Give the term / reason a) Mechanism responsible for parturition. b) Role of oxytocin during expulsion of the baby out of uterus c) Why does zona pellucida layer block the entry of additional sperms? d) Sperm cannot reach ovum without seminal plasma. e) All copulations do not lead to fertilization and pregnancy.
Answers
Answered by
32
a) featal ijection reflex.
b) oxytocin helps in unusual contraction of muscle and this contraction is necessary for parturition
c)it makes the formation of morethan 1 zygote,it becomes more complicated.
d)seminal plasma contain nutrients,sucrose etc. along with sperm for norishment
e)sperm which can cross the zona pellucida layer and fuce with ovum can only let to fertilization.all the pre fertilisation steps comes positively,and it is not so easy.
b) oxytocin helps in unusual contraction of muscle and this contraction is necessary for parturition
c)it makes the formation of morethan 1 zygote,it becomes more complicated.
d)seminal plasma contain nutrients,sucrose etc. along with sperm for norishment
e)sperm which can cross the zona pellucida layer and fuce with ovum can only let to fertilization.all the pre fertilisation steps comes positively,and it is not so easy.
Similar questions