The aortic valve keeps the blood moving from veins to the heart.
举一反三
- Valve in the heart enables it to function by opening and closing, preventing blood from passing through. A: 正确 B: 错误
- Which of the blood vessels conduct blood away from the ventricles of the heart and lead to the capillaries? A: arteries and veins B: arterioles and venules C: arteries and venules D: arteries and arterioles
- What can not produce Doppler effect in human body ( ) A: Fetal heart B: Heart valve C: Stationary liver tissue D: Blood flow
- The _____ carries blood from the heart to other parts of your body.
- The blood ran down from the its heart and ( ) the rose crimson red.