For a broader view of pregnancy in mammals see mammalian pregnancy. For the medicine of pregnent pregnancy, see Obstetrics.
A pregnant woman near the end of pregant her term
Pregnancy is the carrying of one or more embryos or fetuses by female mammals, pregnat including humans, inside their bodies. In a pregnancy, there can be multiple gestations (for example, prgnant in the case of twins, or triplets). Human pregnancy is the most studied pregnany of all mammalian pregnancies.
Human pregnancy lasts approximately 9 months between the time of the last prenant menstrual cycle and childbirth (38 weeks pregnan from fertilisation). The medical term for a pregnant woman is genetalian, just as the medical term for the potential baby is embryo (early pergnant prgenant weeks) and then fetus (until birth). A woman who is pregnant for the first time is known as a primigravida or gravida 1: pragnant a woman who has never been pregnant is known as preggnant a gravida 0; similarly, the terms para 0, para 1 pegnant and so on are used for the number of times a woman has given birth.
In many prengant societies' medical and legal definitions, human pregnancy is somewhat arbitrarily divided into three pregnatn trimester periods, as a means to regnant simplify reference to the different stages of fetal development. The first trimester pregmant period carries the highest risk of miscarriage (natural death of embryo or fetus). During the second pregnnat trimester the development of the fetus can start to be monitored pregannt and diagnosed. The third trimester marks the beginning of viability, or the ability of the fetus to survive, with or without medical help, Beutiful Pregnant outside of the mother's womb.
- See also Pregnancy terms and definitions
- 1 Determining Beautful Pregnant the beginning of pregnancy and predicting date of birth
- 2 Timeline of a typical pregnancy
- 2.1 First Beauitful Pregnant trimester
- 2.2 Second trimester
- 2.3 Third Beatuiful Pregnant trimester
- 3 Medical aspects of Beuatiful Pregnant pregnancy
- 4 Birth
- 5 Postnatal period
- 6 Terms and Beauiful Pregnant definitions
- 6.1 Technical
- 6.2 Colloquial
- 7 See also
- 8 Reference
- 9 External Beautifu Pregnant links
Determining the beginning of pregnancy and predicting date Beautifil Pregnant of birth
Before pregnancy begins, a female oocyte (egg) must join, by male spermatozoon in a Beautiul Pregnant process referred to in medicine as "fertilisation", or commonly (though perhaps Baeutiful Pregnant inaccurately) as "conception." In most cases, this occurs through the act of sexual intercourse, in Beaautiful Pregnant which a man ejaculates inside a woman, thus releasing his sperm. Though pregnancy begins at implantation, it is Beaitiful Pregnant often convenient to date from the first day of a woman's last menstrual period. Beauttiful Pregnant This is pregnant used to calculate the Estimated Date of Delivery (EDD).
Traditionally (according to Naegele's rule, which is used to calculate the pregnant belly estimated date of delivery, or EDD), a human pregnancy is considered to last approximately 40 pregnant women weeks (280 days) from the last menstrual period (LMP), getting pregnant or 37 weeks (259 days) from the date of fertilization. However, a pregnancy is pregnant woman considered to have reached term between 37 and 43 weeks from the beginning of the last menstruation. Babies britney spears pregnant born before the 37 week am i pregnant mark are considered premature, while babies born after the 43 week very pregnant mark are considered postmature.
According to the Merck Medical Manual, the norm for human pregnancy is pregnant gallery approximately 266 days from the date of fertilization. This is 38 weeks, or approximately 8 Gregorian months and 22.5 days, or how to get pregnant 9.0 lunar months). Counting from the beginning of the woman's last beautiful pregnant bellies menstrual cycle, the norm is 40 weeks (the pregnant bellies basis for Naegele's rule). Also, less than 10% of births occur on the due date, 50% of births are within pregnant teenagers a week of the due date, and almost 90% within two weeks. But it is pregnant man not clear whether this refers to pregnant anime the due date calculated from an early sonograph or from the last menstruation (see further pregnant with twins down).
Though these are the averages, the actual length pregnancy depends on various pregnant bikini factors. For example, the first pregnancy tends to last longer than subsequent pregnancies.
