Structure and Function of the heart Flashcards
What does the heart consist of?
The Heart consists of four chambers the left and right are separate but there are valves between the top and bottom chambers
What are the upper and lower chambers?
the upper chamber is the left and right atria and they receive blood. the bottom chamber is the left and right ventricle and they pump blood out of the heart
What is the process of deoxygenated blood?
deoxygenated blood arrives to the right atrium from the vena cava. next, it is sent to the right ventricle through the tricuspid valve. it is then pushed by the muscles of the right ventricle to the lungs through the pulmonary artery to be oxygenated
what is the process of oxygenated blood?
oxygenated blood returns from the lungs back to the left atrium. it is then pushed into the left ventricle through the bicuspid valve and then out of the aorta through the aortic semilunar valve.
What is the structure of the atrium
The atrium is a thin-walled chamber that receives blood from the veins
What is the function of the right atrium?
The right atrium receives deoxygenated blood from the vena cava and pumps it to the right ventricle through the tricuspid valve
What is the function of the left atrium
The left atrium receives oxygenated blood to the heart from the pulmonary veins.
What is the structure of the left ventricle
The left ventricle is one of the four chambers and is located in the bottom left below the left atrium
What is the structure of the right ventricle
The right ventricle is triangular in shape and extends from the tricuspid valve to the apex of the heart
What is the function of the left ventricle
The function of the left ventricle is that it pumps out oxygen through the aortic valve.
What is the function of the right ventricle
The function of the right ventricle is that it passes the blood onto the pulmonary artery
What is the structure of the septum
The septum is a thick structure made of muscular bands that separates the left and right ventricles and helps with cardiac function.
What is the function of the septum
The septum divides the left and right sides of the heart so it stops the mixing of oxygenated and deoxygenated blood
What is the structure of the semilunar valve
The semilunar valve has a half-moon shape and consists of the endocardium and connective tissues
What is the function of the semilunar valve
The semilunar valve Prevents the back flow of blood into the ventricles when ventricles relax.