Deep inguinal ring 4764748 216229269 2008-05-31T18:20:28Z 92.10.4.254 /* Location */ {{Infobox Anatomy | Name = {{PAGENAME}} | Latin = annulus inguinalis profundus | GraySubject = 286 | GrayPage = 1315 | Image = Gray1227.png | Caption = Front of [[abdomen]], showing surface markings for [[arteries]] and [[inguinal canal]]. (Abdominal inguinal ring labeled at lower left.) | Image2 = Inguinalhernia.gif | Caption2 = Diagram of an [[indirect inguinal hernia|indirect]], [[scrotum|scrotal]] [[inguinal hernia]] ( [[Anatomical position|median]] view from the left).| System = | MeshName = | MeshNumber = | DorlandsPre = a_50 | DorlandsSuf = 12143730 | }} The '''deep inguinal ring''' ('''internal or deep abdominal ring''', '''abdominal inguinal ring''', '''internal inguinal ring''') is the entrance to the [[inguinal canal]]. ==Location== The surface anatomy of the point is disputed, but in a recent study<ref>{{cite journal |author=Koliyadan S, Narayan G, Balasekran P |title=Surface marking of the deep inguinal ring |journal=Clin Anat |volume=17 |issue=7 |pages=554–7 |year=2004 |pmid=15376291 |doi=10.1002/ca.10257}}</ref> it was found to be at a point between the mid-inguinal point (situated midway between the [[anterior superior iliac spine]] and the [[pubic symphysis]]) and the midpoint of the [[inguinal ligament]] (ie. midway between the [[anterior superior iliac spine]] and the [[pubic tubercle]]. Traditionally either one of these 2 sites was claimed as its location. Some sources state that it is at the layer of the [[transversalis fascia]].<ref name="isbn0-7817-5309-0">{{cite book |author=Kyung Won, PhD. Chung |title=Gross Anatomy (Board Review) |publisher=Lippincott Williams & Wilkins |location=Hagerstwon, MD |year=2005 |pages=198 |isbn=0-7817-5309-0 |oclc= |doi=}}</ref> ==Shape== It is of an oval form, the long axis of the oval being vertical; it varies in size in different subjects, and is much larger in the male than in the female. ==Boundaries== It is bounded, above and laterally, by the arched lower margin of the transversalis fascia; below and medially, by the [[inferior epigastric vessels]]. ==Transmission== It transmits the [[spermatic cord]] in the male and the [[round ligament of the uterus]] in the female. ==Extensions== From its circumference a thin funnel-shaped membrane, the [[infundibuliform fascia]], is continued around the cord and testis, enclosing them in a distinct covering. ==Additional images== <gallery> Image:Gray401.png|The abdominal inguinal ring. Image:Gray547.png|The relations of the femoral and abdominal inguinal rings, seen from within the abdomen. Right side. </gallery> == References == {{reflist}} ==See also== * [[Inguinal canal]] * [[Inguinal hernia]] * [[Superficial inguinal ring]] ==External links== * {{SUNYAnatomyFigs|36|01|03}} - "The inguinal canal and derivation of the layers of the spermatic cord." * {{SUNYAnatomyImage|7|3|62}} * {{GPnotebook|-261423027}} * {{NormanAnatomy|inguinalregion}} * {{UMichAtlas|abdo_wall65}} - "The Coverings of the Inguinal Canal, External & Internal Oblique & Transversus Abdominis Removed" * [http://www.burrill.demon.co.uk/meddoc/hernia.html The Inguinal Canal and Hernias (includes diagram] at burrill.demon.co.uk) {{muscle-stub}} {{Gray's}} {{Torso general}}