The following is a list of the "G" codes for MeSH

Mesh

Mesh consists of semi-permeable barrier made of connected strands of metal, fiber, or other flexible/ductile material. Mesh is similar to web or net in that it has many attached or woven strands.-Types of mesh:...

. It is a product of the United States National Library of Medicine

United States National Library of Medicine

The United States National Library of Medicine , operated by the United States federal government, is the world's largest medical library. Located in Bethesda, Maryland, the NLM is a division of the National Institutes of Health...

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Source for content is here. (File "2006 MeSH Trees".)

--- reproductive and urinary physiology

--- embryonic and fetal development

--- embryonic development --- cell lineage --- embryo implantation --- embryo implantation, delayed --- embryonic induction --- twinning, monozygotic --- fetal development

Fetal development

Prenatal or antenatal development is the process in which a human embryo or fetus gestates during pregnancy, from fertilization until birth. Often, the terms fetal development, foetal development, or embryology are used in a similar sense.After fertilization the embryogenesis starts...

 --- fetal movement

Fetal movement

Fetal movement refers to motion of a fetus caused by its own muscle activity. Locomotor activity begins during the late embryological stage, and changes in nature throughout development. Muscles begin to move as soon as they are innervated. These first movements are not reflexive, but arise from...

 --- fetal organ maturity --- fetal viability --- fetal weight --- gestational age

Gestational age

Gestational age relates to the age of an embryo or fetus . There is some ambiguity in how it is defined:*In embryology, gestational age is the time elapsed since conception. This interval is also termed fertilisation age....

 --- organogenesis

Organogenesis

In animal development, organogenesis is the process by which the ectoderm, endoderm, and mesoderm develop into the internal organs of the organism. Internal organs initiate development in humans within the 3rd to 8th weeks in utero...

 --- sex differentiation

--- estrous cycle

Estrous cycle

The estrous cycle comprises the recurring physiologic changes that are induced by reproductive hormones in most mammalian placental females. Estrous cycles start after puberty in sexually mature females and are interrupted by anestrous phases or pregnancies...

--- anestrus --- diestrus --- estrus --- estrus synchronization --- metestrus --- proestrus

--- fertilization

--- ovum transport --- sperm capacitation --- sperm motility

Sperm motility

Sperm motility describes the ability of sperm to move properly towards an egg. This can also be thought of as the 'quality' of the sperm, which is a factor in successful pregnancies, as opposed to the 'quantity'. Sperm which do not properly 'swim', will not reach the egg in order to fertilize it...

 --- sperm-ovum interactions --- acrosome reaction

Acrosome reaction

During fertilization, a sperm must first fuse with the plasma membrane and then penetrate the female egg in order to fertilize it. Fusing to the egg usually causes little problem, whereas penetrating through the egg's hard shell can present more of a problem to the sperm...

 --- sperm transport

--- gametogenesis

Gametogenesis

Gametogenesis is a biological process by which diploid or haploid precursor cells undergo cell division and differentiation to form mature haploid gametes. Depending on the biological life cycle of the organism, gametogenesis occurs by meiotic division of diploid gametocytes into various gametes,...

--- oogenesis

Oogenesis

Oogenesis, ovogenesis or oögenesis is the creation of an ovum . It is the female form of gametogenesis. The male equivalent is spermatogenesis...

 --- vitellogenesis

Vitellogenesis

Vitellogenesis is the process of yolk formation via nutrients being deposited in the oocyte, or female germ cell involved in reproduction. It starts when the fat body stimulates the release of juvenile hormones and produces vitellogenin protein. It occurs in all animal groups lower than the mammals...

 --- spermatogenesis

Spermatogenesis

Spermatogenesis is the process by which male primary germ cells undergo division, and produce a number of cells termed spermatogonia, from which the primary spermatocytes are derived. Each primary spermatocyte divides into two secondary spermatocytes, and each secondary spermatocyte into two...

 --- sperm maturation

--- menstrual cycle

Menstrual cycle

The menstrual cycle is the scientific term for the physiological changes that can occur in fertile women for the purpose of sexual reproduction. This article focuses on the human menstrual cycle....

--- fertile period --- follicular phase

Follicular phase

The follicular phase is the phase of the estrous cycle, during which follicles in the ovary mature. It ends with ovulation. The main hormone controlling this stage is estradiol....

 --- follicular atresia

Follicular atresia

Follicular atresia is the break-down of the ovarian follicles. It occurs continually throughout a woman's life, as she is born with approximately 400,000-600,000 follicles and will only ovulate around 400 in her lifetime....

 --- luteal phase

Luteal phase

The luteal phase is the latter phase of the menstrual cycle or the estrous cycle . It begins with the formation of the corpus luteum and ends in either pregnancy or luteolysis...

