Getting pregnant is not an easy task, but understanding the essential physiology of the process is the best place to start. In this chapter I will describe the arduous journey that sperm must make through the female genitals to reach the egg, as well as the simultaneous adventure of the egg during which it matures to become genetically ready for fertilization, erupts from the ovary, and gets grabbed by the fallopian tube, fertilized, and then hustled along into the womb at exactly the right moment to implant. Failure of the sperm or egg to make an important connection anywhere along this complicated itinerary will prevent pregnancy from occurring. The vagina is an elastic canal, about four to five inches long. At the end of this canal, in the deepest recess of the vagina, is a structure called the cervix, which is the entrance to the womb, or uterus. The uterus is a hard, muscular, pear-shaped structure with a narrow, triangular cavity inside, so small that it would barely hold a teaspoonful of fluid. Yet this is where the fertilized egg must implant itself and grow during the next nine months into a full-size baby. When the baby is ready to be born, the muscles of the uterus contract during labor to squeeze the baby out into the world.
Cowgirl and reverse cowgirl
Cervical fluid = part of discharge
Suarez, A. At coitus, human sperm are deposited into the anterior vagina, where, to avoid vaginal acid and immune responses, they quickly contact cervical mucus and enter the cervix. Cervical mucus filters out sperm with poor morphology and motility and as such only a minority of ejaculated sperm actually enter the cervix. In the uterus, muscular contractions may enhance passage of sperm through the uterine cavity. A few thousand sperm swim through the uterotubal junctions to reach the Fallopian tubes uterine tubes, oviducts where sperm are stored in a reservoir, or at least maintained in a fertile state, by interacting with endosalpingeal oviductal epithelium. As the time of ovulation approaches, sperm become capacitated and hyperactivated, which enables them to proceed towards the tubal ampulla. Sperm may be guided to the oocyte by a combination of thermotaxis and chemotaxis. Motility hyperactivation assists sperm in penetrating mucus in the tubes and the cumulus oophorus and zona pellucida of the oocyte, so that they may finally fuse with the oocyte plasma membrane. Knowledge of the biology of sperm transport can inspire improvements in artificial insemination, IVF, the diagnosis of infertility and the development of contraceptives. Passage of sperm through the female reproductive tract is regulated to maximize the chance of fertilization and ensure that sperm with normal morphology and vigorous motility will be the ones to succeed.
We all know you can achieve an orgasm from clitoral or vaginal simulation. But did you know that the cervix is also a pleasure zone? We rounded up the most pressing concerns about cervix penetration so you can get down to business worry-free. The bare-bones definition of penetration is this: any object that makes its way through or into something. Cervical orgasms are achieved by stimulating the cervix — not penetration. Nope, not at all. Plus, the os is filled with cervical mucus — playing around with that stuff is definitely not our idea of a good time. The only time the cervical opening expands wide enough for anything to pass through is on the delivery table. In short, pressure.
If you and your partner have decided to try for a baby, you may have a LOT of questions. Top of the list may be whether there is a sex position which is better than the others to help you conceive. Forget claims that missionary position is the best if you want to have a baby — the answer is actually a lot more staggering. While there is no single sex position that is better for conceiving, there are several which will help you and your partner reach deeper penetration to hopefully boost your chances of falling pregnant. Sex and relationship therapist Lianne Young , has suggested four positions which could work for you and should at least be fun to try. Get your partner to lie crossed legged on the bed, then you go and sit on his lap with your legs wrapped around his waist. Once he has climaxed stay in this position for as long as possible to hold the semen in for giving his little fellers more chance of impregnating you. This position can also be done in reverse, you facing away for him and performing the same movement.