|
 |
||
 |
| This glossary contains: 19186 medical terms |
 |
Pronucleus
|
|
Pronucleus Plural: pronuclei. Refers to the haploid nucleus of egg or sperm prior to fertilization, and immediately after fertilization, before the sperm and egg nuclei have fused into a single diploid nucleus.
RELATED TERMS--------------------------------------
Pronuclei
See Pronucleus.
Haploid
A single set of chromosomes (half the full set of genetic material), present in the egg and sperm cells of animals and in the egg and pollen cells of plants. Human beings have 23 chromosomes in their reproductive cells.
Nucleus
Plural: nuclei. The compartment of a cell that contains the chromosomes.
Sperm
A sperm cell, or spermatozoon (pl. spermatozoa) (in Greek: sperm = semen and zoon = alive), is the haploid cell that is the male gamete. It is carried in fluid called semen, and is capable of fertilising an egg cell to form a zygote. A zygote can grow into a new organism, such as a human. Sperm cells contain half of the genetic information needed to create life. Generally, the sex of the offspring is determined by the sperm, through the chromosomal pair "XX" (for a female) or "XY" (for a male).
Fertilization
The combining of the genetic material carried by sperm and egg to create an embryo. Normally occurs inside the fallopian tube (in vivo) but may also occur in a petri dish (in vitro).
Nuclei
See nucleus.
Diploid
Refers to a cell having two sets of chromosomes (in humans, 46 chromosomes). In contrast, a haploid cell, such as a gamete, has only one set of chromosomes (23 in humans).
SIMILAR TERMS--------------------------------------
Pronestyl
Pronestyl is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): procainamide hydrochloride.
Pronestyl-sr
Pronestyl-sr is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): procainamide hydrochloride.
Pronuclei
See Pronucleus.
PREVIOUS AND NEXT TERMS--------------------------------------
Preimplantation embryo
The very early, free-floating embryo, from the time the egg is fertilized (zygote) until the beginning of implantation (in humans, a period of about 6 days). Also includes embryos resulting from nuclear transfer, in all the developmental stages through the blastocyst stage.
Preimplantation screening
Or preimplantation genetic diagnosis (PGD) - Before an in vitro-fertilized embryo is implanted in a woman's uterus, it can be screened for specific genetic mutations that are known to cause particular genetic diseases or for chromosomal abnormalities. One or more cells are removed from the preimplantation embryo for testing.
Preimplantation genetic diagnosis (PGD)
Or preimplantation screening. Before an in vitro-fertilized embryo is implanted in a woman's uterus, it can be screened for specific genetic mutations that are known to cause particular genetic diseases or for chromosomal abnormalities. One or more cells are removed from the preimplantation embryo for testing.
Prenatal diagnosis
Detection of abnormalities and disease conditions while a fetus is developing in the uterus. Many techniques for prenatal diagnosis, such as chorionic villus sampling and amniocentesis, require sampling placental tissue or fetal cells found in the amniotic fluid or fetomaternal circulation. Others, such as ultrasonography, can be performed without cell or tissue samples.
Pronuclei
See Pronucleus.
Pronucleus
Peak day
The last day your cervical mucus has the consistency of egg white; usually coincides with the beginning of a temperature spike.
Pediatrician
A physician who specializes in treating infants and children up to adolescence.
Pelvic adhesions
Scar tissue from laparoscopic surgery, a cesarean section, dilation and curettage, other surgery, or pelvic inflammatory disease (PID) or other infections that can obstruct the reproductive organs.
Pelvic floor muscles
The muscles at the base of the pelvis that support the bladder, uterus, vagina, and rectum. These muscles can be strengthened by doing Kegel exercises, which involve the repeated tightening and releasing of the muscle group.
Percutaneous umbilical cord sampling
A genetic test that screens blood from a fetus's umbilical cord for abnormalities.
RELATED TERMS--------------------------------------
Pronuclei
See Pronucleus.
Haploid
A single set of chromosomes (half the full set of genetic material), present in the egg and sperm cells of animals and in the egg and pollen cells of plants. Human beings have 23 chromosomes in their reproductive cells.
Nucleus
Plural: nuclei. The compartment of a cell that contains the chromosomes.
Sperm
A sperm cell, or spermatozoon (pl. spermatozoa) (in Greek: sperm = semen and zoon = alive), is the haploid cell that is the male gamete. It is carried in fluid called semen, and is capable of fertilising an egg cell to form a zygote. A zygote can grow into a new organism, such as a human. Sperm cells contain half of the genetic information needed to create life. Generally, the sex of the offspring is determined by the sperm, through the chromosomal pair "XX" (for a female) or "XY" (for a male).
Fertilization
The combining of the genetic material carried by sperm and egg to create an embryo. Normally occurs inside the fallopian tube (in vivo) but may also occur in a petri dish (in vitro).
Nuclei
See nucleus.
Diploid
Refers to a cell having two sets of chromosomes (in humans, 46 chromosomes). In contrast, a haploid cell, such as a gamete, has only one set of chromosomes (23 in humans).
SIMILAR TERMS--------------------------------------
Pronestyl
Pronestyl is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): procainamide hydrochloride.
Pronestyl-sr
Pronestyl-sr is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): procainamide hydrochloride.
Pronuclei
See Pronucleus.
PREVIOUS AND NEXT TERMS--------------------------------------
Preimplantation embryo
The very early, free-floating embryo, from the time the egg is fertilized (zygote) until the beginning of implantation (in humans, a period of about 6 days). Also includes embryos resulting from nuclear transfer, in all the developmental stages through the blastocyst stage.
Preimplantation screening
Or preimplantation genetic diagnosis (PGD) - Before an in vitro-fertilized embryo is implanted in a woman's uterus, it can be screened for specific genetic mutations that are known to cause particular genetic diseases or for chromosomal abnormalities. One or more cells are removed from the preimplantation embryo for testing.
Preimplantation genetic diagnosis (PGD)
Or preimplantation screening. Before an in vitro-fertilized embryo is implanted in a woman's uterus, it can be screened for specific genetic mutations that are known to cause particular genetic diseases or for chromosomal abnormalities. One or more cells are removed from the preimplantation embryo for testing.
Prenatal diagnosis
Detection of abnormalities and disease conditions while a fetus is developing in the uterus. Many techniques for prenatal diagnosis, such as chorionic villus sampling and amniocentesis, require sampling placental tissue or fetal cells found in the amniotic fluid or fetomaternal circulation. Others, such as ultrasonography, can be performed without cell or tissue samples.
Pronuclei
See Pronucleus.
Pronucleus
Peak day
The last day your cervical mucus has the consistency of egg white; usually coincides with the beginning of a temperature spike.
Pediatrician
A physician who specializes in treating infants and children up to adolescence.
Pelvic adhesions
Scar tissue from laparoscopic surgery, a cesarean section, dilation and curettage, other surgery, or pelvic inflammatory disease (PID) or other infections that can obstruct the reproductive organs.
Pelvic floor muscles
The muscles at the base of the pelvis that support the bladder, uterus, vagina, and rectum. These muscles can be strengthened by doing Kegel exercises, which involve the repeated tightening and releasing of the muscle group.
Percutaneous umbilical cord sampling
A genetic test that screens blood from a fetus's umbilical cord for abnormalities.
We thank you for using the Medical Glossary to search for Pronucleus. If you have a better definition for Pronucleus than the one presented here, please let us know by making use of the suggest a term option. This definition of Pronucleus may be disputed by other professionals. Our attempt is to provide easy definitions on Pronucleus and any other medical topic for the public at large.
This dictionary contains 19186 terms.
|
|