Sex organ
hideA sex organ, or primary sexual characteristic, as narrowly defined, is any of the anatomical parts of the body which are involved in sexual reproduction and constitute the reproductive system in a complex organism; in mammals, these include:
The Latin term genitalia, sometimes anglicized as genitals and genital area, is used to describe the externally visible sex organs, known as primary genitalia or external genitalia: in males the penis, in females the clitoris and vulva.
The other, hidden sex organs are referred to as the secondary genitalia or internal genitalia. The most important of these are the gonads, a pair of sex organs, specifically the testes in the male or the ovaries in the female. Gonads are the true sex organs, generating reproductive gametes containing inheritable DNA. They also produce most of the primary hormones that affect sexual development, and regulate other sexual organs and sexually differentiated behaviors.
A more ambiguously defined term is erogenous zone, subjectively, any portion of the body that when stimulated produces erotic sensation, but always prominently including the genitalia.
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News tagged with reproductive biology
Rsearcher creates weight-gain guidelines for women pregnant with twins
Jul 21, 2009 |
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Healthy, normal-weight women pregnant with twins should gain between 37 and 54 pounds, according to research from a Michigan State University professor who helped shape the recently released national guidelines on gestational ...
New contraceptive device is designed to prevent sexual transmission of HIV
Medicine & Health / HIV & AIDS
May 19, 2009 |
4.2 / 5 (6) |
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Researchers from Weill Cornell Medical College have published results showing that a new contraceptive device may also effectively block the transmission of the HIV virus. Findings show that the device prevents infection ...
Study reveals conflict between doctors, midwives over homebirth
May 11, 2009 |
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Two Oregon State University researchers have uncovered a pattern of distrust - and sometimes outright antagonism - among physicians at hospitals and midwives who are transporting their home-birth clients to the hospital because ...
Small RNAs can play critical roles in male infertility/contraception
Apr 09, 2009 |
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University of Nevada School of Medicine scientists in the Department of Physiology and Cell Biology have discovered insight into the reproductive workings of the male sex chromosome that may have significant ...
Researchers identify growth factor that stimulates adult stem cells
Mar 24, 2009 |
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(PhysOrg.com) -- A researcher in Penn State's College of Agricultural Sciences, collaborating with researchers at the University of Pennsylvania's School of Veterinary Medicine, has identified for the first time a critical ...
Fossilised pregnant fish was one of the first animals to have sex
Biology /
Feb 25, 2009 |
4.9 / 5 (14) |
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(PhysOrg.com) -- A pregnant fossil fish at the Natural History Museum in London has shed light on the possible origin of sex, according to a study published in Nature today by an international team includ ...