 --- menstruation

Menstruation

Menstruation is the shedding of the uterine lining . It occurs on a regular basis in sexually reproductive-age females of certain mammal species. This article focuses on human menstruation.-Overview:...

 --- ovulation

Ovulation

Ovulation is the process in a female's menstrual cycle by which a mature ovarian follicle ruptures and discharges an ovum . Ovulation also occurs in the estrous cycle of other female mammals, which differs in many fundamental ways from the menstrual cycle...

 --- anovulation

Anovulation

An anovulatory cycle is a menstrual cycle during which the ovaries do not release an oocyte. Therefore, ovulation does not take place. However, a woman who does not ovulate at each menstrual cycle is not necessarily going through menopause...

 --- luteinization --- corpus luteum maintenance --- luteolysis

Luteolysis

Luteolysis is the structural and functional degradation of the corpus luteum , which occurs at the end of the luteal phase of both the estrous and menstrual cycles in the absence of pregnancy. In domestic animals, luteolysis is inititated by the hormones prostaglandin F2alpha and oxytocin...

 --- ovulation inhibition --- superovulation

--- postpartum period

--- lactation

Lactation

Lactation describes the secretion of milk from the mammary glands and the period of time that a mother lactates to feed her young. The process occurs in all female mammals, however it predates mammals. In humans the process of feeding milk is called breastfeeding or nursing...

 --- milk ejection

--- pregnancy

Pregnancy

Pregnancy refers to the fertilization and development of one or more offspring, known as a fetus or embryo, in a woman's uterus. In a pregnancy, there can be multiple gestations, as in the case of twins or triplets...

--- gravidity

Gravidity

In medicine, gravidity refers to the number of times a woman has been pregnant, regardless of whether the pregnancies were interrupted or resulted in a live birth....

 --- labor, obstetric --- cervical ripening --- labor onset --- labor stage, first --- labor stage, second --- labor stage, third --- trial of labor --- uterine contraction --- labor presentation --- breech presentation --- maternal age --- pregnancy in adolescence --- maternal-fetal exchange --- parity

Parity

Parity may refer to:* Parity , a symmetry property of physical quantities or processes under spatial inversion* Parity , indicates whether a number is even or odd...

 --- parturition --- term birth --- placentation

Placentation

In biology, placentation refers to the formation, type and structure, or arrangement of placentas. The function of placentation is to transfer nutrients from maternal tissue to a growing embryo...

 --- pregnancy, animal --- litter size --- pregnancy, high-risk --- pregnancy maintenance --- corpus luteum maintenance --- pregnancy, multiple --- quadruplets --- quintuplets

Quintuplets

Quintuplets is an American sitcom that aired twenty-two episodes on FOX from June 16, 2004 through January 12, 2005. The program starred Andy Richter and Rebecca Creskoff as parents of a family of quintuplets and their various adventures in parenthood....

 --- superfetation

Superfetation

Superfetation is the simultaneous occurrence of more than one stage of developing embryo in the same animal. In mammals it manifests as the formation of a fetus from a different menstrual cycle while another embryo is already present in the uterus...

 --- triplets

Multiple birth

A multiple birth occurs when more than one fetus is carried to term in a single pregnancy. Different names for multiple births are used, depending on the number of offspring. Common multiples are two and three, known as twins and triplets...

 --- twins

TWINS

Two Wide-Angle Imaging Neutral-Atom Spectrometers are a pair of NASA instruments aboard two United States National Reconnaissance Office satellites in Molniya orbits. TWINS was designed to provide stereo images of the Earth's ring current. The first instrument, TWINS-1, was launched aboard USA-184...

 --- twins, dizygotic --- twins, monozygotic --- pregnancy outcome --- live birth

Live birth

In human reproduction, a live birth occurs when a fetus, whatever its gestational age, exits the maternal body and subsequently shows any sign of life, such as voluntary movement, heartbeat, or pulsation of the umbilical cord, for however brief a time and regardless of whether the umbilical cord or...

 --- stillbirth

Stillbirth

A stillbirth occurs when a fetus has died in the uterus. The Australian definition specifies that fetal death is termed a stillbirth after 20 weeks gestation or the fetus weighs more than . Once the fetus has died the mother still has contractions and remains undelivered. The term is often used in...

 --- pregnancy rate

Pregnancy rate

Pregnancy rate in infertility treatment is the success rate for pregnancy. It is the percentage of all attempts that leads to pregnancy, with attempts generally referring to menstrual cycles where insemination or any artificial equivalent is used, which may be simple artificial insemination or AI...

