5 Questions
What is the purpose of the atrioventricular valves?
To prevent backflow into the atria
Which valve lies between the left ventricle and the aorta?
Aortic semilunar valve
What is the function of the collateral routes in the coronary circulation?
To ensure blood delivery to the heart even if major vessels are occluded
What is the purpose of the chordae tendineae?
To anchor the atrioventricular valves to the papillary muscles
What is the direction of blood flow through the heart and lungs?
Right atrium → tricuspid valve → right ventricle → lungs
Study Notes
Blood Flow Through the Heart
- Right atrium → tricuspid valve → right ventricle
- Right ventricle → pulmonary semilunar valve → pulmonary arteries → lungs
- Lungs → pulmonary veins → left atrium
- Left atrium → bicuspid valve → left ventricle
- Left ventricle → aortic semilunar valve → aorta
- Aorta → systemic circulation
Heart Valves
- Ensure unidirectional blood flow through the heart
- Atrioventricular (AV) valves:
- Lie between atria and ventricles
- Prevent backflow into atria when ventricles contract
- Anchored to papillary muscles by chordae tendineae
- Semilunar valves:
- Aortic semilunar valve: between left ventricle and aorta
- Pulmonary semilunar valve: between right ventricle and pulmonary trunk
- Prevent backflow of blood into ventricles
Coronary Circulation
- Functional blood supply to the heart muscle itself
- Collateral routes ensure blood delivery to heart even if major vessels are occluded
This quiz covers the journey of blood through the heart and lungs, including the right atrium, tricuspid valve, right ventricle, and more.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
