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Topic: Vas deferens

Related Topics

Fallopian tube

Epididymis

Bulbourethral gland

Prostate

Urethra

Testicle

Ovary

Sterilization (surgical procedure)

Vasectomy

Uterus

Vagina

Plateau phase

Ejaculation

Penis

Sperm

	XI. Splanchnology. 3c. 2. The Ductus Deferens. Gray, Henry. 1918. Anatomy of the Human Body.
		The ductus deferens, the excretory duct of the testis, is the continuation of the canal of the epididymis.
		Commencing at the lower part of the tail of the epididymis it is at first very tortuous, but gradually becoming less twisted it ascends along the posterior border of the testis and medial side of the epididymis, and, as a constituent of the spermatic cord, traverses the inguinal canal to the abdominal inguinal ring.
		A small triangular area of the fundus of the bladder, between the ductus deferentes laterally and the bottom of the rectovesical excavation of peritoneum above, is in contact with the rectum.
	www.bartleby.com /107/259.html (580 words)

	MMHC Vasectomy Reversal Center - Microsurgical Vasectomy Reversal Overview, restoring male fertility
		A vasectomy is a surgical procedure that blocks the vas deferens thus preventing sperm from flowing to the prostate, as illustrated in Figure 2.
		Obstruction of the vas is usually accomplished by removing a small segment of the vas deferens and placing a suture or small metal clip on the end of the vas.
		A vasectomy reversal is a surgical procedure that re-approximates the cut ends of the vas deferens, restoring the flow of sperm from the testicle to the prostate.
	www.vasectomyreversalsuccess.com /education/vasectomy-reversal-overview.html (943 words)

	eMedicine - Vasectomy : Article Excerpt by: Theodore V Benderev, MD
		A vasectomy involves the surgical interruption of both vas deferens, which are the tubes that carry the sperm from the testicles to the urinary tract.
		The vas is then brought to skin level, where it is cut or cauterized (burned), then clipped off or tied before being dropped back into the scrotum.
		Vas deferens - The 2 muscular tubes that carry sperm from the testicle and epididymis to the urinary tract and out the urethra; each referred to as a vas and together as vasa
	www.emedicine.com /aaem/byname/vasectomy.htm (655 words)

	Reference.com/Encyclopedia/Vas deferens
		The vas deferens (plural: vasa deferentia), also called ductus deferens, (Latin: "carrying-away vessel"), and in lay talk sperm tube is part of the male anatomy of some species, including humans.
		During ejaculation the smooth muscle in the wall of the vas deferens contracts reflexively, thus propelling the sperm forward.
		Investigational attempts for male contraception have focused on the vas with the use of the intra vas device and reversible inhibition of sperm under guidance (RISUG).
	www.reference.com /browse/wiki/Ductus_deferens (316 words)

	Harry Fisch, MD ~
		The diameter of the vas deferens is barely perceptible to the human eye (.3 to.5 mm in diameter).
		As illustrated in Figures 7a and 7b, the inner layer of the vas deferens is precisely connected with sutures to a small opening in a single epididymal tubule.
		Fluid is extracted from the vas deferens by syringe (as illustrated in Figure 8) and inspected using a laboratory microscope (as illustrated in figure 9).
	cpmcnet.columbia.edu /dept/urology/fisch/vasectomyreversal.htm (5046 words)

	Olympus Microscopy Resource Center: Specialized Microscopy Techniques - Differential Interference Contrast Image ...
		The vas deferens, sometimes alternatively referred to as ductus deferens, exists in pairs and is part of the male reproductive system in humans and other mammals.
		The vas deferens, or rather the absence of the tube, is sometimes a natural cause of sterility in men.
		A condition known as congenital bilateral absence of the vas deferens (CBAVD) is responsible for approximately two to five percent of cases of male infertility.
	www.olympusmicro.com /primer/techniques/dic/dicgallery/vasdeferenssmall.html (279 words)

	Understanding Vasectomies - Male Anatomy and Terms
		The vas deferens is one of two small muscular tubes that connects to the urethra and out the penis.
		A procedure of re-opening the vas deferens to re-introduce sperm to semen.
		A surgical procedure for vasectomy reversal which entails connecting the vas deferens to the epididymis.
	www.vasectomymedical.com /anatomy.html (305 words)

	beavercleaver.net - Male Reproductive Plumbing
		The sperm transport themselves through the vas deferens, to the prostate gland located at the front of the bladder, where at the proper time, sperm join seminal fluid from the prostate, and are expelled through the urethra.
		The human vas deferens seem well suited for vasectomy, in that they are external to the body, and easily reached through the thin skin of the scrotum.
		Vas Deferens - a muscular tube (about 14 inches long by about 0.1 in diameter, some are larger, some smaller) that transports sperm to the prostate gland.
	www.beavercleaver.net /histology.htm (571 words)

