BI-1158
The heart
Biology · Secondary 3 · Hard · The heart
During one cardiac cycle, the right ventricle contracts and forces blood into the pulmonary artery. Which change in pressure causes the semilunar valve in the pulmonary artery to open?
A) Pressure in the right atrium becomes higher than in the right ventricle
B) Pressure in the pulmonary artery becomes higher than in the right ventricle
C) Pressure in the right ventricle becomes higher than in the pulmonary artery
D) Pressure in the vena cava becomes higher than in the pulmonary artery
A) Pressure in the right atrium becomes higher than in the right ventricle
B) Pressure in the pulmonary artery becomes higher than in the right ventricle
C) Pressure in the right ventricle becomes higher than in the pulmonary artery
D) Pressure in the vena cava becomes higher than in the pulmonary artery
- Pressure in the right atrium becomes higher than in the right ventricle
- Pressure in the pulmonary artery becomes higher than in the right ventricle
- Pressure in the right ventricle becomes higher than in the pulmonary artery
- Pressure in the vena cava becomes higher than in the pulmonary artery
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