Transport in Animals

Question 1

Function of chordae tendineae

Answer 1

When ventricles contract, lower volume and higher pressure. This forces the AV valves to shut preventing backflow into the atria.
Prevents backflow of blood into the atria

Question 2

Flow of blood through the heart from the vena cava

Answer 2

Vena Cava -right atrium contracts- AV triscupid valves - right ventricle contracts- semilunar valve
Pulmonary artery- DeO2 becomes O2 and travels back via PV into left atrium- contracts- biscupid AV valves- into right ventricle contracts- SLV
Aorta