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Agenesis

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Agenesis

In medicine

Medicine

Medicine is the art and science of healing. It encompasses a range of health care practices evolved to maintain and restore health by the prevention and treatment of illness....
, agenesis refers to the failure of an organ

Organ (anatomy)

In biology, an organ is a biological tissue that performs a specific function or group of functions. Usually there is a main tissue and sporadic tissues....
to develop during embryonic

Embryo

An embryo is a multicellular organism ploidy eukaryote in its earliest stage of development, from the time of first cell division until birth, Egg , or germination....
growth and development. Many forms of agenesis are referred to by individual names, depending on the organ affected:

In theology

Theology

Theology is the study of the existence or attributes of a deity or gods, or more generally the study of religion or spirituality. It is sometimes contrasted with religious studies: theology is understood as the study of religion from an internal perspective , and religious studies as the study of religion from an external perspective....
, agenesis means to have no beginning or to have no creator, to come into existence without the influence of an outside intelligence.

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Encyclopedia

Medicine

Medicine is the art and science of healing. It encompasses a range of health care practices evolved to maintain and restore health by the prevention and treatment of illness....
, agenesis refers to the failure of an organ

Organ (anatomy)

In biology, an organ is a biological tissue that performs a specific function or group of functions. Usually there is a main tissue and sporadic tissues....
to develop during embryonic

Embryo

An embryo is a multicellular organism ploidy eukaryote in its earliest stage of development, from the time of first cell division until birth, Egg , or germination....
growth and development. Many forms of agenesis are referred to by individual names, depending on the organ affected:

Agenesis of the corpus callosum
Agenesis of the corpus callosum

Agenesis of the Corpus Callosum is a rare birth defect in which there is a complete or partial absence of the corpus callosum. Agenesis of the corpus callosum occurs when the corpus callosum, the band of tissue connecting the two hemispheres of the brain, fails to develop normally, typically in utero, resulting in disconnected brain hemisph...
- failure of the Corpus callosum
Corpus callosum

The corpus callosum is a structure of the mammalian brain in the longitudinal fissure that connects the left and right cerebral hemispheres. It also facilitates communication between the two hemispheres....
to develop.
Renal agenesis
Renal agenesis

The absence of one or both kidneys at birth....
- failure of one or both of the kidneys to develop.
Phocomelia
Phocomelia

Phocomelia is a congenital disorder involving the limbs . An individual exhibiting phocomelia may be referred to as a phocomelus....
- failure of the arms or legs to develop.
Penile agenesis
Penile agenesis

Penile agenesis is a very rare birth defect in humans, occurring about once in 20 million births, where a male child is born without a penis. It is also known as aphallia [from the Greek, "a" for negative or no, and "phallia" for penis]....
- failure of penis
Penis

The penis is an external sex organ of certain biologically male organisms, in both vertebrates and invertebrates.The penis is a reproductive organ, technically an intromittent organ, and for Eutheria, additionally serves as the external organ of urination....
to develop.
Müllerian agenesis - failure of the uterus and part of the vagina to develop.

Theology

Theology is the study of the existence or attributes of a deity or gods, or more generally the study of religion or spirituality. It is sometimes contrasted with religious studies: theology is understood as the study of religion from an internal perspective , and religious studies as the study of religion from an external perspective....
, agenesis means to have no beginning or to have no creator, to come into existence without the influence of an outside intelligence.