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Lines the inner surface of the abdominal muscles. Contains the Deep Inguinal Ring.
Boundaries of the Inguinal Canal
Deep: Deep Inguinal Ring
Superficial: Superficial Inguinal Ring
Anterior: Aponeurosis of the External Abdominal Oblique Muscle
Inferior (floor): Inguinal Ligament and Lacunar Ligament
Superior (Roof): Arching fibers of the Internal Abdominal Oblique and the Transversus Abdominis Muscle
Posterior: Transversalis Fascia, reinforced by the Conjoint Tendon
Direct Inguinal Hernias
Viscera exiting the abdominal cavity medial to the inferior epigastric vessels.
Indirect Inguinal Hernia
Viscera exiting the abdominal cavity through the deep inguinal ring lateral to the epigastric vessels, follows the inguinal canal
A band of tissue that anchors the inferior pole of the testis to the scrotum. Remnant of the Gubernaculum Testis.
Internal Spermatic Fascia
Derived from the Transversalis Fascia, the innermost layer of the spermatic cord.
Layers of the Spermatic Cord
External Spermatic Fasica, Cremasteric muscle and fascia, and the Internal Spermatic Fascia.
Spermatic Cord Contents
Ductus Deferens, Artery of Ductus Deferens, Testicular Artery, Pampiniform Plexus, Lymph Vessles, and Autonomic Nerve fibers
Pampiniform Plexus of Veins
Numerous veins surrounding the Testicular Artery, allowing the arterial blood to be cooled before entering the scrotum.
Surgical Interruption of the Ductus Deferens, disrupting transportation of spermatozoa but not production
A serous sac surrounding the testes made from the Parietal Peritoneum. It has a visceral and parietal layer, with a potential space.
Parietal Layer of the Tunica Vaginalis
Located around the testes, created by the Parietal Peritoneum and adhered to the spermatic fascia, not located on the posterior side of the testis
Visceral Layer of the Tunica Vaginalis
Located around the testes except for the posterior end, made from parietal peritoneum and adhered directly on to the testis
Fibrous capsule of the testis. Divides the testis into lobules as it extends to the interior.
Lymphatic Drainage of Scrotum
Lymphatic Drainage to Inguinal Lymph Node. Inflammation may cause tender, enlarged superficial inguinal lymph nodes.
Lymphatic Drainage of Testis
Lymph vessels follow testicular vessels through inguinal canal and to the abdominal cavity draining into the lumbar nodes and preaortic lymph nodes. Tumors may metastasize to lumbar and preaortic lymph nodes, not to superficial lymph nodes.
Median Umbilical Fold
Midline fold Inferior to the umbilicus. Contains the Urachus, obliterated allantoic duct.
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