Left Ventricle: Pumps oxygenated blood to the body through the aorta.
Valves:
* Tricuspid Valve: Located between the right atrium and right ventricle, it prevents backflow of blood into the right atrium.
* Pulmonary Valve: Located between the right ventricle and the pulmonary artery, it prevents backflow of blood into the right ventricle.
* Mitral Valve (Bicuspid Valve): Located between the left atrium and left ventricle, it prevents backflow of blood into the left atrium.
* Aortic Valve: Located between the left ventricle and the aorta, it prevents backflow of blood into the left ventricle.
Other Structures:
* Chordae Tendineae: Tough, fibrous cords that attach to the valves and help them open and close properly.
* Papillary Muscles: Small muscle projections located within the ventricles that attach to the chordae tendineae.
* Pericardium: A sac that surrounds the heart and helps to protect it.
Blood Flow:
Deoxygenated blood enters the right atrium and is pumped to the right ventricle. From there, it is pumped to the lungs where it becomes oxygenated. The oxygenated blood then returns to the left atrium, is pumped to the left ventricle, and then sent out to the body through the aorta.
It's important to note that the pig's heart is very similar in structure and function to the human heart. This is why it is often used as a model in medical research and education.