Inguinal Canal Flashcards
What is the path of the inguinal canal?
From deep (internal) inguinal ring to superficial (external) inguinal ring
What is the length of the inguinal canal?
4cm
What is the course of the inguinal canal?
Runs parallel to and just above (1.25 cm) the inguinal ligament
What and where is the inguinal ligament?
Extends from ASIS to pubic tubercle
Inferior border of aponeurosis of external oblique
What is another name for the inguinal ligament?
Poupart’s Ligament
What and where is the superficial inguinal ring?
Just above the pubic bone near the pubic tubercle - represents a gap in the aponeurosis of the external oblique
What is the conjoined tendon?
A common aponeurosis at the pubic tubercle formed by the union of the transverse abdominis and internal oblique muscles
What is the deep inguinal ring?
Represents a gap in the transversalis fascia
The male’s spermatic cord is comparable to what of a female?
Female’s round ligament of uterus
What is the muscle of the scrotum?
Dartos muscle
What are the three coverings of the spermatic cord?
Internal Spermatic fascia
Cremaster muscle (and its fascia)
External spermatic fascia
What are the components of the abdominal wall?
Deep to superficial Peritoneum Subperitoneal fat Transversalis fascia Transversus abdominis Internal oblique External oblique Subcutaneous fat Skin (PSTTIES)
What Is the anterior wall of the inguinal canal?
Aponeurosis of external oblique
What is the posterior wall of the inguinal canal?
Transversalis fascia
What is the medial wall of the inguinal canal?
Conjoined tendon and the rectus sheath
What is the lateral wall of the inguinal canal?
Internal oblique and transversus abdominis
What is the floor of the inguinal canal?
Inguinal ligament
What is the roof of the inguinal canal?
Arched fibers of internal oblique and transversus abdominis
Types of inguinal hernias
Indirect inguinal hernia
Direct inguinal hernia
What percentage of male hernias are in the inguinal region?
97%
How much more common are inguinal hernias in men than women?
6-20 times for common
Why are inguinal hernias more common in the men than in women?
The round ligament of the uterus passing through the canal is smaller than spermatic cord of men - women’s canal is tighter and less prone to herniation
What contracts to close the canal during coughing, etc?
Transversus abdominis
Internal oblique muscles (forming arched roof)
What are the constituents of the spermatic cord?
Fused peritoneum of processus vaginalis
Areolar ct with fat
What is the spermatic cord comparable to for women?
Lower part of round ligament in uterus
What is an indirect inguinal hernia?
Peritoneal sac leaves abdomen through deep inguinal ring
May travel entire length of inguinal canal is left unrepaired
What is a direct inguinal hernia?
Peritoneal sac leaves abdomen passing through and around conjoined tendon
What type of inguinal hernia is most common?
Indirect inguinal hernia
What are the constituents of the spermatic cord?
Deep to Superficial Fused Peritoneum of processus vaginalis [unfused peritoneum=TV (tunica vaginalis)] Areolar CT with fat COVERINGS of cord Internal spermatic fascia Cremaster muscle and its fascia External spermatic fascia SCROTUM Dartos muscle and its fascia Skin
