Human Reproduction And Development

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Human Reproduction And Development

Every person has a certain system called the reproductive system.

When people reproduce their sex cells unite and form a cell called a zygote.

A zygote is a cell that is made of a complete set of chromosomes and is a result of fertilization.

The zygote is the cell that eventually develops into a child or more specifically a baby.

Male and Females have different reproductive systems that allow the reproduction to work the way it should.

They have to be different in order for them to be able to help promote the combining of the genetic material.

The male reproductive systems as I said before are different from the female reproductive system.

The male reproductive system includes different organs both internal and external.

The male reproductive system is made up of the penis, the scrotum, and the testes

The penis is and organ that is external, inside of it is the urethra, which is a tube.

The urethra is there to help the semen and the urine exit the male’s body.

Semen is male reproductive fluid.

The scrotum is also an external organ, it contain another part of the male reproductive system called the testes.

Testes are the other part of the male reproductive system, they produce sperm and testosterone.

Testosterone is a male sex hormone.

Sperm is the male’s sex cell. The sperm is made of a head and a tail both carrying different types of information.

The head of the sperm carries the genetic information or DNA.

The tail of the sperm carries the ability to give the sperm mobility.

When the sperm leaves the body, they travel through the testes and are mixed with seminal fluid.

The seminal fluid provides energy to the sperm.

Once mixed with the seminal fluid it becomes semen which then exit through the urethra and out of the body.

The female reproductive system is made up of the ovaries, the uterus, and the vagina.

The ovaries are organs they are almond shaped and are connected to the uterus.

They release eggs, produce eggs, and produce sex hormones.

Sex hormones could be either estrogen and progesterone. .

Fallopian tubes are tubes that connect the uterus to the ovaries.

When eggs leave the ovaries they travel through the fallopian tubes to get to the uterus.

Females are all born with 1 to 2 million eggs inside of them.

There eggs are female sex cells that carry genetic information.

Once a month females do this thing called ovulating where a mature egg is released from either the left or right ovary.

The egg goes down the fallopian tubes and has a chance to be fertilized by a sperm.

The uterus is an internal organ that is hollow, fertilized eggs develop in the uterus.

The uterus is also connected to the fallopian tubes and the vagina.

The vagina connects the uterus to the outside of the body. When the sexual process happens the sperm enters through the vagina, the baby exits the vagina as well.

Women go through something called the menstrual cycle every month also.

The menstrual cycle can be almost an analogy of a janitor or maid.

The “janitor” comes every month and cleans the “school” so that the “students” will be comfortable and safe when they arrive.

In real life the female’s uterus undergoes a protocol of sorts to fill up the uterus’ lining with blood to make sure the eggs are safe and comfortable.

If fertilized the egg will attach to the lining and begin its development.

If not, the blood contents of the lining will deposit out through the vagina.

When the contents deposits through the vagina it is called menstruation.

In order for a baby to develop the egg must first be fertilized.

The fertilization process is one that is started when male and female sex cells combine to make a zygote.

A zygote is made of a complete set of chromosomes. Which means that the 23 chromosomes that both the sperm and egg have combines to create 46 chromosomes.

The sex cells can only combine when the sperm are deposited into the vagina.

The sperm goes up the vagina to get to the egg.

Only one sperm can fertilize an egg regardless of whether there are 300 million sperm.

There are different ways for it to fertilize and develop causing the different births like twins, girls, boys, fraternal twins, triplets, identical twins.

When two eggs are released from the ovaries at the same time and they are both fertilized they develop into twins, but because they are developed from different eggs and sperm they are not identical only fraternal.

Similar to fraternal twins, identical twins develop from the same egg.

Identical twins come when the zygote is split into two piece and each cell develops into a seperate baby.

Because they are from the same zygote they share the same genetic material.

The stage from when the zygote is formed to when the the female gives birth is called pregnancy.

Pregnancy takes an average of nine months.

The child goes through five stages including the birth.

The five stages are fertilization, zygote, embryo, fetus, and then birth.

An embryo is what the baby is developed into by about a month.

A fetus is the embryo after more than eight weeks.

Eventually the fetus is fully formed and is ready to enter the world.

Most female’s would naturally give birth to the child through her vagina.

Some females need to have a Cesarean Section or a C Section.

When the baby is born the umbilical cord is cut off. This allows the baby to start breathing on their own.

Eventually the baby will go through the five stages of life.

The first stage is the Neonatal period, which is the period when the newborn is getting use to the world around them.

Breastfeeding is usually done during the Neonatal period because most mothers naturally produce milk and because the mother’s milk is better for the newborn because it has healthier side effects.

The next stage is infancy, during infancy the baby learns the fundamental skills for a young person such as how to walk, crawl, and stand.

Most children have drastic speeds of brain development when they are in the infancy stage.

That is due to the fact that the body develops faster at a young age because then by the time the child is about 5 there brain is already 90% developed and ready to take in all the information needed to promote success in their learning.

This is also why most schools start at age 5 because their brains are well developed by this time.

It is proven that it is possible for a child to forget some things after learning new things before the age of five because their brain is not developed enough to learn that much.

The next stage of life is childhood, during their childhood people learn to speak, dress themselves, draw, write, spell, read, and many fundamental learning skills for the slightly older child.

Childhood ends when a child goes through puberty this begins the start of Adolescence.

Usually puberty hits around age twelve (also around age 12 most girls experience the beginnings of their period).

During puberty boys get taller, sometimes grow stronger, and grow pubic and facial hair.

Boy’s voices tend to get lower during puberty because the larynx grows larger and thicker causing the voice of males and females to deepen.

For girls, puberty also causes them to grow taller, sometimes stronger, and pubic hair.

Girls develop hips and breasts during their stages of puberty.

During adolescence people’s brains develop more rapidly as well.

This is what causes hormonal tendencies such as relationship stress, self consciousness, suicidal mindsets,and calls to relationship tension.

Finally there is adulthood, as an adult your bones are done growing your brain is fully developed.

As you get older your bones and muscles start to weaken.

Your skin will start to wrinkle.

You have to keep yourself active to be able to help slow down your aging process.