Factors Affecting Embryonic and Foetal Development

Running head: HUMAN REPRODUCTION
HUMAN REPRODUCTION
Name of the Student
Name of the University
Author Note

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Estradiol
Ant. Pituitary
Ovaries
FSH
Uterus
Hypothalamus
LH
Antral Follicle selection
Multiplication with Granulosa cell
One dominant
Ovulation
GnRH
Formation of endometrium
Kisspeptin
Inhibin
Meiosis I in the follicle
Secondary oocyte
Foetal HcG
Foetus
Corpus Luteum
Progesteron and Estradiol
Rupture and release of secondary ooc
Corpus Luteum destroyed after 14 days of ovulation
Endometrium maintanenece
Endometrium shedding
Luteal phase
Menstrual phase
HUMAN REPRODUCTION
Figure 1: Flow chart of menstrual cycle
Source: (Created by author)
Follicular phase

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HUMAN REPRODUCTION
Genetic Factor Affecting Embryonic and Foetal Development
The sex genes of the humans control the fertilisation process as well as the
development of foetus. The dominant genes of the parent would prevail in the child
characteristics and also the genetic imbalance of the parent affect the development of the
baby. There are many studies which suggest that the genetic mutation could be seen in the
time of the crossing over process of the parent genes thus the formation of the zygote would
be affected and the divisions of cell would be stopped and the foetal development would stop
as well. The sex genes of the parent especially the genes of the mother plays a key role as the
genes would control the hormonal development and action during the period of foetal
development and the development of endometrial as well (Music 2016). The chromosomal
and genetic control of the fertilisation and the foetal development are one of the vastly
researched topic which highlighted the factor of the primary control of the foetal
development is highly dependent on the genetic factor as all other developmental factors of a
living body. Genes have the information and the control for the foetal development thus it can
be said that genes are the controller as well as the affecters of the foetal development (Rice,
Friberg and Gavrilets 2016).
Hormonal Factor Affecting Embryonic and Foetal Development
In case of fertility or the foetal development the sex hormones such as the oestrogen
and the progesterone have a large effect on the process. Theses hormones activated at the
intercourse and help the ovum to travel from the ovary to the fallopian tube where the
fertilisation occurs. Then the oestrogen controls the foetal development whereas,
progesterone controls the development of the endometrial wall where the foetus would adhere
and get the nutrition for development. All these factors are controlled by the sex hormones
and the placental hormones. Oestrogen is the main hormone which has a distinct role in the