glans

{{Short description|Anatomical structure in mammals}}

{{Use dmy dates|date=May 2014}}

{{for|the clam genus|Carditidae}}

The glans ({{IPAc-en|g|l|æ|n|z}},OED 2nd edition, 1989.[http://www.merriam-webster.com/dictionary/glans Entry "glans"] in [http://www.merriam-webster.com/ Merriam-Webster Online Dictionary]. {{plural form}}: glandes {{IPAc-en|'|g|l|æ|n|d|i:|z}}; from the Latin word for "acorn")[http://www.merriam-webster.com/dictionary/glans "glans" at merriam-webster.com] is a vascular structure located at the tip of the penis in male mammals or a homologous genital structure of the clitoris in female mammals.{{Cite book |last=Drake |first=Richard Lee |title=Gray's Anatomy for Students |last2=Vogl |first2=Wayne |last3=Mitchell |first3=Adam William Michael |last4=Gray |first4=Henry |date={{date|2015-11-15|DMY}} |publisher=Churchill Livingstone; Elsevier |isbn=978-0-7020-5131-9 |edition=3rd |location=Philadelphia, Pennsylvania |publication-date=2015 |page=506 |language=en-US |oclc=881508489 |ol=28520901M}}

Structure

{{Multiple images

| image2 = Glans Penis of A Human.jpg

| alt2 = Human male glans penis

| caption2 = Typical human male glans penis, at the end of the penis, showing the urinary meatus at its tip

| image1 = Glans clitoris.jpg

| alt1 = Human female glans clitoris

| caption1 = Typical human female glans clitoridis, a pea-sized structure between the clitoral hood and the urinary meatus

| direction = vertical

}}

The exterior structure of the glans consists of mucous membrane, which is usually covered by foreskin or clitoral hood in naturally developed genitalia. This covering, called the prepuce, is normally retractable in adulthood unless removed by circumcision.

The glans naturally joins with the frenulum of the penis or clitoris, as well as the inner labia in women, and the foreskin in men. In non-technical or sexual discussions, often the word "clitoris" refers to the external glans alone, excluding the clitoral hood, frenulum, and internal body of the clitoris.{{Cite journal |last=Puppo |first=Vincenzo |date=2011 |title=Anatomy of the Clitoris: Revision and Clarifications about the Anatomical Terms for the Clitoris Proposed (without Scientific Bases) by Helen O'Connell, Emmanuele Jannini, and Odile Buisson |journal=ISRN Obstetrics and Gynecology |language=en |volume=2011 |pages=261464 |doi=10.5402/2011/261464 |issn=2090-4436 |pmc=3175415 |pmid=21941661 |doi-access=free }} Similarly, phrases "tip" or "head" of the penis refers to the glans alone.{{Cite web |title=What are the parts of the male sexual anatomy? |url=https://www.plannedparenthood.org/learn/health-and-wellness/sexual-and-reproductive-anatomy/what-are-parts-male-sexual-anatomy |website=Planned Parenthood}}

Sex differences in humans

In males, the glans is known as the glans penis, while in females the glans is known as the clitoral glans.

In females, the clitoris is above the urethra. The glans of the clitoris is the most highly innervated part of the external female genitalia.

{{harvnb|Carroll|2012|pp=[https://books.google.com/books?id=RY0n2CGS5EcC&pg=PT154 110–111],

[https://books.google.com/books?id=RY0n2CGS5EcC&pg=PT296 252]}};

{{harvnb|Di Marino|2014|p=81}}

{{visible anchor|Sex differences in other mammals|In other mammals}}

In spotted hyenas, the female's pseudo-penis can be distinguished from the male's penis by its greater thickness and more rounded glans.Glickman SE, Cunha GR, Drea CM, Conley AJ and Place NJ. (2006). [http://courses.washington.edu/pbio509/Glickman_etal.pdf Mammalian sexual differentiation: lessons from the spotted hyena]. Trends Endocrinol Metab 17:349–356.{{cite book|author1=M. G. L. Mills|author2=Gus Mills|author3=Heribert Hofer|title=Hyaenas: Status Survey and Conservation Action Plan|url=https://books.google.com/books?id=aO2gTeLBLZYC&q=spotted+hyena+glans&pg=PA31|access-date=27 January 2013|year=1998|publisher=IUCN|isbn=978-2-8317-0442-5|pages=31–}}{{cite book|author=Kevin Robert Theis|title=Scent Marking in a Highly Social Mammalian Species, the Spotted Hyena, Crocuta Crocuta|url=https://books.google.com/books?id=n987VgJs3CoC&q=spotted+hyena+glans&pg=PA25|access-date=27 January 2013|year=2008|isbn=978-1-109-03595-7|pages=25–|publisher=Michigan State University. Zoology and Ecology, Evolutionary Biology and Behavior }}{{cite web |title=The Truth About Hyaenas: debunking hyaena myths |url=http://www.hyaenidae.org/hyena-myths.html |url-status=dead |access-date={{date|2014-05-02|DMY}} |archive-url=https://archive.today/20130415002728/http://www.hyaenidae.org/hyena-myths.html |archive-date=15 April 2013 |df=dmy-all }} In both male and female spotted hyenas, the base of the glans is covered with penile spines.{{cite book|author=R. F. Ewer|title=The Carnivores|url=https://books.google.com/books?id=IETMd3-lSlkC&q=crocuta+spines|access-date=9 January 2013|year=1973|publisher=Cornell University Press|isbn=978-0-8014-8493-3}}{{cite book|author=Richard Estes|title=The Behavior Guide to African Mammals: Including Hoofed Mammals, Carnivores, Primates|url=https://archive.org/details/isbn_0520080858|url-access=registration|quote=glans spines.|access-date=9 January 2013|year=1991|publisher=University of California Press|isbn=978-0-520-08085-0}}{{cite book|author=Catherine Blackledge|title=The Story of V: A Natural History of Female Sexuality|url=https://archive.org/details/storyofv00cath|url-access=registration|quote=glans spines hyena.|access-date=9 January 2013|year=2003|publisher=Rutgers University Press|isbn=978-0-8135-3455-8}}

Development

See also

References

{{Reflist}}

=Works cited=

  • {{cite book |last=Carroll |first=Janell L. |title=Sexuality Now: Embracing Diversity |publisher=Cengage Learning |year=2012 |url=https://books.google.com/books?id=RY0n2CGS5EcC&pg=PP1 |isbn=978-1-111-83581-1}}
  • {{cite book |last=Di Marino |first=Vincent |title=Anatomic Study of the Clitoris and the Bulbo-Clitoral Organ |publisher=Springer |year=2014 |url=https://books.google.com/books?id=wKMpBAAAQBAJ&q=gbs_navlinks_s |isbn=978-3-319-04894-9}}

Category:Sexual anatomy

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