Heart Structure (valves open/close)

When pressure in right atrium (RA) is higher than pressure in right ventricle (RV), the

• tricuspid valves open

• tricuspid valves close

• bicuspid valves open

• bicuspid valves close

When pressure in right atrium (RA) is LOWER than pressure in right ventricle (RV), the

• tricuspid valves open

• tricuspid valves close

• bicuspid valves open

• bicuspid valves close

When pressure in left atrium (LA) is LOWER than pressure in left ventricle (LV), the

• tricuspid valves open

• tricuspid valves close

• bicuspid valves open

• bicuspid valves close

When pressure in left atrium (LA) is HIGHER than pressure in left ventricle (LV), the

• tricuspid valves open

• tricuspid valves close

• bicuspid valves open

• bicuspid valves close

When pressure in right ventricle (RV) is HIGHER than pressure in pulmonary artery , the

• pulmonary valves open

• pulmonary valves close

• aortic valves open

• aortic valves close

When pressure in left ventricle (LV) is HIGHER than pressure in aorta , the

• pulmonary valves open

• pulmonary valves close

• aortic valves open

• aortic valves close