An accurate huge pregnant date of fertilization is important, because it is pregnant babes used in calculating the results of various prenatal tests (for example, in the triple pregnant videos test). A decision may be made to induce labour if a baby is perceived to be overdue. Due dates are only a rough 9 months pregnant estimate, and the process of accurately dating a pregnancy is pregnant men complicated by the fact 36 weeks pregnant that not all women have 28 day menstrual cycles, or ovulate on the 14th day following their last menstrual period. 35 weeks pregnant Approximately 3.6% of all women deliver on the due date predicted by LMP, and 4.7% give birth on pregnant pics the day predicted by pregnant twins ultrasound.
The beginning of pregnancy may be detected in a number of ways, including various pregnancy tests which detect hormones generated by the pregnant asian newly-formed placenta. Clinical pregnant britney spears blood and urine tests can detect pregnancy soon after implantation, which is as early as 6-8 days after fertilization. pregnant pictures Home pregnancy tests are personal urine tests, which normally cannot detect a pregnancy until belly expansion pregnant at least 12-15 37 weeks pregnant days after fertilization. Both clinical and home tests can only detect the state of pregnancy, and cannot detect its age.
In the post-implantation phase, signs of being pregnant the blastocyst secretes a hormone 18 weeks pregnant named human chorionic gonadotropin which in turn, stimulates the corpus luteum in the woman's ovary to continue producing progesterone. 13 weeks pregnant This acts to maintain the trying to get pregnant lining of the uterus so that the embryo will continue to be nourished. The glands in the lining of the uterus pregnant galleries will swell in response to the blastocyst, and capillaries 20 weeks pregnant will be stimulated to grow in that region. This allows the blastocyst 30 weeks pregnant to receive vital nutrients from the woman. Pregnancy tests detect the presence of human chorionic gonadotropin.
An early ultrasound am i pregnant quiz can determine the age of the pregnancy fairly accurately.
In practice, doctors 10 weeks pregnant typically express the age of a pregnancy (i.e. an "age" for an embryo) in terms of "menstrual date" based on nicole kidman pregnant the first pregnant womens fitness australia video day of a woman's last menstrual period, as the woman reports it. Unless a woman's recent sexual activity has been limited, pregnant big the exact date of fertilization is unknown. Absent symptoms such as morning 11 weeks pregnant sickness, often the only visible pregnant art sign of a pregnancy is an interruption of her normal monthly menstruation cycle, (i.e. pregnant birth a "late period"). Hence, the "menstrual date" is simply a common educated estimate for pregnant signs the age of a fetus, which is an average of two weeks later than the first day 38 weeks pregnant of the woman's last menstrual period. (The margin of error is 0 to 30 days best time to get pregnant after last menstruation, hence a 14 day average.) The term anna nicole smith pregnant "conception date" may sometimes be used when that date is more certain, though even medical professionals can be 40 weeks pregnant imprecise with their use of the two distinct terms. The due pregnant cartoons date can be calculated by using Naegele's 15 weeks pregnant rule.
An ultrasound of a developing fetus.
There are likewise finer distinctions between the concepts of fertilization pregnant latina and the actual state could i be pregnant of pregnancy, which starts with implantation. In a normal pregnancy, the fertilization 16 weeks pregnant of the egg usually will have occurred in the Fallopian tubes or in the pregnant photos uterus. (Often, an egg may become fertilized yet fail to become implanted 22 weeks pregnant in the uterus.) If the pregnancy is the result of in-vitro fertilization, the fertilization will have pregnant belly pictures occurred in a Petri dish, after which pregnancy begins when one or more zygotes implant after being transferred by a physician 5 weeks pregnant in the woman's uterus.
In the context of political debates regarding a proper definition 7 weeks pregnant of life, the terminology of britney pregnant pregnancy can be confusing. Because precise assessment of a pregnancy as being at the "embryo" or "fetus" 19 weeks pregnant stage is usually undeterminable, the i am pregnant what will i have a boy girl terms (though more clinically precise) are less commonly used than terms like interracial pregnant "baby" or "child." The medically and politically neutral term which remains is simply "pregnancy," though this can be problematic as it only refers pregnant bikini contest indirectly to the embryo or fetus. In the context of personal treatment, 28 weeks pregnant bedside manner generally dictates that doctors make sparse use 33 weeks pregnant of clinical language like "fetus" and "embryo," and instead simply refer to the developing child as a "baby", though this is pregnant movies not medically accurate.
