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see reproductive systemreproductive system,
in animals, the anatomical organs concerned with production of offspring. In humans and other mammals the female reproductive system produces the female reproductive cells (the eggs, or ova) and contains an organ in which development of the fetus takes
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The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved.


The male organ of copulation, or phallus. In mammals the penis consists basically of three elongated masses of erectile tissue. The central corpus spongiosum (corpus urethrae) lies ventral to the paired corpora cavernosa. The urethra runs along the underside of the spongiosum and then normally rises to open at the expanded, cone-shaped tip, the glans penis, which fits like a cap over the end of the penis. Loose skin encloses the penis and also forms the retractable foreskin, or prepuce.

Erection of the penis is caused by nervous stimulation resulting in engorgement of the spiral helicine arteries and the plentiful venous sinuses of the organ. In most mammals other than Primates the penis is retracted into a sheath when not in use.

In submammalian forms the penis is not as well developed. Crocodilians, turtles, and some birds have a penis basically like that of mammals, lying in the floor of the cloaca. When erected, it protrudes from the cloaca and functions in copulation. Other vertebrates lack a penis, although various functionally comparable organs may be developed such as the claspers on the pelvic fins of sharks and the gonopodia on the anal fins of certain teleost fishes.

McGraw-Hill Concise Encyclopedia of Bioscience. © 2002 by The McGraw-Hill Companies, Inc.

What does it mean when you dream about a penis?

The universal symbol of the male, the penis represents energy, vital force, sexual power, and fertility. One’s sexual energy or matters of orientation may be at issue, depending upon the gender of the dreamer. (See also Genitals).

The Dream Encyclopedia, Second Edition © 2009 Visible Ink Press®. All rights reserved.


The male organ of copulation in humans and certain other vertebrates. Also known as phallus.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.


the male organ of copulation in higher vertebrates, also used for urine excretion in many mammals
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005


The male sex organ is symbolic of fertility, power, and energy. Your gender and sexual orientation play a part when interpreting this dream. Are you dealing with issues of sexual orientation, power, or aggression? Answering these questions will enable you to interpret your dream.
Bedside Dream Dictionary by Silvana Amar Copyright © 2007 by Skyhorse Publishing, Inc.
References in periodicals archive ?
harringtoni Gordon, todas ellas pertenecientes al grupo de especies Epilachna vittigera, por la presencia de setas en la parte media de la guia del pene.
a) Ejemplar obtenido en septiembre; testiculos (Te), base del pene (Bp), conductos deferentes (Cd), b) ejemplar obtenido en octubre, c) longitud total de los conductos deferentes (Cd), pene elongado (Pe), testiculo (te) e intestino (In), d) extremo apical de un individuo donde se observa la zona de union (Zu) de los dos conductos deferentes (Cd) en la base del pene (Pe), intestino (In) y cirros (Ci).
Pene recently won the Montserrat Caballe International Singing Competition while the trio also performed on ITV's Live from the Palladium, sang for the Queen at the Festival of Remembrance and sang We Three Kings on BBC1's Big Sing.
The holding company of providers of property, casualty and speciality insurance and reinsurance solutions, Allied World Assurance Company Holdings AG's (NYSE:AWH) declared on Thursday that Allied World Europe will enter the marine liability market and named Pene Reuben as assistant vice president (AVP) of Marine Liability.
El pene presentaba una implantacion muy baja en relacion con las bolsas escrotales, hipospadias perineal y acentuada curvatura ventral (Fig.