Inguinal Structures

Question 1

Inguinal canal

Answer 1

Perforation in abdominal wall in region of groin, extending between superficial and deep inguinal rings; passageway for:
-External pudendal a. and v.
-Genitofemoral n.
-Lymphatics
-Vaginal tunic (male)/vaginal process (female)
-Spermatic cord (male)

Question 2

Superficial inguinal ring

Answer 2

Slit in aponeurosis of external abdominal oblique m.

Question 3

Deep inguinal ring

Answer 3

Medial boundary: rectus abdominis m.
Cranial boundary: internal abdominal oblique m.
Caudal boundary: inguinal ligament

Question 4

Inguinal ligament

Answer 4

Caudal border of aponeurosis of external abdominal oblique m.
Courses between tuber coxae and iliopubic eminence
Separates vascular lacuna from inguinal canal

Question 5

Vascular lacuna

Answer 5

Opening in body wall for vessels coursing to pelvic limb
Separated from inguinal canal by inguinal ligament

Question 6

External pudendal a.

Answer 6

External iliac a. -> deep femoral a. -> pudendoepigastric trunk -> caudal (deep) epigastric a. and external pudendal a.

Question 7

Genitofemoral n.

Answer 7

Motor to cremaster m.
Sensory from skin in inguinal region, proximal medial thigh