If the left atrioventricular valve in the heart fails to close fully, blood is forced back into the atrium during ventricular systole. What is the immediate effect of this backflow?
- Ablood flowing from the heart carries less oxygen because less blood enters the lungs
- Bdiastolic pressure in the left ventricle falls because less blood enters the pulmonary artery
- Clower systolic pressure in the left atrium and less blood enters the pulmonary artery
- Draised pressure in the left atrium and less blood enters the aorta