deep inguinal ring

At the other end of the canal, the deep inguinal ring forms the entrance.

Deep inguinal ring (annulus inguinalis profundus)

Note that the ilioinguinal nerve does not pass through the deep inguinal ring, and therefore it only travels through part of the inguinal canal.

It passes outward on the psoas major muscle, and pierces the fascia transversalis, or passes through the deep inguinal ring.

In an indirect inguinal hernia, the protrusion passes through the deep inguinal ring and is located lateral to the inferior epigastric artery.

The spermatic cord in the male and the round ligament of the uterus in the female pass through the transversalis fascia at a spot called the deep inguinal ring.

An indirect inguinal hernia is an inguinal hernia that results from the failure of embryonic closure of the deep inguinal ring after the testicle has passed through it.

The deep inguinal ring, which is the beginning of the inguinal canal, remains as an opening in the fascia transversalis, which forms the muscular outer wall for the spermatic cord.

Properitoneal hernia: rare hernia located directly above the peritoneum, for example, when part of an inguinal hernia projects from the deep inguinal ring to the preperitoneal space.

The deep inguinal ring (internal or deep abdominal ring, abdominal inguinal ring, internal inguinal ring) is the entrance to the inguinal canal.

The surface marking of the deep inguinal ring is classically described as immediately above the midpoint of the inguinal ligament (midway between the anterior superior iliac spine and the pubic tubercle).

Below the superficial inguinal ring they unite to form three or four veins, which pass along the inguinal canal, and, entering the abdomen through the deep inguinal ring, coalesce to form two veins.

Indirect inguinal hernias occur when abdominal contents protrude through the deep inguinal ring, lateral to the inferior epigastric vessels; this may be caused by failure of embryonic closure of the processus vaginalis.

This is in contrast to an indirect inguinal hernia, which will protrude laterally to the inferior epigastric artery and is most commonly due to an embryological defect in the closure of the deep inguinal ring.

"Krönlein's hernia": A properitoneal inguinal hernia; a hernia having a double sac, one part in the inguinal canal, and the other part projecting from the deep inguinal ring in the subperitoneal tissues.

The round ligament leaves the pelvis via the deep inguinal ring, passes through the inguinal canal and continues on to the labia majora where its fibers spread and mix with the tissue of the mons pubis.

This later case is due to the placement of the opening of the deep inguinal ring in the space lateral to the lateral umbilical fold, which allows the passage of the ductus deferens, testicular artery, and other components of the spermatic cord in men, or the round ligament of the uterus in women.