Heart via Dissection Flashcards
(19 cards)
What are the four main components of the mammalian heart?
4 chambers, 4 vessels, 4 valves.
What should you note when examining the difference in the thickness of the ventricular walls?
The left ventricle will be thicker than the right ventricle, reflecting its role in pumping blood to the entire bo
What are the four main chambers of the heart?
two atria (right and left) and two ventricles (right and left).
What is the function of the right atrium?
t receives deoxygenated blood from the body via the superior and inferior vena cava and pumps it into the right ventricle.
What is the function of the left atrium?
It receives oxygenated blood from the lungs via the pulmonary veins and pumps it into the left ventricle.
What is the function of the right ventricle?
It pumps deoxygenated blood to the lungs via the pulmonary artery for oxygenation.
What is the function of the left ventricle?
It pumps oxygenated blood to the entire body via the aorta.
What are the four main valves in the heart?
The tricuspid valve, bicuspid (mitral) valve, pulmonary valve, and aortic valve.
What is the role of the tricuspid valve?
It separates the right atrium from the right ventricle and prevents backflow of blood into the atrium.
What is the role of the bicuspid (mitral) valve?
It separates the left atrium from the left ventricle and prevents backflow of blood into the atrium.
What is the function of the pulmonary valve?
It separates the right ventricle from the pulmonary artery and prevents backflow of blood into the ventricle.
What is the function of the aortic valve?
It separates the left ventricle from the aorta and prevents backflow of blood into the ventricle.
What are the coronary arteries?
he coronary arteries are vessels that supply oxygenated blood to the heart muscle (myocardium).
What is the function of the superior vena cava?
It returns deoxygenated blood from the upper half of the body to the right atrium
What is the function of the inferior vena cava?
It returns deoxygenated blood from the lower half of the body to the right atrium.
What is the function of the aorta?
It is the largest artery in the body, carrying oxygenated blood from the left ventricle to the rest of the body.
What is the pulmonary artery’s role?
It carries deoxygenated blood from the right ventricle to the lungs for oxygenation.
What are the layers of the heart wall?
The epicardium (outer layer), myocardium (muscle layer), and endocardium (inner layer).
What is the function of the myocardium?
It is the thick, muscular layer of the heart responsible for contracting and pumping blood.
