Crura of superficial inguinal ring
Encyclopedia
The superficial inguinal ring
is bounded below by the crest of the pubis
; on either side by the margins of the opening in the aponeurosis
, which are called the crura of the ring; and above, by a series of curved intercrural fibers
.
Superficial inguinal ring
The superficial inguinal ring is an anatomical structure in the anterior wall of the human abdomen. It is a triangular opening that forms the exit of the inguinal canal, which houses the ilioinguinal nerve, the genital branch of the genitofemoral nerve, and the spermatic cord or the round ligament...
is bounded below by the crest of the pubis
Pubis (bone)
In vertebrates, the pubic bone is the ventral and anterior of the three principal bones composing either half of the pelvis.It is covered by a layer of fat, which is covered by the mons pubis....
; on either side by the margins of the opening in the aponeurosis
Aponeurosis
Aponeuroses are layers of flat broad tendons. They have a shiny, whitish-silvery color, are histologically similar to tendons, and are very sparingly supplied with blood vessels and nerves. When dissected, aponeuroses are papery, and peel off by sections...
, which are called the crura of the ring; and above, by a series of curved intercrural fibers
Intercrural fibers
The intercrural fibers are a series of curved tendinous fibers, which arch across the lower part of the aponeurosis of the Obliquus externus, describing curves with the convexities downward....
.
- The inferior crus (or lateral, or external pillar) is the stronger and is formed by that portion of the inguinal ligamentInguinal ligamentThe inguinal ligament is a band running from the pubic tubercle to the anterior superior iliac spine. Its anatomy is very important for operating on hernia patients.-Anatomy:...
which is inserted into the pubic tuberclePubic tubercleThe pubic tubercle is a prominent forward-projecting tubercle on the upper border of the medial portion of the superior ramus of the pubis...
; it is curved so as to form a kind of groove, upon which, in the male, the spermatic cordSpermatic cordThe spermatic cord is the name given to the cord-like structure in males formed by the ductus deferens and surrounding tissue that run from the abdomen down to each testicle.-Contents of spermatic cord:...
rests. - The superior crus (or medial, or internal pillar) is a broad, thin, flat band, attached to the front of the pubic symphysisPubic symphysisThe pubic symphysis or symphysis pubis is the midline cartilaginous joint uniting the superior rami of the left and right pubic bones. It is located anterior to the urinary bladder and superior to the external genitalia; for females it is above the vulva and for males it is above the penis...
and interlacing with its fellow of the opposite side.
External links
- medial
- - "Anterior Abdominal Wall: Borders of the Superficial Inguinal Ring"
- lateral
- - "Anterior Abdominal Wall: Borders of the Superficial Inguinal Ring"