Blood Flow Through The Heart Flashcards
Where does deoxygenated blood return to the heart form the body
Through vena cava
What is the pathway of deoxygenated blood through heart to lungs
Vena cava➡️ right atrium➡️right ventricle➡️ pulmonary arteries➡️ lungs
What happens to blood when it reaches the lungs
Blood is oxygenated l
How does oxygenated blood return to heart
Lungs ➡️ pulmonary veins➡️ left atrium➡️ left ventricle➡️ aorta
What is the function of the aorta
It carries oxygenated blood away from heart to the rest of the body
What is the main function of the AV valves?
They ensure one-way flow of blood between the atria and the ventricles.
What What is the AV valve on the right side of the heart called, and how many flaps does it have?
The right AV valve is called the tricuspid valve, and it has 3 flaps.
What is the AV valve on the left side of the heart called, and how many flaps does it have?
The left AV valve is called the bicuspid or mitral valve, and it has 2 flaps.
When do the AV valves open?
When the heart is filling with blood.
When do the AV valves close, and what sound is produced when they do?
The AV valves close when the ventricles contract, producing the “LUBB” sound.
Where are the semilunar valves located?
In the pulmonary trunk (tricuspid) and the aorta.
What are the two types of semilunar valves?
The pulmonic/pulmonary valve and the aortic valve.
What happens to the semilunar valves when the heart is relaxed?
The semilunar valves are closed, producing the “DUB” sound.
What causes the semilunar valves to open?
The ventricles contracting pushes the semilunar valves open.
