Tuesday, 27 August 2013

Understanding the Conception, Ovulation and Fertilization

THE CONCEPTION PROCESS
Let's be honest while most of us enjoy or are at least quite intrigued by the act of conception, few of us understand what transpires between the extremely fun part of the process and the part where you start saving up for another human's college education.

Women are born with millions of immature eggs, which are contained in multicellular structures called follicles. Roughly once a month, the hypothalamus sends a signal to the pituitary gland to release follicle-stimulating hormone. This hormone prompts several follicles small, fluid-filled cysts to develop into mature eggs.

One of these will grow dominant over the others and, within two to three days following its maturity, the egg will react to the release of a luteinizing hormone it stimulates the sex hormones needed for pregnancy and push through the wall of the ovary. The follicle that initially released the egg sends out a call for increased estrogen production. This estrogen is the body's cue that an egg is now mature.

This egg only has 24 hours to find its partner: a sperm cell that can penetrate its outer layer. It's normal for 3 out of 10 sperm cells to be abnormally formed, and for 4 out of 10 to be bad swimmers. The odds are poor for any single sperm cell which may be a male or a female sperm cell for one thing, it has about a quarter-billion competitors that will be joining it in the vagina.

Within minutes of ejaculation, most of the sperm cells will die due to the acidic nature of the vagina. They're viewed initially at least by the woman's immune system as foreign bodies that should be destroyed. From there, they must enter the cervix, swim through cervical mucus, enter the uterus and find the opening to the fallopian tube; and once they're there, if no egg is present or on the way, it's been a fruitless journey for the hard-charging survivors.

But how does the egg make its own arrival in the fallopian tube? How is it fertilized? And why is a college education so expensive for the product of a fertilized egg? In order to understand the conception process, first we must understand ovulation, and it just so happens to be what we'll discuss in the next section.

THE OVULATION PROCESS
Females are born with millions of immature eggs, hundreds of which will mature in their lifetimes. Each egg is about the size of a pinhead.

Women get their periods in cycles that occur about every 28 days, though it's normal for cycles to last 21 to 35 days, or even 45 days for young women. Between periods, women ovulate, releasing a mature egg from one of the ovaries. Ovulation usually occurs about a week before or after a woman's period, although ovulation can be quite irregular and can occur even during the period. Generally, however, counting from the last menstrual period, most women will ovulate sometime between day 11 and day 21.

Some women are able to feel an ache in the ovary area during ovulation. It's also possible to detect ovulation through a change in cervical secretion, which will be wetter and more slippery directly before and during ovulation. Ovulation usually causes a small dip in body temperature, followed by a spike, and women often measure their temperatures when trying to detect ovulation. Ovulation may also coincide with an increased sex drive, light spotting, a feeling of being bloated and even heightened senses, such as taste or smell.

Normally, one egg passes from either of the ovaries through the fallopian tubes. This only happens once per cycle. Sometimes two eggs (or, rarely, more) are released within a single 24-hour span. If both eggs are fertilized, it can result in fraternal twins.

The fallopian tube is where fertilization occurs. Each ovary is attached to a fallopian tube, and the opening from ovary to fallopian tube is about half an inch (13 millimeters) in diameter, but narrows down to a much smaller opening at the other end. Inside the fallopian tubes are tiny hairs called cilia. They help pass the egg through the tube from the ovary toward the uterus. The entire journey takes several days, during which the egg exists in a perfect environment that provides it with nutrients.

Meanwhile, the uterus prompted by signals released by the follicle that formed the egg has formed an internal lining (endometrium) rich in blood and nutrients that's prepared to house and nurture the egg should it become fertilized. If no fertilization occurs, the egg disintegrates into the uterine lining that will soon pass from the body during a woman's period.

THE FERTILIZATION PROCESS
As long as a sperm cell is alive in the fallopian tube, it's capable of fertilizing an egg. If there's no egg in the fallopian tube, there's no chance of fertilization. The fallopian tubes are about four inches (10 centimeters) long and transport the egg from the ovary to the uterus. They also provide sperm that make it that far with nutrients and a safe environment, the same kind the egg enjoys as it passes through. Of the millions of sperm cells that initially enter the cervix, there may be anywhere from one to a couple hundred that arrive at the fallopian tube.

Eggs will survive about a day after they're released from the ovaries. If not fertilized, they'll break down. It's only during this day that a woman can become pregnant, though it may be a result of a sexual encounter days earlier, since sperm can survive in the fallopian tubes for a few days.

