Vessels and Nerves of the Abdominal Wall Flashcards
The branches that supply the superficial part of the ventral abdomen are branches of what artery
Superficial epigastric
The external pudendal artery emerges from…
The superficial inguinal ring
What artery appears as a continuation of the external pudendal dorsal to the superficial inguinal lymph node
Caudal superficial epigastric
What does the caudal superficial epigastric artery supply in the male
The prepuce
Small branches of the external pudendal artery supply ___ in the female and _____ in the male
The labia; the scrotum
Where are the superficial inguinal lymph nodes
Adjacent to the caudal superficial epigastric artery
The afferent lymphatics of the superficial inguinal lymph nodes drain…
The mammae, prepuce, scrotum, and ventral abdominal wall as far cranially as the umbilicus
The efferent lymphatics of the superficial inguinal lymph nodes move through…
The inguinal canal
What 4 vessels primarily supply the abdominal wall
Cranial abdominal artery, cranial epigastric artery, caudal epigastric artery, and the deep circumflex iliac artery
Where can superficial branches of the cranial abdominal artery be found
Emerging from the dorsolateral abdominal wall, caudal to the last rib
What 2 nerves/arteries perforate the internal abdominal oblique
Lateral cutaneous femoral nerve and the deep circumflex iliac artery (cranial to the cranioventral iliac spine)
What does the lateral cutaneous femoral nerve arise from
L4
What does the deep circumflex iliac artery arise from
The aorta
The ventral branches of the first 4 lumbar nerves form the…
Cranial iliohypogastric, caudal iliohypogastric, ilioinguinal and lateral cutaneous femoral nerves respectively
What nerves pass through the aponeurosis of origin of the transversus abdominis
Cranial and caudal iliohypogastric and ilioinguinal nerves
Where do the medial branches of the cranial and caudal iliohypogastric and ilioinguinal nerves go
They descend between the transversus abdominis and internal abdominal oblique to the rectus abdominis, which they innervate along with the underlying peritoneum
Where do the lateral branches of the cranial and caudal iliohypogastric and ilioinguinal nerves
They perforate the internal abdominal oblique and descend between the oblique muscles, which they innervate
The genitofemoral nerve arises from…
The ventral branches of the 3rd and 4th lumbar nerves
What is the genitofemoral nerve bound to
The external pudendal vein
What does the genitofemoral nerve innervate
Male: cremaster muscle, prepuce
Both sexes: the skin covering the inguinal region and proximal medial thigh
The spermatic fascia is a continuation of…
The abdominal and transversalis fascia
The cremaster muscles arises from ____ and attaches to ____
The caudal free border of the internal abdominal oblique; the vaginal tunic near the testis
What is the vaginal process
A diverticulum of the peritoneum in both sexes (vaginal tunic in the male, it envelopes the testes and the spermatic cord)
The parietal vaginal tunic extends from ____ to ____
The deep inguinal ring to the bottom of the scrotum
