Match the following
Location valve
1) Opening of coronary sinus a) tricuspid valve
2) The base of pulmonary aorta b) bicuspid valve
3) The opening of inferior vena cava c) semilunar valve
4) Bet left atrium and left ventricle d) thebesian valve
5) Bet right atrium and right ventricle e) eustachian valves
Excuse me sir / madam do the superior vena cava have valves ?