How ovulation is beneficial for the foetus to have a circulatory system that is not directly attached to the circulatory system of mother?
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(a) OVOLUTION--When a girl child is born, her ovaries already contain thousands of immature ova (or eggs) which are contained in immature follicles. At the age of puberty, one follicle develops into a mature ovum (or egg). It pinches off from the surface of the ovary and enters the fallopian tube. This process is termed as ovulation.
(b) The circulatory system of the foetus and that of the mother are connected by an umbilical cord that attaches the placenta to the fetus. The separate circulatory system facilitates quick diffusion of nutrients, metabolic waste and respiratory gases between the foetus and the mother. Also placenta acts as a shield for the baby against bacteria and other pathogens.
(a) OVOLUTION-When a girl child is born, her ovaries already containthousands of immature ova (or eggs) which are contained in immaturefollicles. At the age of puberty, one follicle develops into a matureovum (or egg). It pinches off from the surface of the ovary and entersthe fallopian tube. This process is termed as ovulation.(b) The circulatory system of the foetus and that of the mother areconnected by an umbilical cord that attaches the placenta to thefetus. The separate circulatory system facilitates quick diffusion ofnutrients, metabolic waste and respiratory gases between the foetusand the mother. Also placenta acts as a shield for the baby againstbacteria and other pathogens.
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