Question : {:("Alary muscle contract"),(""darr),("(a) Pulled down"),(""darr),("Volume in pericardial sinus increases"),(""darr),("Blood flows to (b)"),(""darr),("Alary muscle relax"),(""darr),("Blood enters from dorsal haemocoel to heart through (c)"):}

Question : {:("Alary muscle contract"),(""darr),("(a) Pulled down"),("

1.	Question : {:("Alary muscle contract"),(""darr),("(a) Pulled down"),(""darr),("Volume in pericardial sinus increases"),(""darr),("Blood flows to (b)"),(""darr),("Alary muscle relax"),(""darr),("Blood enters from dorsal haemocoel to heart through (c)"):}
Answer» a- Ostia, b- DORSAL Septum, C-Heart a- Heart, b- AORTA, c-Ostia a- Dorsal diaphragm, b-pericardial sinus, C-Ostia a- VENTRAL septum, b-Heart, c-Aorta Answer :C