Sexual intercourse in the missionary position depicted by Édouard-Henri Avril (1892) Sexual intercourse (or coitus or copulation) is sexual activity typically involving the insertion and thrusting of the penis into the vagina for sexual pleasure, reproduction, or both. This is also known as vaginal intercourse or vaginal sex.

In spiders, the paired male copulatory organs are situated on the pedipalps, which are paired body appendages anterior to the four pairs of walking legs. The use of pedipalps as intromittent organs in males is a synapomorphy for the Araneae [ 16 ].

Images: 5; Videos: 0; No results found for . Did you mean ? Sort by: Relevance, Best Sellers, Date  1 Jun 2016 Their me- chanical behavior during copulation is also diverse: males in some taxa reorient or protrude genital tissues, others inflate them and  18 Jan 2007 studied the ultrastructure of the copulatory organ in eight species of acoels belonging to the taxon Childia. Members of Childia possess a  10 Dec 2018 The midventral copulatory organ is in all species composed of an outer muscular penis sheath and an inner penis cone. Nerves encircle the  6 Nov 2015 Major findings of the study are the variability in the location of the accessory copulation organ between different taxa, and the absence of a  Adult male Coastal Tailed Frog showing his tail-like copulatory organ. This organ, an extension of the cloaca, is used to transfer sperm into the female's cloaca  entitled The Museum of Copulatory Organs , is part of this tradition.

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Spiders were then isolated, and we measured each individual's time until death and female fecundity over the next 40 days. copulatory organ : German - English translations and synonyms (BEOLINGUS Online dictionary, TU Chemnitz) Dec 15, 2012 This study was aimed to investigate the functional morphology of copulation and sperm transfer in the invasive snail Pomacea canaliculata. These (there are two) follow the urethras and transport the spermatozoa from the testicles and the epididymis to the copulatory organ. Their apparent length is 15  Synonyms for Copulatory organ in Free Thesaurus. Antonyms for Copulatory organ. 1 synonym for sex organ: reproductive organ. What are synonyms for  Abstract The rudimentary copulatory organ of chickens was first observed as a phallic knob in 6‐day embryos.

Read more! Copulatory organs of eight species of the monophyletic taxon Childia were investigated in detail, using phalloidin fluorescence method and confocal microscopy.Childia species were shown to have one, two or several tubular stylets, conical to cylindrical in shape, composed of few to numerous needles. In insects, species appear to diverge first in the shape and size of their copulatory organs, and numerous otherwise cryptic species can only be told apart by their copulatory organs.

Jan 20, 2020 The vagina receives the male copulatory organ, the penis, during copulation and is the birth canal for the infant during parturition. Mammary 

What is the female copulatory organ? The vagina is strictly a reproductive passage serving as the female copulatory organ as well as The copulative organ Contrary to the rooster, Gallus gallus, the copulatory organ of the gander is very well developed. It is invaginated, spiral-like and is about 15 cm in length. A spermatic furrow runs along the entire length of the organ and transports the semen after ejaculation.

30 Sep 2008 Indiana University biologist Armin Moczek explains his findings about the inverse relationship between horn and copulatory organ size in male 

What are synonyms for  Abstract The rudimentary copulatory organ of chickens was first observed as a phallic knob in 6‐day embryos.

doi: 10.1016/j.cub.2018.08.047. Internal fertilization, modifications of the male’s anal fin to form a copulatory organ, and viviparity probably evolved independently three times in cyprinodontiform fishes: in the subfamilies Goodeinae, Anablepinae and Poeciliinae (sensu Parenti 1981). Ostrich: copulatory organ. The arrow indicates a cluster of ganglion cells in the point of convergence of 3 nerve fascicles.
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The external female genital (vulva, pudendum) reaches from the outside to the hymen. Some authors also consider the female urethra as an external female sexual organ. What is a copulatory organ? An organ utilized by the male animal for insemination, that is, to deposit spermatozoa directly into the female reproductive tract. Various types of copulatory organs are found among the vertebrates, whereas cloacal apposition occurs in most other vertebrates which lack these structures.

empties a secretion into the membranous urethra 1. To engage in sexual intercourse in which the penis is inserted into the vagina. 2.
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The Cowper's glands secrete a fluid that lubricates the urethra before departure of semen (ejaculation). The penis is the male copulatory organ. Inside it presents  

The morphology of the bulb is species specific and plays an important role in species recognition and prezygotic 2017-03-01 · No male copulatory organs have been recorded in the infraorders Procarididea (Chace and Manning, 1972) and Stenopodidea , which do not include pelagic species.

copulatory sexual selection via the processes of sperm competition, cryptic female choice male copulatory organ in order to locate and contact the female.

Here, we document the presence of neurons and a nerve inside the male palpal organ of a spider for the first time. Ostrich: copulatory organ. The arrow indicates a cluster of ganglion cells in the point of convergence of 3 nerve fascicles.

To transfer male reproductive cells from one individual to another, usually into an internal organ or cavity, such as a cloaca.