	Vasectomy Overview
		The vas deferens are part of a larger bundle of tissues, blood vessels, nerves and lymphatic channels called the spermatic cord.
		This may be the result of poor sperm migration out of the vas deferens after surgery, or it may indicate that the severed ends of the vas deferens have reattached themselves to one another, a condition called recanalization.
		In this microsurgical procedure, the blockage is bypassed by surgically connecting the vas deferens directly to the epididymis in a new location.
	www.drrajmd.com /conditions/treatments/vasectomy/vasectomy.htm (1695 words)

	Congenital bilateral absence of the vas deferens - Genetics Home Reference
		Congenital bilateral absence of the vas deferens occurs in males when the tubes that carry sperm out of the testes (the vas deferens) fail to develop properly.
		Mutations in the CFTR gene cause congenital bilateral absence of the vas deferens.
		When congenital bilateral absence of the vas deferens occurs with CFTR mutations, it is considered a form of atypical cystic fibrosis.
	ghr.nlm.nih.gov /condition=congenitalbilateralabsenceofvasdeferens (852 words)

	Vasectomy Reversal Specialists.com - How is the vasectomy reversed?
		In theory, a vasectomy reversal should merely involve reconnecting the two ends of the vas deferens that were cut during the vasectomy.
		The diameter of the vas deferens is approximately the width of a piece of spaghetti and the threads (sutures) are finer than a human hair.
		The microsurgeon generally begins at the very end of the vas deferens and makes minute incisions sequentially back towards the testicle and evaluates the quality of the sperm and fluid found there using a separate high powered microscope also present in the operating room.
	www.vasectomyreversalspecialists.com /faq_3.htm (421 words)

	Vas Deferens: Free Encyclopedia Articles at Questia.com Online Library
		A penis and/or vas deferens was induced in the marine snails N. lapillus and H...
		Instead of cutting the sperm-carrying tubes, or vas deferens, a tiny plastic device is clamped onto each of them...procedure reduces or eliminates the damage done to the vas deferens, it is thought that reversing the effects will be straightforward...
		Excision of the vas deferens is a minor surgical procedure that...sac housing the testes) and the vas deferens is located, cut, and the ends tied...
	www.questia.com /library/encyclopedia/vas-deferens.jsp?l=V&p=1 (1323 words)

	Vasectomy-Monterey Bay Urology Associates, Santa Cruz and Watsonville, CA
		The tissue around the vas deferens is separated from it, and a loop of the vas deferens is pulled out through the small punture hole.
		When the vas deferens is returned to the scrotum the ends separate from each other, lowering the chance that the ends could stick back together.
		Infection of the vas deferens and sperm ducts next to the testicle occurs in 1-2% of cases.
	www.montereybayurology.com /officepro/Vasectomy.htm (1343 words)

	Andrology Australia - Absence of Vas Deferens & Seminal Vesicles
		Men who have an absence of the vas deferens are missing part of the tube that sperm travel along after they leave the testes.
		Men born with this problem, known as congenital absence of the vas deferens (CAVD), are usually missing both their vas deferens and two thirds of their epididymis.
		When the vas deferens and seminal vesicles are missing, it is usually possible to collect sperm directly from the testis or from the small remaining part of the epididymis and achieve pregnancies using assisted reproductive technologies.
	www.andrologyaustralia.org /pageContent.asp?pageCode=AZABSENCE (427 words)

	GENETIC DISORDERS - Congenital bilateral absence of vas deferens
		Congenital bilateral absence of vas deferens occurs in males when the tubes that carry sperm from the testes (the vas deferens) fail to develop normally.
		Mutations in the CFTR gene cause congenital bilateral absence of vas deferens.
		When congenital bilateral absence of vas deferens occurs with CFTR mutations, it is considered to be a form of atypical cystic fibrosis.
	www.medic8.com /genetics/absence-of-vas-deferens.htm (574 words)

	Urology at Hopkins: Brady Urological Institute
		The patency of the proximal vas deferens (the side closest to the testis) and the epididymal tubule is confirmed by examining the fluid from within
		The presence or absence of sperm within the vas deferens at the time of surgery determines whether or not an epididymovasostomy will be necessary and the success rates for epididymovasostomy are significantly lower than a vasovasostomy.
		However, as with duration of obstruction, the length of the proximal vas segment is not absolutely predictive of the presence of sperm within the vas deferens or the eventual outcome of a vasectomy reversal.
	urology.jhu.edu /infertility/vasectomy.php (2162 words)

