How Are Babies Made? The Science of Reproduction
It is mysterious about how the babies are made.
Some groups of people come up with stories surrounding this scenario, especially the adults when asked by the children.
Scientific research reveals how the babies are formed as you will see below.
The Human Reproductive System
The human body has a system responsible for reproduction.
The systems vary from male to female in some ways.
The male reproductive system has testis that produces sperms.
A summary of it is provided here.
The sperms are the male gametes.
The penis is also part of this system.
They both hang outside the abdominal cavity.
The testis hangs outside to reduce the body temperature from reaching the sperms.
The sperms require moderate temperature for development.
The female system, on the other hand, contains two major divisions, the ovum, and the Vagina.
The egg is the female gamete.
The vagina is the canal through which the penis is inserted during coitus.
The ova as the female sex cells are released once in about 28 days.
This cycle is called the menstrual cycle. It responds to hormonal signals.
In this process, if they are not fertilized, they are flushed out through the birth canal.
The Process of Child Making
Reproduction in human beings begins sexual intercourse.
After copulation, if fertilization has occurred, then pregnancy follows.
The pregnancy takes nine months then birth occurs.
The newly born baby is very helpless and needs intensive care.
This care can usually take up to twelve weeks.
Naturally, human reproduction occurs through sexual intercourse.
This type of reproduction is internal fertilization.
During coitus, the man inserts his erected penis into the female vagina.
The two partners start pelvic thrusts up to the time the man will ejaculate.
Upon ejaculation, the sperms carried by the semen travel all the way through vagina and cervix up to the uterus.
Research reveals that only 1 out of the over 13millon sperms fertilizes the ovum.
Upon fertilization, the egg divides itself it various cell through mitosis.
This leads to a nine-month period called pregnancy.
Now the male and female gamete have joined together to form a zygote.
The cells continue to multiply through mitosis.
The period from fertilization to birth is called pregnancy period.
During this time, the zygote or fetus receives nutrients and oxygenated blood through the placenta.
The placenta is a connector between the mother and the baby.
It is also used as a medium of substance exchange between the two.
The bay undergoes various stages.
The zygote stage lasts for three days.
Embryo stage lasts for two months and the last stage, the fetus goes up to the day of delivery.
The fetus grows in the mother’s womb naturally.
After it has fully developed, it is born.
The process of birth begins with labor pain.
The amniotic sack bursts and expellees the amniotic fluid.
The labor causes the uterine walls to thrust the baby out through the birth canal.
The head emerges first in typical cases.
The hands and the whole baby comes outside.
Human beings undergo internal fertilization.
The entire process involves the reproductive system.
After coitus, fertilization occurs leading to pregnancy.
The whole pregnancy period is about nine months.
This is the scientifically proven way through which babies are made.