Inguinal Canal

Question 1

What is the inferior border of the inguinal canal?

Answer 1

Inguinal ligament

Attaches from ASIS to pubic tubercle

Question 2

What is the anatomical landmark of the deep inguinal ring?

Answer 2

Midpoint of the inguinal ligament

Medial demarcated by the inferior epigastric vessels

Question 3

What is the anatomical landmark of the superficial inguinal ring?

Answer 3

2cm above and medial to pubic tubercle

Question 4

What is the superior border of the inguinal canal?

Answer 4

Internal oblique and transversus abdominus

Question 5

What is the anterior border of the inguinal canal?

Answer 5

Skin

Aponeurosis of EO

Question 6

What is the posterior border of the inguinal canal?

Answer 6

Transversalis fascia

Question 7

What are the contents of the inguinal canal?

Answer 7

Round ligament (F) 
Spermatic cord (M)
Ilioinguinal nerve (nerve root L1)

Question 8

What are the three fascial layers of the spermatic cord?

Answer 8

From outermost to innermost
External spermatic (formed by EO aponeurosis)
Cremasteric (formed by IO)
Internal spermatic (formed by transversalis fascia)

Question 9

What are the contents of the spermatic cord?

Answer 9

3 arteries - testicular, artery to the vas and cremasteric artery
3 nerves - ilioinguinal, cremasteric and sympathetic fibres
3 other structures: vas deferens, lymphatics and pampiniform venous plexus

Question 10

What are the borders of Hasselbach’s triangle?

Answer 10

Medial: Rectus Abdominus
Lateral: Inferior Epigastric Artery
Inferior: Inguinal Ligament

Question 11

Which structure strengthens the posterior wall of the inguinal canal?

Answer 11

Conjoint tendon

Question 12

What does the ilioinguinal nerve innervate?

Answer 12

Mons pubis
Labia majora
Conjoint tendon

Question 13

What is the course of the ilioinguinal nerve?

Answer 13

Passes down the anterior abdominal wall between the external and internal oblique and exits via the superficial inguinal ring