Critical Events (Prenatal Development)

• Began with thousand of eggs in a mother ovaries. Therefore only one eggs that will be released to the fallopian tube soon to be fertilised. 
• Then continue to be in form of blastocyst and starting to take on new identities till being more significant in the embryonogenesis process of development.
• Zygote continue to move on to the fallopian tube until it comes to uterus. In the same time, through this process will be growing larger as the cells keep dividing. It will also forming hundreds of interconnected celss that known as blastocyst.

• Starting continue to form some new organ on the body. Week by week the body start have a heart that will be pumping then it will also showing some limbs. After that, the body of the embryonic will have the eyes, ear and teeth. Through this process will likely to start to look like a human. 

Aspect of human development that are impacted by these critical events 

• What  mother consumed during pregnancy also program the way their body will respond to different types of food in later life.  For example, the mother who consumed low fats, sugar, and calories will cause the child to suffer from Type 2 Diabetes because his diet in later life is the total opposite of what his mother consumed. In contrast, another one was able to cope with his consumption of high fats, calories, and sugar.
• Mother’s emotional condition during pregnancy also have a great impact on you.   The more days the women spent without electricity, the higher the women’s stress levels were, which in turn lead to lower IQ and language development among the children born. All because of the stress hormone, cortisol released which then enter the babies’ blood stream through the placenta. It was found that cortisol has really greatly influenced the programming in the fetus including its growth, modifying the tissue development, and long-lasting effects on gene expression.
• Genetic disorder ectodermal dysplasia.
  Moving on to around 15 days post-conception, Melanie Gaydos, is an internationally renowned model. Melanie suffers from ectodermal dysplasia, which has caused some disfiguring features that have led many to facial, hair and skin abnormalities. Notwithstanding these difficulties, Melanie has forged a highly successful career that must surely encourage others who have overt disabilities and wish to plough their furrow. The mutation found in Melanie's TP63 gene explains the genetic cause of her condition, which begins to alter otherwise normal development at the 15-day stage.
• Dextrocardia and complete situs inversus
  Randy Foye is a champion basketball player who has dextrocardia, and complete situs inversus, in which the positions of all of his organs are reversed. This variation from normal occurs at about 19 days post-conception. Dextrocardia with Situs Inversus is a rare heart condition characterised by abnormal heart positioning. In this condition, the tip of the heart is positioned on the right side of the chest. Additionally, the position of the heart chambers and the visceral organs such as the liver and spleen are reversed. However, most affected individuals can live everyday life without associated symptoms or disability.
  
  
  

1. Prenatal stress affects the unborn child's brain development especially during the fetal stage.
2. Birth injuries from maternal infections.
3. Inadequate levels of this B vitamin during conception and the first few weeks of pregnancy.
4. Broken vital communication between cells
5. The mother’s diet.

1. Cortisol, a stress hormone, is important for both body and fetal growth. A woman who is stressed out for a long period of time throughout her pregnancy will have high levels of cortisol, which can affect the brain development of her unborn kid. Prenatal stress has an impact on the unborn child's chances of depression, psychosis, and heart disease later in life. This will have an impact on the unborn child's cognitive and physical development later in life especially during middle childhood to young adulthood. Later in life, the child will be hypersensitive to stress and is more prone to develop mental disorders such as anxiety or depression, as well as health issues such as heart disease.
2. Certain types of maternal infections during pregnancy can be very harmful to the baby's health and development. If left untreated maternal infections can lead to brain damage and birth injuries like cerebral palsy. Other than that, untreated infections might harm a fetus and may increase the risk of miscarriage.
3. Because these body components are developed early in the first trimester, not getting enough of this B vitamin at the time of conception and in the first few weeks of pregnancy has been associated to brain and spine problems.
4. the broken communication between the cells, cause cells divided into two or more clumps of cells behave independently from each other. All of the cells build separate human beings which can be two, three or more identically.
5. The mother's diet has a significant influence on prenatal development. The healthier the mother is before and during pregnancy, the healthier the baby will be. Birth defects may occur if the mother is overweight or underweight. Overweight mothers put their fetus's health at danger. These fetuses can be bigger than normal, which might cause complications during birth. The mother can also teach the unborn baby dietary habits that they will carry with them for the rest of their lives.

• Physical development – refers to changes in the bodily structures and functions of different body parts. 
• Cognitive development – refers to intellectual development; it deals with abilities, such as processing information that includes thinking, imagination, memorizing, learning, reasoning, decision making. 
• Language development – refers to changes in the use of speech 
• Social development – refers to changes in forming relationships/interactions with others. 
• Emotional development – refers to changes in feelings; causes, and expressions of emotions/ feelings. 
• Moral development – refers to changes in reasoning about “Right” or “Wrong”. 
• Gender development – refers to changes in understanding the roles played by males and females. 
• Psychosexual development- the process during which personality and sexual behavior mature through a series of stages. 
• Prenatal development- start with firtilization, in the germinal stage of embryonic development, and continues in fetal development  

• The First Eight Weeks:the embryo starts as one cell with  
• Before day fifteen: Cells are identical however on day fifteen, cells start to become more specialized. 
• After day fifteen: Cells transform into over four hundred different types that make up every part of the body. 
• Week three: the embryo is shaped like a flat disk. The flat disk folds together and creates a tube that later becomes the spinal cord. After the formation of the tube, a collection of muscle cells at the center of the embryo starts to assemble to form the heart. As emphasized in the documentary, the heart is smaller than a grain of sand, yet the fetus has a heartbeat. 
• Week five: The heart starts to pump blood continuously throughout the body 
• Six weeks: The body structure began to form. 

•  Prenatal development is the process that occurs during the 40 weeks prior to the birth of a child, and is heavily influenced by genetics. 
•  Every person is made up of cells containing chromosomes, which are the genetic material that determines many things about a person, such as aneye and hair color, biological sex, and personality traits. 
• Gene expression in organisms is carefully regulated to allow the organisms to adapt to differing conditions. Genes can either be dominant or recessive, meaning they can either be expressed or hidden. 
•  Gene regulation is the process by which cells differentiate: while some cells develop into brain cells, others develop into liver cells, intestinal cells, or the sexual reproductive organs.