1.Initially,the heart of foetus is one chambered,then becomes two chambered,then three chambered and finally four chambered.Explain this2.What happens to the duration of systole and diastole( whether increases or decreases) during1)Trachycardia2)Bradycardia

1.Initially,the heart of foetus is one chambered,then becomes two cha

1.	1.Initially,the heart of foetus is one chambered,then becomes two chambered,then three chambered and finally four chambered.Explain this2.What happens to the duration of systole and diastole( whether increases or decreases) during1)Trachycardia2)Bradycardia
Answer» 1.Initially,the heart of foetus is one chambered,then becomes two chambered,then three chambered and finally four chambered.Explain this 2.What happens to the duration of systole and diastole( whether increases or decreases) during 1)Trachycardia 2)Bradycardia