VAN 221: Veterinary Splanchnology and Applied Anatomy (1+1)

INGUINAL CANAL

Boundary

• Anterior wall is formed by posterior part of internal obliqus muscle. Posterolateral wall is formed by portion of aponeurosis of the external oblique muscle
• Internal inguinal ring is formed by free borders of the internal obliqus muscle anteriorly and upper border of the inguinal ligament posteriorly
• External inguinal ring is in the aponeurosis of the external obliqus muscle of the abdomen

Structures that pass through the canal

• External pudic artery and vein, inguinal nerves and lymph vessels
• Additional structures in male : Spermatic cord consisting of internal spermatic artery, vein, nerve (anterior part) and vas deferens (posterior part), cremaster externus muscle and tunica vaginalis

Clinical importance

• Inguinal hernia is often seen in some animals wherein intestines herniated through inguinal canal