Fallopian After Genetic Fertilization

Human reproduction works when an erect penis is inserted into the vagina and the man thrust it in and out until ejaculation occurs. The semen (liquid that includes sperm and other liquid) is released into the vagina. The sperm travels along the vagina and meets the egg, where the sperm fertilizes the egg. The sperm and egg forms a zygote. The zygote later forms into an embryo cell and is implanted onto the endometrium (the uterus wall); this is the beginning of pregnancy. (Y9 Reproduction

At one month of pregnancy the baby is still any embryo and it is made up of two layers which will soon produce into body parts and organs. In the first two weeks of pregnancy a women isn’t actually pregnant because the women’s body is preparing for ovulation as usual. You usually ovulate (release an egg) around two weeks after the first day of your period this depends on the length of your period. Then during the third week after the first day of your last period your fertilised egg moves across the fallopian tube towards the womb. The egg starts off as a single cell but it divides multiple times. By the time the egg reaches the womb it becomes the mass of 100 cells which is known as an embryo. In the fourth week of pregnancy the embryo grows and develops in the lining of the womb. The outer cells reach out and link themselves with the mothers blood supply. The inner cells form

Biological development of a fetus is vary rapid and complex over the nine-month period in the womb. When both the male spermatozoon and the female ovum combine it forms what is called a zygote which holds the twenty-three pairs of chromosomes. The zygote or the embryo undergoes cell division and makes its way to the uterine wall to implant itself, this process is completed about ten days after conception. By the end of the eighth week the organ systems have formed and human characteristics can start to be noticed. From the eighth week until birth the embryo is now labeled a fetus. Quickening can occur from the sixteenth week until birth, this is where the mother can feel the fetus moving. Around the twenty-second week viability can take place, this is where the fetus can survive outside the womb. The nine-month period of being pregnant is split into different trimesters. With the different trimesters there are different abortion procedures can be used to remove the fetus.

For the next few days, the cells of a zygote divide and multiply into a blastocyst, which travels through the fallopian tubes into the uterus. Part of the blastocyst becomes an embryo, which then turns into a fetus. Although it is a well-known fact that fetuses can not survive out of the womb prior to 24 weeks, pro-lifers believe in life even at the zygote stage. “Since this can be established scientifically by looking at the number of chromosomes present in a fertilized egg, it is enough for the pro-lifer to conclude that abortion (at any stage of pregnancy) is morally akin to murder.”

During cleavage the zygote experiences rapid mitotic divisions followed by cellular differentiation leading to development of an embryo. (Coventry University, 2015)

Those stages are the Germinal stage, the Embryonic stage, and the Fetal stage. The Germinal Stage is the first stage and it is a two-week period that happens after the sperm and egg cell join together to form a zygote. This process is called conception. After conception, the zygote begins to divide. This turns into into a ball of cells that moves beside the fallopian tube. This travels all the way to the uterus. This process is called implantation and it happens when the cells is placed in the wall of the uterus. This process takes about a week to complete. After the two weeks, the Embryonic stage takes place next. The embryonic stage takes two to eight weeks right after conception. At this point in the process, the ball of cells is now an embryo. In this stage, all the major organs form. The last stage of prenatal development is the Fetal stage. This last eight weeks after conception up to birth. One of the first things to take place is the sex organs begin to form. Next, the bones form, muscles form, and the fetus begins to move. The organ systems also begin to develop and the brain’s size grows. One of the last things to work independently is the respiratory and digestive

1 Month: In the first month in conception the baby length wise is about ½ inch. During this early month, you will be very curious and wondering how the baby growth is developing inside the mother womb. Although, the baby is not fully developed its look like the shapes of an alien. Most likely it is too early in stage to detect the sex of the baby.

In this chapter it talks about the development of how a fetus changes into a baby. The first part of the chapter starts out by talking about how the zygote divides into the two cells. With another 36 hours the zygote becomes 32 cells. This time period of conception is call germinal stage. In the first few days in the germinal stage the cell mass takes the form of a fluid-filled ball called a blastocyst. The dividing cells cell moves through the fallopian tube, then they go throw to the uterus. This chapter also talks about how although humans are not chickens their babies are formed in the same way. Like in a chickens egg the yoke develops into a baby chicken, and in a human the embryo becomes a fetus. Then the chapter starts to talk about the different things bleeding while being pregnant can mean. Although a majority of people believe that if a woman bleeds while pregnant mans that she has had a miscarriage, it can mean many of different things. Miscarriages can be caused by many different things, and can cause many different types of problems. Such as a high risk of having anxiety and it also puts relationships at a higher percentage of ending. One third of percent end in a miscarriage. Miscarriages happed within the first three months of pregnancy. Woman who are over the age of thirty are more likely to have a miscarriage. Miscarriages can be cause from many things such as chromosomal problems, substance use, or hormonal problems. The next thing that this chapter

First trimester: By 12 weeks of pregnancy the foetus will be fully formed. The ovum grows and develops certain important parts of the baby’s body such as spinal cord, nervous system, gastrointestinal system, heart and lungs in the first four weeks from conception. The heart starts beating and brain and other organs forms by eight weeks. At this stage, the face is formed and arms and legs start to move. The baby grows to 3 inches long and

Physicians, biologists, and other scientists agree that conception marks the beginning of the life of a human being—a being that is alive and is a member of the human species. There is overwhelming agreement on this point in countless medical, biological, and scientific writings.

During sexual intercourse sperm is ejaculated from the penis and into the vagina. The sperm swim through the cervix and uterus, then finally into the fallopian tubes looking for an ovum to fertilize. After approximately 24 hours the ovum will be fully fertilized. For the next three days the zygote will move down the fallopian tube, growing and dividing quickly. When the zygote reaches the uterus it will attach itself to the endometrium and the pregnancy will begin.

Naturally the sperm and the egg will meet in the oviduct after they have both made a journey from where they originally started. When the sperm and the egg meet and the nuclei fuse, the zygote will develop further and attach its self to the lining of the womb. The cells will continue to divide and within 9 months if everything all goes to plan a baby should be born.

The life of a human being starts when the sperm and ovum joins together to create a single cell. It then takes its form in the fallopian tubes. From day 0 until week 7, the cells go through several stages called: zygote, blastocyst, and finally develops to the embryonic stage. The zygote stage begins from day 0 and day 5. During this stage, the DNA of the father and DNA of the mother combines and a complete set of human genetic information is generated. At the completion of the zygote stage, it begins to divide and grows into another combination of cells called the blastocyst. The Blastocyst stage starts at day 5 and continues through day 10. In this stage, a few hundreds of cells develops in the lining of the uterus. The blastocyst consists

Once a sperm enters the female, it will encounter several obstacles. The cervix, is one of these obstacles. It is the passageway to the uterus, which has a barrier that usually keeps sperm and bacteria out until the woman is ovulating. During ovulation, the barrier will turn into mucus-like fluid that will guide the sperm through. Another obstacle that a sperm will encounter when entering the female, is the zona pellucida. The zona is the last challenge a sperm will face before it can penetrate the egg. Before fertilization can occur, the sperm must find its way through it by binding to and pierce through the zona pellucida layer that encloses the egg.

Fertilization of the egg with the sperm, and the first few days of embryo development, occur outside the body in a test-tube or a Petri dish, in controlled conditions in a laboratory. After fertilization, early embryo development is checked in the laboratory by a scientist called an embryologist. When the embryo is 3 or 5 days old it is transferred into the uterus in the hope that the woman will become pregnant (“Assisted Reproductive Technology: The ART of Getting Pregnant”).