Early Child Development Essay

When FSH is given in larger amounts than would occur in a natural menstrual cycle it results in more than one egg being ripened and matured.

FSH (Follicle Stimulating Hormone) is produced by the brain via the pituitary gland which stimulates ovarian follicles into maturing eggs. When hyper-stimulation occurs with FSH where the woman will take hormone injections daily for up to 12 days, instead of the woman just ovulating one egg, she will ovulate anywhere between 6 and 12 eggs. The more eggs increase the chance of having a good-quality embryo to transfer.

During prophase II is when spindle fibers begin to emerge, due to the condensing of chromosomes, and the disintegration of the nuclear envelope and nucleolus. In metaphase II, the individual chromosomes line up along the metaphase plate. One sister chromatid is drawn to each pole, in anaphase II, when the spindle fibers connected to each sister chromatid shorten. Around each haploid chromosome set a nuclear envelope is formed. The chromosome sets are split into new cells during cytokinesis, thus forming the four haploid cells in which each chromosome has just one chromatid. Sperm or eggs cells are the products of meiosis in humans.

In order to better understand genetics, and what makes us who we are, it is important to first understand cell division/reproduction. Mitosis is the division of the nucleus that produces two daughter cells identical to themselves and to the original cell. Cytokinesis, which is the division of the cytoplasm, follows this process. The process of mitosis has five stages that are proceeded by interphase, which is a period for cell growth and development. Mitosis begins with prophase, which is when chromatids condense, centrosomes move to opposite poles, and mitotic spindles form from centrosomes. Prometaphase follows, during which the nuclear membrane disintegrates. During metaphase, the chromosomes line up in the middle on the equatorial plate,

As soon as sperm cells are deposited in the female reproductive tract and pass the cervical mucus, they undergo many biochemical and physiological changes, including changes in the pattern of sperm motility known as hyperactivation, and the sperm become competent to fertilize an oocyte, in a process called capacitation 21,22. The biochemical changes that occur in this process include an efflux of cholesterol from the plasma membrane leading to an increase in membrane fluidity and permeability to bicarbonate and calcium ions which results in an increase in bicarbonate (HCO3-) concentration and intracellular pH, Ca2+, and cyclic adenosine monophosphate (cAMP) levels. 4,23.

Fertilization is a complex process which involves the fusion of the male and female gametes to one another. The male sperm cell must reach and unite with the ovum of a female to form a zygote, leading to the development of an embryo. This multifaceted

Ovulation is the first stage of pregnancy, this is when an egg is released from the ovaries. Every 28 days, cysts are formed on the ovaries; once the cysts burst an egg is released. The egg then starts to travel down the fallopian tubes towards the uterus. Fertilisation

The sperm meets the egg so they can produce a baby. The egg develops in a woman's ovary to the womb. The womb is just another word for uterus which just holds the baby until it is ready to come out. The egg and sperm are put together to achieve unassisted fertilization which is when the women is unable to get pregnant, The egg cell contains mitochondria, which supplies the energy for the baby to feed off of. The sperm must get through the thick cell membrane to get to the egg cell. Once inside the egg, a chemical reaction takes place to keep other sperms from gaining entry. Meanwhile, the successful sperm cell will lose its tail while its dna packed head will fuse with the nucleus of the egg.(eHow.com) A fertilized egg cell is known as a zygote. Fallowing fertilization, the zygote undergoes continuous cell division, which eventually produces a child' .The female reproductive system is designed to carry out several functions. It produces the female egg cells necessary for reproduction, called the ova or oocytes. The system is designed to transport the ova to the site of

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.

The biological causes that can possibly imperative process of healthy conception and both female and male sexes I menopause for women, and stability for either sex. furthermore effects such as vitamin deficiencies can also cause impaired conception. Some infertility problems happen from birth. The regular process of ovulation and fertilization if they are not in sync, can cause infertility problems. The reasons for infertility involve one or both sexes. For males these can include abnormal sperm production and/or function such a thing that defects, health problems, and even due to prior surgeries performed on the inguinal region. When there is a presence of an large fans in the testicles of email, I can also affect the blood flow and sperm,

As previously stated the process through which follicles enlarge and release a mature egg into the fallopian tube is most commonly known as ovulation. The ovulation cycle is divided into two parts with the follicular phase being the beginning part in which the egg matures. The ovulatory phase then begins during the middle of a female’s menstrual cycle in which cervical fluids increase and become more fertile. An increase in the LH hormone levels affect the ovarian follicle causing a hole, or “stigma” to appear on the surface of the follicle. At this point in the course of ovulation, the egg is pushed down the fallopian tube into the uterus where it will wait 12-24 hours to be fertilized by a sperm cell before it disintegrates.

During fertilization, Sperm penetrate into MII-arrest oocyte and trigger oocyte by increasing in intracellular calcium (Miyazaki et al., 1993). High level of intracellular calcium that is essential for cellular signaling lead to oocyte activation, meiosis resumption, cortical reaction to block polyspermy and then zygote development. Following egg activation and resumption of the cell cycle, sperm-egg fusion leads to sperm head decondensation and anaphase II plate formation, the second polar body extrusion and recruitment and translation of maternal mRNAs (Cascio and Wassarman,

After puberty every month one egg in one of the two ovaries matures and is then sent out to the fallopian tubes. There are two fallopian tubes, one connected to each ovary. The fallopian tubes meet in the middle in a structure called the uterus. Each month when the egg is released from the ovaries, which is called ovulation, hair-like projections in the fallopian tubes help push the egg along the tube to its destination. The fallopian tubes are not directly connected to the ovaries so when an egg is released it is caught by a fimbria, which facilitates getting the egg from the ovaries to the fallopian tubes. The egg is also pushed along the fallopian tubes by contractions in conduction with the cilia (3).

Folliculogenesis is the production of follicles in the ovaries of female reproductive system. Every month females go through their ovarian cycle, in which the ovaries produce follicles that help to carry out the egg cell necessary for reproduction. This egg cell is carried out to be fertilized by a sperm cell received from males during sexual intercourse. If the egg cell is not fertilized by the sperm cell, then the female ends up going through the menstrual cycle in which the egg is expelled and the monthly bleeding begins and persists its monthly course. The topic of folliculogenesis may be overlooked, but when researching about the topic it is seen how important this cycle is in reproduction. This cycle lays out the platform for reproduction every month, without this cycle the proper hormones would not be able to be produced in the system.

During sexual intercourse or sexual activity, a substance known as semen, which is comprised of salt, water and other bodily fluids aid the sperm for its travel through a woman’s vagina, to her uterus to then attach to an egg. This is the process called conception that allows for the growth of a baby within her womb.