 --- pregnancy trimesters --- pregnancy trimester, first --- pregnancy trimester, second --- pregnancy trimester, third --- pregnancy, unplanned --- pregnancy, unwanted --- prenatal nutrition --- pseudopregnancy

--- reproduction, asexual

--- parthenogenesis

Parthenogenesis

Parthenogenesis is a form of asexual reproduction found in females, where growth and development of embryos occur without fertilization by a male...

--- reproductive behavior

--- contraception behavior

--- sexual behavior

--- coitus --- coitus interruptus

Coitus interruptus

Coitus interruptus, also known as the rejected sexual intercourse, withdrawal or pull-out method, is a method of birth-control in which a man, during intercourse withdraws his penis from a woman's vagina prior to ejaculation...

 --- courtship

Courtship

Courtship is the period in a couple's relationship which precedes their engagement and marriage, or establishment of an agreed relationship of a more enduring kind. In courtship, a couple get to know each other and decide if there will be an engagement or other such agreement...

 --- extramarital relations --- masturbation

Masturbation

Masturbation refers to sexual stimulation of a person's own genitals, usually to the point of orgasm. The stimulation can be performed manually, by use of objects or tools, or by some combination of these methods. Masturbation is a common form of autoeroticism...

 --- prostitution

Prostitution

Prostitution is the act or practice of providing sexual services to another person in return for payment. The person who receives payment for sexual services is called a prostitute and the person who receives such services is known by a multitude of terms, including a "john". Prostitution is one of...

 --- safe sex

Safe sex

Safe sex is sexual activity engaged in by people who have taken precautions to protect themselves against sexually transmitted diseases such as AIDS. It is also referred to as safer sex or protected sex, while unsafe or unprotected sex is sexual activity engaged in without precautions...

 --- sexual abstinence

Sexual abstinence

Sexual abstinence is the practice of refraining from some or all aspects of sexual activity for medical, psychological, legal, social, philosophical or religious reasons.Common reasons for practicing sexual abstinence include:*poor health - medical celibacy...

 --- sexual harassment

Sexual harassment

Sexual harassment, is intimidation, bullying or coercion of a sexual nature, or the unwelcome or inappropriate promise of rewards in exchange for sexual favors. In some contexts or circumstances, sexual harassment is illegal. It includes a range of behavior from seemingly mild transgressions and...

 --- sexuality

Human sexuality

Human sexuality is the awareness of gender differences, and the capacity to have erotic experiences and responses. Human sexuality can also be described as the way someone is sexually attracted to another person whether it is to opposite sexes , to the same sex , to either sexes , or not being...

 --- bisexuality

Bisexuality

Bisexuality is sexual behavior or an orientation involving physical or romantic attraction to both males and females, especially with regard to men and women. It is one of the three main classifications of sexual orientation, along with a heterosexual and a homosexual orientation, all a part of the...

 --- heterosexuality

Heterosexuality

Heterosexuality is romantic or sexual attraction or behavior between members of the opposite sex or gender. As a sexual orientation, heterosexuality refers to "an enduring pattern of or disposition to experience sexual, affectional, physical or romantic attractions to persons of the opposite sex";...

 --- homosexuality

Homosexuality

Homosexuality is romantic or sexual attraction or behavior between members of the same sex or gender. As a sexual orientation, homosexuality refers to "an enduring pattern of or disposition to experience sexual, affectional, or romantic attractions" primarily or exclusively to people of the same...

 --- homosexuality, female --- homosexuality, male --- unsafe sex

--- sexual development

--- climacteric

Climacteric

In Ancient Greek philosophy and astrology, the climacterics were certain purportedly critical years in a person's life, marking turning points.-Historic use:...

 --- andropause

Andropause

Andropause or male menopause, sometimes colloquially called "man-opause" is a name that has been given to a menopause-like condition in aging men...

 --- menopause

Menopause

Menopause is a term used to describe the permanent cessation of the primary functions of the human ovaries: the ripening and release of ova and the release of hormones that cause both the creation of the uterine lining and the subsequent shedding of the uterine lining...

 --- menopause, premature --- perimenopause --- postmenopause --- premenopause --- puberty

Puberty

Puberty is the process of physical changes by which a child's body matures into an adult body capable of reproduction, as initiated by hormonal signals from the brain to the gonads; the ovaries in a girl, the testes in a boy...

 --- adrenarche

Adrenarche

Adrenarche is an early sexual maturation stage in some higher primates that in humans typically occurs at around 6 to 8 years of age. During adrenarche the adrenal cortex secretes increased levels of androgens such as DHEA and DHEAS, but without increased cortisol levels. Adrenarche is the result...

 --- menarche

Menarche

Menarche is the first menstrual cycle, or first menstrual bleeding, in female human beings. From both social and medical perspectives it is often considered the central event of female puberty, as it signals the possibility of fertility....

 --- sex differentiation --- sexual maturation