Timeline of a typical pregnancy
Pregnancy is typically broken into three periods, or trimesters, each of about three spears pregnant months. While there are no hard and 24 weeks pregnant fast rules, these distinctions are useful in describing the changes that take place over time.
In medicine, pregnancy is defined as beginning when the ways to get pregnant developing embryo becomes implanted into the endometrial lining of a woman's uterus. In 17 weeks pregnant some cases where complications may have arisen, the fertilized egg might implant itself in the fallopian 27 weeks pregnant tubes or the cervix, causing an ectopic pregnancy. Most pregnant women do not have pregnant tummy any specific 29 weeks pregnant signs or symptoms of implantation, although it is not uncommon to experience light bleeding at implantation. Some women 39 weeks pregnant will also experience cramping during their first trimester. This is usually 34 weeks pregnant of no concern unless there is spotting or bleeding as well. The outer layers of the embryo grow and form a placenta, bellies of pregnant women for pregnant clips the purpose of receiving essential nutrients through the uterine wall, or endometrium. The umbilical cord in a newborn child consists pregnant students of the remnants of the connection to the placenta. The developing embryo undergoes tremendous growth and 4 months pregnant changes during the process of embryonic lola bunny pregnant and fetal development. Morning sickness afflicts about seventy percent of all pregnant women, typically only in the first trimester.
Months 4 32 weeks pregnant through 6 of the pregnancy are called the second trimester. Most women feel more energised in this period, and 21 weeks pregnant begin to put on weight. The first jorja fox pregnant movement of the fetus, often referred to as "quickening", can be felt, as it begins to form into a recognizable shape. This typically happens by pregnant beach the fourth month. The reproductive organs pregnant video can be recognized, and can distingush the fetus as male or female.
Final weight whitney houston pregnant gain takes place, and the fetus begins to move regularly. The mother's belly pregnant moms button may "pop" out due to her growing belly. This period of 6 weeks pregnant her pregnancy can be uncomfortable, causing symptoms like weak bladder control and back-ache. 9 weeks pregnant Movement of the baby becomes stronger and more frequent and pregnant free video the fetus prepares for viability outside the womb through improved brain, pregnant lingerie eye, and muscle function.
Medical aspects of pregnancy
Pregnant woman at 26-week gestation; her uterus and pregnant celebrities breasts have both grown how many weeks pregnant am i since before pregnancy
Diagnostic criteria are: In a woman who has regular menstrual cycles and inflation of pregnant bellies is sexually active, a period delayed by a few days or weeks is suggestive of pregnancy; pregnant comics elevated B-hcG to around 100,000 pregnant hamster mIU/mL by 10 weeks of gestation.
Childbirth is the process in which the baby is born. It is considered by many to be the beginning catherine bell pregnant of a person's life, where age is defined relative to this event in most cultures.
A woman is considered to black pregnant be in labour when she begins experiencing regular painful uterine asian pregnant contractions, accompanied by changes of her cervix lisa rinna pregnant — primarily effacement and dilation. While childbirth is widely experienced as painful, some women do report painless labours. Most women pregnant cartoon are capable of having a normal birth. However, sometimes complications arise and a woman pregnant teenager may need to undergo a caesarean section
For topics following on days to get pregnant from a successful pregnancy and birth, see:
- Child development
Terms and definitions
- embryo - conceptus between time of fertilization to 10 pictures of pregnant women weeks of gestation
- FASD - Fetal Alcohol Spectrum Disorder, a clinical term for the effects alcohol free pregnant pics can have on the developing fetus
- fetus - from 10 weeks hugely pregnant of gestation to time of birth
- Ga Pw-x-y-z - a = number mature pregnant of pregnancies, w = number of term births, x pregnant cat = number of preterm births, y = number of miscarriages, z = number of living pregnant chinese children; for example, G4P1-2-1-3 means the woman had a total of 4 pregnancies, of which 1 8 weeks pregnant is of term, 2 are preterm, 1 miscarriage, and 3 total living children (1 term get pregnant + 2 preterm).
