Inguinal Canal

Question 1

What is the path of the inguinal canal?

Answer 1

From deep (internal) inguinal ring to superficial (external) inguinal ring

Question 2

What is the length of the inguinal canal?

Answer 2

4cm

Question 3

What is the course of the inguinal canal?

Answer 3

Runs parallel to and just above (1.25 cm) the inguinal ligament

Question 4

What and where is the inguinal ligament?

Answer 4

Extends from ASIS to pubic tubercle

Inferior border of aponeurosis of external oblique

Question 5

What is another name for the inguinal ligament?

Answer 5

Poupart’s Ligament

Question 6

What and where is the superficial inguinal ring?

Answer 6

Just above the pubic bone near the pubic tubercle - represents a gap in the aponeurosis of the external oblique

Question 7

What is the conjoined tendon?

Answer 7

A common aponeurosis at the pubic tubercle formed by the union of the transverse abdominis and internal oblique muscles

Question 8

What is the deep inguinal ring?

Answer 8

Represents a gap in the transversalis fascia

Question 9

The male’s spermatic cord is comparable to what of a female?

Answer 9

Female’s round ligament of uterus

Question 10

What is the muscle of the scrotum?

Answer 10

Dartos muscle

Question 11

What are the three coverings of the spermatic cord?

Answer 11

Internal Spermatic fascia
Cremaster muscle (and its fascia)
External spermatic fascia

Question 12

What are the components of the abdominal wall?

Answer 12

Deep to superficial
Peritoneum
Subperitoneal fat
Transversalis fascia
Transversus abdominis
Internal oblique
External oblique
Subcutaneous fat
Skin
(PSTTIES)

Question 13

What Is the anterior wall of the inguinal canal?

Answer 13

Aponeurosis of external oblique

Question 14

What is the posterior wall of the inguinal canal?

Answer 14

Transversalis fascia

Question 15

What is the medial wall of the inguinal canal?

Answer 15

Conjoined tendon and the rectus sheath

Question 16

What is the lateral wall of the inguinal canal?

Answer 16

Internal oblique and transversus abdominis

Question 17

What is the floor of the inguinal canal?

Answer 17

Inguinal ligament

Question 18

What is the roof of the inguinal canal?

Answer 18

Arched fibers of internal oblique and transversus abdominis

Question 19

Types of inguinal hernias

Answer 19

Indirect inguinal hernia

Direct inguinal hernia

Question 20

What percentage of male hernias are in the inguinal region?

Answer 20

97%

Question 21

How much more common are inguinal hernias in men than women?

Answer 21

6-20 times for common

Question 22

Why are inguinal hernias more common in the men than in women?

Answer 22

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

Question 23

What contracts to close the canal during coughing, etc?

Answer 23

Transversus abdominis

Internal oblique muscles (forming arched roof)

Question 24

What are the constituents of the spermatic cord?

Answer 24

Fused peritoneum of processus vaginalis

Areolar ct with fat

Question 25

What is the spermatic cord comparable to for women?

Answer 25

Lower part of round ligament in uterus

Question 26

What is an indirect inguinal hernia?

Answer 26

Peritoneal sac leaves abdomen through deep inguinal ring | May travel entire length of inguinal canal is left unrepaired

Question 27

What is a direct inguinal hernia?

Answer 27

Peritoneal sac leaves abdomen passing through and around conjoined tendon

Question 28

What type of inguinal hernia is most common?

Answer 28

Indirect inguinal hernia

Question 29

What are the constituents of the spermatic cord?

Answer 29

``` 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 ```