Inguinal canal

Inguinal canal

Infobox Anatomy
Name = inguinal canal
Latin = canalis inguinalis
GraySubject = 258
GrayPage = 1239

Caption = Front of abdomen, showing surface markings for arteries and inguinal canal. (Inguinal canal is tube at lower left.)

Caption2 = The scrotum. On the left side the cavity of the tunica vaginalis has been opened; on the right side only the layers superficial to the Cremaster have been removed. (Right inguinal canal visible at upper left.)
System =
MeshName = Inguinal+Canal
MeshNumber = A01.047.412
The inguinal canal is a passage in the anterior (toward the front of the body) abdominal wall which in men conveys the spermatic cord and in women the round ligament. The inguinal canal is larger and more prominent in men.


The inguinal canal is situated just above the medial half of the inguinal ligament.


Approximately 4cm (1.57 inches).


It is oblique directed inferiorly, anteriorly and medially.


A first-order approximation is to visualize the canal as a cylinder, stretching from the deep inguinal ring to the superficial inguinal ring.cite web |url= |title=Gross Anatomy Image |accessdate=2007-11-20 |format= |work=]

To help define the boundaries, the canal is often further approximated as a box with six sides. Not including the two rings, the remaining four sides are usually called the "anterior wall", "posterior wall", "roof", and "floor".cite book |author=Adam Mitchell; Drake, Richard; Gray, Henry David; Wayne Vogl |title=Gray's anatomy for students |publisher=Elsevier/Churchill Livingstone |location= |year=2005 |pages=260 |isbn=0-443-06612-4 |oclc= |doi=] These consist of the following:

One way to remember these structures is with the mnemonic "MALT", starting at the top and going counterclockwise:
* M - muscles
* A - aponeuroses
* L - ligaments
* T - transversalis/tendon


* in males : the spermatic cordcite web |url= |title=Anatomy Tables - Inguinal Region |accessdate=2007-11-20 |format= |work=] and its coverings + the ilioinguinal nerve.
* in females : the round ligament of the uterus + the ilioinguinal nerve.

The classic description of the contents of inguinal canal in the male are:3 arteries: artery to vas, testicular artery, cremasteric artery3 fascial layers: external spermatic,internal spermatic,cremastic3 other vessels: pampiniform plexus, vas deferens, lymphatics1 nerve: genital branch of the genitofemoral nerve (L1/2)

The ilioinguinal nerve passes through the superficial ring to descend into the scrotum, but does not formally run through the canal.


During development gonads (ovaries or testes) descend from their starting point on the posterior abdominal wall (para-aortically) and near the kidneys down the abdomen and through the inguinal canal to reach the scrotum. The testis then decends through the abdominal wall into the scrotum, behind the processus vaginalis (which later obliterates). Thus lymphatic spread from a testicular tumour is to the para-aortic nodes first, and not the inguinal nodes.


Abdominal contents (potentially including intestine) can be abnormally displaced from the abdominal cavity. Where these contents exit through the inguinal canal the condition is known as an indirect inguinal hernia. This condition is far more common in men than in women, owing to the inguinal canal's small size in women.

A hernia that exits the abdominal cavity directly through the deep layers of the abdominal wall, thereby bypassing the inguinal canal, is known as a direct inguinal hernia.


ee also

* Superficial inguinal ring
* Deep inguinal ring


External links

* - "The Male & Female Inguinal Canal"
* [ at]

Wikimedia Foundation. 2010.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • Inguinal canal — A passage in the lower anterior abdominal wall which in the male allows passage of the spermatic cord and in the female contains the round ligament. Because of the weakness it creates in the abdominal wall, it is the most frequent site for a… …   Medical dictionary

  • inguinal canal — either of a pair of openings that connect the abdominal cavity with the scrotum in the male fetus. The inguinal canals provide a route for the descent of the testes into the scrotum, after which they normally become obliterated …   The new mediacal dictionary

  • inguinal canal — noun oblique passage through the lower abdominal wall; in males it is the passage through which the testes descend into the scrotum and it contains the spermatic cord; in females it transmits the round ligament of the uterus • Syn: ↑canalis… …   Useful english dictionary

  • inguinal — inguinal, ale (in gui nal, na l ; ui se prononce comme dans huile) adj. Terme d anatomie. Qui appartient ou qui a rapport à l aine. Glande inguinale. Bandage inguinal.    Canal inguinal, espèce de canal situé plus haut que le pli de l aine,… …   Dictionnaire de la Langue Française d'Émile Littré

  • inguinal hernia — n a hernia in which part of the intestine protrudes into the inguinal canal * * * see hernia * * * herniation of a loop of intestine into the inguinal canal. See direct inguinal h. and indirect inguinal h., and see accompanying table. Called also …   Medical dictionary

  • Inguinal orchiectomy — Intervention ICD 9 CM 62.3 62.4 Inguinal orchiectomy (also spelled orchidectomy) is a …   Wikipedia

  • Inguinal — In gui*nal, a. [L. inguinalis, fr. inguen, inguinis, the groin: cf. F. inguinal.] (Astron. & Med.) Of or pertaining to, or in the region of, the inguen or groin; as, an inguinal canal or ligament; inguinal hernia. [1913 Webster] {Inguinal ring}.… …   The Collaborative International Dictionary of English

  • Inguinal ring — Inguinal In gui*nal, a. [L. inguinalis, fr. inguen, inguinis, the groin: cf. F. inguinal.] (Astron. & Med.) Of or pertaining to, or in the region of, the inguen or groin; as, an inguinal canal or ligament; inguinal hernia. [1913 Webster]… …   The Collaborative International Dictionary of English

  • inguinal ring — n either of two openings in the fasciae of the abdominal muscles on each side of the body that are the inlet and outlet of the inguinal canal, give passage to the spermatic cord in the male and the round ligament in the female, and are a frequent …   Medical dictionary

  • Inguinal hernia — eMedicine2|ped|2559 MeshName = Hernia,+Inguinal MeshNumber = C06.405.293.249.437 Inguinal hernias (IPAEng|ɪnˈgwinəl ˈhɝniəz) are protrusions of abdominal cavity contents through the inguinal canal. They are very common (it is estimated that 5% of …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”