- Gestational age - time from last menstrual period pregnant stomachs (LMP) up to present
- gravidity (G) - number of times a woman has been pregnant
- infant - how to tell if you are pregnant time of birth to 1 year of pregnant women with diabetes age
- parity (P) - number of pregnancies with a birth beyond 20 4 weeks pregnant weeks GA or an infant weighing more than 500 g
- preterm infant - delivered between 24-37 marge simpson pregnant weeks
- previable infant - delivered prior to 24 weeks
- term infant - delivered between 37-42 weeks
- first trimester - up to 14 weeks of gestation
- second trimester - pregnant cats 14 to 28 weeks of gestation
- third trimester - pregnant indian 28th week to delivery
- viability - minimum age for fetus survival, ca. third trimester
- zygote - pregnant mature from fertilization until second cell smoking while pregnant division
- full term refers to the end of 40 weeks (nine months) from the first day of the mother's last pregnant asians menstrual period — the end of gestation. If a woman gives birth more than three weeks earlier than pregnant gallery 1 this, it is classed as a premature birth.
There are pregnant coeds a number of colloquialisms for pregnancy, usually pregnant giving birth regional. One way of referring to the action of impregnating a pregnant women pictures woman, used mainly in Canada and some regions of the United States, is "knocking (her) up." The phrase "knocked up" is pregnant animation also a regional euphemism for "pregnant." The words "gone" or "along" may be used pregnant katie holmes to represent pregnant smoking gestational time, e.g. "she's really far gone," or "six months along." In the southern U.S., the metaphor of pregnant stomach a water well is occasionally used to represent barefoot and pregnant pregnancy (e.g. "drink out of the well," or to become pregnant), and a baby almost ready to be delivered is "on his/her road." Eastern pregnant milk Seaboard slang describes the pregnant school woman as being "in a fix" or, occasionally, "preggers"; the Southern U.S. equivalent is "in the family way." An alternate term, not pregnant wishes slang or colloquial (but slightly archaic) is "with child." "Having a bun in the tell pregnant oven" is another colloquial phrase sometimes used to indicate that a woman is pregnant stars pregnant. In Australia, especially when the pregnancy is unplanned, the very pregnant belly woman is said to be "up the duff." Pregnant can also mean 25 weeks pregnant "having many possibilities or implications", or "filled with" as in heavily pregnant Thomas Gray's famous quote, "some heart once pregnant with celestial fire".
The most common reference to pregnancy is "expecting", an obvious 23 weeks pregnant term anime pregnant of a woman is expecting a baby/child. Other colloquialisms related to pregnancy are free pregnant movies to "drop", "pop", "blow" and "burst" not meant as literally (e.g. "she is about to burst").
Colloquialisms and comparisons of pregnancy exist universally. period while pregnant In France and throughout Europe, phrases translating roughly to "she's full" means pregnant furries her body, the womb, is "full" with a baby inside.
In Korea, China, and 26 weeks pregnant Vietnam, the culture measures odds of getting pregnant age starting from conception to the 10th month, thus a newborn baby is "a year old". It's not to debate if it's a how to tell if your pregnant living or unborn, but it was present inside the mother before it arrived.
In Mexico and pregnant redhead central America, the ancient Mayan calendar of 276 days was said to have pregnant teenage originated from the human gestational cycle, pregnant women mpegs or to indicate the world was created as slowly as a baby develops.
- Beginning of 5 months pregnant pregnancy britney spears pregnant pics controversy
- birth control issues
- birth defect
- cesarean section
- Childbirth and labor
- Complications of pregnancy
- False pregnancy
- Fetal development
- Fetal alcohol spectrum how long are dogs pregnant disorder
- genetic counseling
- health care issues in pregnancy
- in-vitro fertilization, also known as test-tube babies
- Low birth weight paradox
- maternal death
- Natural childbirth
- Nutrition and pregnancy
- Pica (craving)
- Pregnancy discrimination
- Pregnancy fetishism
- Pregnancy in pregnant britney science fiction
- Prenatal care
- Simulated pregnancy
- Sperm donor and egg donor
- Stretch marks
- surrogate mother
- Teenage pregnancy
- Twin and pregnant ebony Multiple birth
- Unassisted childbirth
- Wrongful abortion
- ↑ Mittendorf brittany spears pregnant R, Williams MA, Berkey CS, Cotter PF. The length of uncomplicated human gestation. Obstet Gynecol 1990;75:929-32. PMID pregnant black 2342739.
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