	Vas Deferens - Uncyclopedia, the content-free encyclopedia
		Vas Deferns, "The Vasmister", "The Ejaculattack", was a European explorer that sailed for Spain in the early 1500's.
		It is beleived by some that he is single-handedly responsible for the incoproration of European blood into the native population, and that he is the common ancestor of all Latinos located in the Americas.
		In his twilight years, Vas was responsible for the creation of numerous significant inventions, among them the X-X-X-X-X-X-X Large condom, to be utilized later in history by the African American population, but not the Irish.
	uncyclopedia.org /wiki/Vas_Deferens (310 words)

	Vasectomy - urologychannel
		The vas deferens are part of a larger bundle of tissue, blood vessels, nerves, and lymphatic channels called the spermatic cord.
		In the no-scalpel vasectomy, a surgical clamp is used to hold the vas deferens while a puncture incision (instead of a cut) is made with special forceps.
		Because the vas deferens is not cut or cauterized, Vasclip may result in a shorter recovery time and fewer complications (e.g., swelling, inflammation, infection) than traditional vasectomy.
	www.urologychannel.com /vasectomy (819 words)

	Vasectomy reversal - MayoClinic.com
		Once the vas deferens has been opened, the surgeon will do a naked-eye inspection of the fluid that comes out as well as examine a drop of the fluid under a microscope.
		In this case, attaching the vas deferens directly to the epididymis —; a vasoepididymostomy — may be the best option.
		Experts are testing the use of artificial stents to reconstruct the vas deferens during vasectomy reversal surgery.
	www.mayoclinic.com /health/vasectomy/HQ01049 (1790 words)

	SIU SOM Histology ERG
		The vas deferens is a specialized duct, a muscular tube which carries sperm cells from the epididymis to the ejaculatory duct.
		The muscular wall of the vas is remarkably thick in proportion to the diameter of the lumen.
		From the junction of the vas with the seminal vesicle, the ejaculatory duct continues through the prostate to the urethra.
	www.siumed.edu /~dking2/erg/vas.htm (143 words)

	Urological Conditions and Treatments - Vasectomy
		The scrotum is numbed with one or more injections of local anesthetic (lidocaine), the vas deferens is gathered under the skin of the scrotum, and a small incision (usually 1 centimeter or less) is made.
		The vas deferens is then pulled through the incision, cut in two places, and a 1-centimeter segment is removed.
		Because the vas deferens is not cut or cauterized, Vasclip may result in a shorter recovery time and fewer complications (e.g., swelling, inflammation, infection) than vasectomy.
	www.uclaurology.com /conditions/Vasec36.cfm (1278 words)

	Georgia Urology - Vasectomy
		The goal of the vasectomy is to interrupt the vas deferens and prevent sperm from entering the ejaculate.
		The surgeon will then grasp the vas deferens which is readily palpable through the scrotal skin, and inject lidocaine or any other numbing medicine through the skin and into the tissue surrounding the vas deferens.
		Viable sperm may survive in the vas deferens for a variable period of time in the vas deferens and re-growth (recanalization) of the cut ends of the vas deferens can occur.
	www.georgiaurology.com /vasectomy.shtml (810 words)

	Columbia Presbyterian - Department of Urology
		The inner layer of the vas deferens is precisely connected with sutures to a small opening in a single epididymal tubule (View Figures 7a and 7b).
		The outer layer of both the vas deferens and the epididymis are then connected to obtain the final result (View Figure 7c).
		Fluid is extracted from the vas deferens by syringe (View Figure 8) and inspected using a laboratory microscope (View Figure 9).
	cpmcnet.columbia.edu /dept/urology/MaleInfertility_microsurg.html (752 words)

	No Needle No Scalpel Vasectomy available at Associated Urologists of Orange County
		Vasectomy is a nearly painless surgical procedure to cut and close off the tubes (vas deferens) that deliver sperm from the testes; it is usually performed as a means of contraception.
		Each end of the vas deferens is surgically tied off or clipped, and placed back in the scrotum. ; Most urologists cauterize the ends of the vas deferens, but others find that cauterization complicates reversal and is unnecessary. The incision is sometimes sutured and the procedure is repeated on the other side of the scrotum. ;
		. When the vas deferens is exposed, a small locking clip is applied to occlude the vas (rather than cutting and cauterizing). The incision is sometimes sutured and the procedure is repeated on the other side of the scrotum. ; The procedure is faster, and might result in less post-op pain and swelling.
	www.ocurology.com /vasectomy.html (734 words)

	Vas deferens (Site not responding. Last check: )
		The vas deferens (also called the ductus deferens) is part of the human male anatomy.
		The plural form of vas deferens is vasa deferentia.
		During ejaculation, the wall of the vas deferens thickens and thins itself, thus propelling the sperm.
	www.serebella.com /encyclopedia/article-Vas_deferens.html (121 words)

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