Physical Development Through The Life Stages

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

The first trimester begins with the conception that leads to the sperm reaching to the egg within a day. The fertilized egg is to await in the uterus wall where the placenta also starts to form. Web MD states in that moment the genetic makeup of the fetus and even the sex is already set in motion. By the fourth week of fertilization,

The embryonic stage begins on the third week after conception and lasts until the eighth week after conception. It is during this third week that the embryo begins to develop a neural tube, which will then become the spinal column and brain. Some cells are unique in that they come together to form neural progenitor cells, which then duplicate several times until some produce neurons. Other structures that begin to form in the third week are the digestive system and circulatory system. During the fourth week structures such as the head, eyes, nose, ears, and mouth begin to take shape. In addition, the heart continues to develop and starts to produce a beat. By week five, tiny outgrowths that will transform into arms and legs, start to appear. Shortly after, the arms, hands, legs, and feet all begin to grow and around 53 days after conception, the fingers and toes separate.

At 8 cells it will start dividing up but only into tighter cells around it and this will create a wall where the baby will be grown inside of. A you know the sperm cell has settled in the next step is the creating of the placenta. The placenta starts to form around which is what is used to nourish a baby. While this is occurring the embryo is making its way down the fallopian tube where it will bury itself into the wall of the womb. This stage where the embryo connects to the wall of the womb is called implantation. By this time the embryo is letting out chemicals into the body that travel around which help show that you are pregnant in the pregnancy tests. From there the embryo will start to develope different cells and

The first 1-4 days during pregnancy the fertilized egg starts to divide as it travels down the “Fallopian Tubes”. Days 5-9 is when the zygote implants the lining and begins to prepare nourishment to the baby. From day 20 to day 35 week 5 thhe embryo triples in size. By the end of week 8-11 the stomach is forming, the kidneys are functioning and genitals have begun to from. Lastly, the fetus is nw two inches long. Urination occurs.

Pregnancy usually lasts for approximately 9 months and involves three stages; the first trimester, the second trimester and the third trimester. The first trimester goes from week 1 to week 12 and involves a lot of hormonal changes within the mother, which cause symptoms of pregnancy to occur. The most obvious sign of pregnancy is the menstrual cycle stopping. Some women may also experience:

The video, “From Conception to Birth” paints a vivid picture of the process of conception and birth. The process of having a baby involves the conception, development of the fetus, and the birth of the child. Childbirth is a life-changing event that leaves an impression on every parent's life. First, the process of having a baby starts with conception, the union of an egg from the mother and a sperm from the father.

The embryonic stage begins two weeks after conception, after implantation has taken place, and lasts until week eight. During this time, some body structure begins to appear and by week eight, the embryo has all basic organs and body parts. They are all very fragile and

In the last month approximately one week before birth the fetus stops growing having reached average weight of 7 and a half pound approximately a 20 inches length. Adipose pads continue to form, organ systems work more efficiently, heart rate increases. Until the moment of birth the fetus will have been in the belly approximately 266 days, although it is estimated that the gestation age is of 280 days, since the majority of the doctors assign date to the pregnancy from the last menstrual period of the

A baby is formed when a sperm makes its long journey and finally meets an egg. Usually, the fetus

Arms and legs start to grow and eyes and ears begin to form. Tissue grows that will become your baby's spine and other bones. Baby's heart continues to grow and beats at a regular rhythm. The baby's arms and legs have grown longer and hands and feet begin to form into little paddles. The baby's brain continues to grow and the lungs start to form. Week nine, nipples and hair follicles form and elbows develop along with essential organs. Week ten, the baby’s eyelids develop and begin to close and the outer ears begin to take shape. The baby's facial features become more distinct, and by the end of the 10th week of pregnancy, the baby is no longer an embryo but is now a fetus. Weeks eleven through fourteen, the baby's eyelids close and will not reopen until about the 28th week. Baby's face has formed. Appendages are long and thin. The fingers and toes now have nails and genitals appear. The head is roughly half of baby's size. Weeks’ fifteen through eighteen, the baby's skin is almost transparent. Lanugo, or fine hair, develops on baby's head. Muscle tissue and bones continue developing, and bones solidify. The baby becomes increasingly

The ovum must be fertilized in order for a woman to be pregnant, or else the cycle will restart over the coarse of menstruation. A female reproductive cycle typically takes on average 28 days. During ovulation, ovaries supply developed ovum while affected by the follicle stimulating hormone and luteinizing hormone. About two weeks later, the cells in the ovaries called oocytes become fully developed into an ovum. These ovums grow and are released through the coarse of each cycle. After the release of the mature ovum, it is captured by fimbriae and guided through the fallopian tube leading to the uterus.

Now, what about when there is no developing fetus? What does the uterus do then? Well, each month when the female releases an oocyte - which is just an unfertilized egg - that oocyte has the potential to become a baby, but only if it is fertilized by a male's sperm. So each month the uterus prepares for the possibility of fertilization.

The follicle ruptures and releases the ovum as it travels through the fallopian tube it meets with the sperm, during this stage the sperm and ovum crate a zygote which will become the embryo.

To understand the controversy surrounding human cloning and when human life starts, one must know the stages of pregnancy. The definition of conception is the point where the sperm fertilizes the ovum. Within 12 hours, the pronuclei, or the small packages of DNA from both the male and female intermingle and a