When an egg does pass through, the sperm have receptors that allow them to smell the eggs, which are surrounded by cells releasing the sweet scent: progesterone. Sperm cells most definitely become very active when an egg is present. In fact, progesterone makes sperm become so active that they slough off layers of proteins. Both the surge in activity and the loss of proteins enables sperm to pierce the egg. This process is called capacitation. Once this occurs, the sperm only have a few hours to live. Only a few perhaps half a dozen or less sperm cells will ever share proximity with the egg.


How does the sperm cell actually penetrate the egg? The head of the sperm, once making contact with the exterior of the egg, will more or less pop, releasing enzymes that allow it to cross through the barrier. Once a sperm cell penetrates the exterior of the egg, fertilization occurs; its DNA payload is delivered as the sperm is absorbed by the egg. The genetic blueprint of the child is now set in stone. Once a single sperm enters the egg, the egg's protective protein covering changes and doesn't allow other sperm to enter. From one egg that has been fertilized by one sperm cell, encoded genetic information coupled with cell growth will eventually create an entire human being.

2 comments:

  1. Naked Tamil aunty ass hole fucked by young guy in doggy style on bed in hotel room




    Indian black cock with tight pussy nude girls xxx hardcore live latest xxx




    Unmarried young girl tight pussy injected first time,School Girl Tight Pussy Hardcore sex xxx




    Desi girlfriend smoking hot showing her boobs cunt and ass teaser pics,indian Desi Couple fucking in Forest




    sexy hot nude girl porn sex video desi boobs doodhwali indian girl




    Indian desi sister pure latest sexy nude video download,Vidya Balan Unseen Hot Photos in Saree




    My Round Big Ass Mother Forced Fucked By My Five College Friend




    Sexy Hot Nepali Hindu Baby Cropped Public Sex,Pakistani Girls Shaved Pussy Show And Big Ass Pictures




    Indian deshi girlfriend showing her hairy beautiful pussy,Most beautiful muslim girls in the world




    Tamil Mallu Housewife Bhabhi Big Dirty Ass Ready For Best Fuck




    Beautiful unsatisfied sexy north Indian housewife nisha fucked with her new young boyfriend




    Katrina Kaif Semi Naked in Stylish Post Showing Her Big Soft Boobs and Cute Nipples




    Indian Gay Boys hot kisses showing their Cocks,Real fucked hard pics of nude desi wife by her husband




    South Indian Busty Porn-star Manali Ghosh Double Penetration Sex For Money




    South indian hot bhabhi enjoying her first night with her husband in bedroom




    sex video of tight pussy of desi college girl banged by boyfriend




    Desi Arab wife in burkha sucking penis of her husband,Desi Couple Homemade Awesame Sex Scandal




    Hot arabian college teen Jasmin exposing her sexy booty and fucking with dildo on cam




    Desi indian naughty wife oilly pussy and hot young ass fuck,Indian Mom Sucks Her Son's Big Cock




    Priya Rai fucked and facialized by a huge hard cock,Katrina Kaif Posing Nude for Holly Photoshoot




    Hot Bangla beauty showing off herself nude for her lover exclusive MMS capture




    Big boobed Village sister fucked her brother,Indian Muslim Girl Playing With Boobs and Showing Her Tight Pussy

    ReplyDelete
  2. Here priestEka we are here to make your dream of pregnancy and other related human diseases over in your life have a happy home. Wespecialise in helping people with their problems such as.
    1 bringing back your lost .
    2 spell to improve your businesses.
    3 spell to bring back your ex-lover( bring back your husband/wife/boyfriend/girlfriend)
    4 spell for business protection from colleague.
    5 spell to prevent witchcraft from your life and that of your family.
    6 spell to prevent you from accident during your business journey.
    7. spell to get employment easily
    We also specialise in providing solutions in any of this spiritual gynaecology diseases affect human existence such as:
    1 fibroid, asthma, ALL STD,
    2 weakness of man organ
    3 infections of all kind (yeast infection)
    4 blockage from the fallopian tube
    5 cyst. From the ovaries
    6 unpleasant smell from the virgina
    7 irregular menstration, menopause
    8 infertility for easy Conception.
    9.skin diseases, Toilet infection and bad body odor…….Etc..
    10.Watering sperm (low sperm count) not able to get woman pregnant.
    Simply contact the spiritualist PriestEka on (dreka14demons@gmail.com) to get his Herbal Medication to cure your disease and put yourself on a motherhood side of life..
    (No more adoption, with PriestEka your problem will solve and you will have your child with ease.
    Contact us at (dreka14demons@gmail.com) your solution home!

    ReplyDelete