17. Inguinal canal Flashcards Preview

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Flashcards in 17. Inguinal canal Deck (16)

site of protrusion of indirect hernia

deep ( internal ) inguinal ring


inguinal canal conceys

men --> the spermatic cord
women --> the round ligament of uterus


fascia of the spermatic cord

external spermatic fascia ( external oblique)
cremasteric muscle and fascia ( internal oblique)
internal spermatic fascia ( transvesali fascia )


structure within spermatic cord and functions ( not the fascia)

1. Vas ( ductus deferens --> conveys sperm from epidiymis to eaculation duct
2. testicular artery ( branch of abdominal aorta ) --> testis and epidimidis
3. Pampiform venous plexus --> vascular network that converges to form testicular vein
4. genital branch of genitofemoral nerve --> cremaster muscle
5. artery to vas deferans ( branch of inferior vesical artery)
6. autonomic nerve fibers --> SMS in vessels, testis, ductus deferens and epididymis
7. Lymphatic vessels --> drain from testis and associated structures to lumbar and pre- aortic nodes


inguinal - inferior ( floor)

inguinal ligament ( + lacunar ligament)


superior (roof)

arching fibers of internal abdominal oblique muscle and transversus abdominal muscle and transverlis fascia


anterior wall

- aponeurosis of external oblique
-internal oblique ( lateral third of canal only)


posterior wall

- transversalis fascia
- conjoint tendon ( medial part of posterior wall)


• A patient has an indirect hernia. Through which structure does this hernia protrude?

The internal inguinal ring


• Name the layers that compose the spermatic cord, from the most superficial to the deepest layer.

External spermatic fascia, cremasteric muscle and fascia, internal spermatic fascia


• From the most superficial layer to the deepest, what are the three muscles that cover the internal (deep) inguinal ring?

External oblique, internal oblique, and transversus abdominis


• A male patient has a direct inguinal hernia. Between which two structures do you typically find a direct inguinal hernia?

The inferior epigastric vessels and the rectus abdominis


• A male patient has a direct inguinal hernia. Through what structure does the hernia protrude?

Abdominal wall


• What muscle layer does the internal spermatic fascia derive from?

Transversalis fascia


• A patient has a damaged cremasteric muscle in the spermatic cord. What muscle layer does the cremasteric muscle originate from?

Internal oblique


• A surgeon cuts the external spermatic fascia of the spermatic cord. What muscle layer does this layer originate from?

External oblique

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