|
| | |
Heteroplasmy
Heteroplasmy An atypical condition characterized by the presence of more than one type of mitochondrial DNA in a single individual. Normally, each individual has only one type of mitochondrial DNA, inherited from his or her mother through the egg at fertilization. (Mitochondria from the sperm are systematically eliminated by the egg at fertilization.)
RELATED TERMS--------------------------------------
Atypical
Not typical, not usual, not normal, abnormal. Atypical is often used to refer to the appearance of precancerous or cancerous cells.
Condition
The term "condition" has a number of biomedical meanings including the following: 1.An unhealthy state, such as in "this is a progressive condition." 2.A state of fitness, such as "getting into condition." 3.Something that is essential to the occurrence of something else; essentially a "precondition." 4.As a verb: to cause a change in something so that a response that was previously associated with a certain stimulus becomes associated with another stimulus; to condition a person, as in behavioral conditioning.
DNA
Deoxyribo-Nucleic acid. DNA molecules carry the genetic information necessary for the organization and functioning of most living cells and control the inheritance of characteristics.
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).
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).
SIMILAR TERMS--------------------------------------
Heterocellular
Composed of more than one type of cell.
Heterogeneous
Dissimilar in type, and having different or opposing characteristics.
Heterologous
1. Pertaining to cytologic or histologic elements occurring where they are not normally found.2. Derived from an animal of a different species, as the serum of a horse is heterologous for a rabbit.
Heterophile antigen
A cross-reacting antigen that appears in widely ranging species such as humans and bacteria.
Heterophilia
The condition in which love and lust are attached to those of the other sex. A condition of being in which sexuoerotic arousal and facilitation or attainment of orgasm are responsive to, and dependent upon a partner of the other morphologic sex.
Heterophobia
The condition in which those whose love and lust are attached to persons of the other sex are dreaded or feared.
Heterosexual
Characterized by other-sex contact, either as a genital act or as a long-term sexuoerotic status. It is analogous to right-handedness in being in conformity with the norm and therefore is not pathological in itself, though subject to other pathology. A heterosexual person is able to fall in love with, and become the pairbonded sexuoerotic partner of only a person of the other morphologic sex. Paraphilias occur predominantly in association with heterosexual pairing. The ideation and affective state, exclusive of the behavioral component, is heterophilia.
Heterosexualism
Other-sex contact, either as a genital act or as a long term sexuoerotic status. It is analogous to right-handedness in being in conformity with the norm and, therefore, not pathological in itself, though subject to other pathology. A heterosexual person is able to fall in love with, and become the pairbonded sexuoerotic partner of only a person of the other morphologic sex. Paraphilias occur predominantly in association with heterosexual pairing.
Heterosexuality
Erotosexual pairing with a partner of the complementary genital morphology. It's full manifestation includes falling in love.
PREVIOUS AND NEXT TERMS--------------------------------------
Hypoxia
Abnormal oxygen content in the organs and tissues of the body.
Hysterosalpingography
X-ray examination of the uterus and fallopian tubes that uses dye and is often performed to rule out tubal obstruction.
Hysteroscope
Visual examination of the canal of the cervix and the interior of the uterus using a viewing instrument (hysteroscope) inserted through the vagina.
Hyposensitisation
See specific allergy vaccination.
Hematopoietic stem cell
A stem cell from which all red blood cells, white blood cells, and platelets develop.
Heteroplasmy
Handedness
The preference for using one hand over the other. Most people are right-handed, about 10 percent are left-handed, and others, who don't favor a hand, are ambidextrous.
Hemolytic disease of the newborn
Also called Rh disease or erythroblastosis, hemolytic disease results when a woman who is Rh-negative (meaning she does not carry the Rh protein in her blood) has a fetus who is Rh-positive and her immune system makes antibodies against the fetus's blood. The disorder is treated with a compound that prevents the woman's immune system from making antibodies.
Hemorrhoid
Caused by increased blood volume and pressure from the uterus on the veinsin the legs and pelvis, these swollen blood vessels in the anus are commonduring pregnancy. Constipation can also cause (or compound) the problem.
Hepatitis B vaccine
The vaccine against hepatitis B, a virus that affects primarily the liver. This series of three shots, given between birth and 2 weeks and at 2 and 6 months, may cause fussiness, low-grade fever,headache, and soreness at the injection site.
Hib vaccine
A vaccine given to protect against Haemophilus influenzae type b, a serious bacterial infection that causes ear and airway infections and is the leading cause of meningitis in children under 2.
We thank you for using the Health Dictionary to search for Heteroplasmy. If you have a better definition for Heteroplasmy than the one presented here, please let us know by making use of the suggest a term option. This definition of Heteroplasmy may be disputed by other professionals. Our attempt is to provide easy definitions on Heteroplasmy and any other medical topic for the public at large.This dictionary contains 25007 terms. |
|
|
