6 Questions
Which of the following is true about the entry of arterial blood into the coronaries?
It occurs when the myocardium is relaxed (during diastole).
During which phase of the cardiac cycle does arterial blood mostly enter the coronaries?
Diastole
When does the entry of arterial blood into the coronaries primarily occur?
When the heart is relaxing
Which blood vessels deliver oxygenated blood to the heart?
Arteries
Where does venous blood from the heart collect before emptying into the right atrium?
Cardiac veins
What is the main function of coronary circulation?
To deliver oxygenated blood to the heart
Study Notes
Coronary Blood Flow
- Arterial blood mostly enters the coronaries during diastole, when the aortic valve is closed and the heart muscle is relaxed.
- The entry of arterial blood into the coronaries primarily occurs during diastole.
- The main function of coronary circulation is to deliver oxygenated blood to the heart muscle.
Blood Vessels and the Heart
- Oxygenated blood is delivered to the heart through the coronary arteries.
- Venous blood from the heart collects in the coronary sinus before emptying into the right atrium.
Test your knowledge of coronary circulation with this quiz! Learn about how arterial blood from the aorta enters the coronary arteries during diastole, when the myocardium is relaxed.
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