Lecture 24: Abd and Pelvis: Walls & Peritoneum Flashcards
External Abdominal Oblique m. (O, I)
O: lateral surfaces of ribs and TL fascia
I: linea alba and prepubic tendon by wide aponeurosis
Internal Abdominal Oblique m. (O, I)
O: TL fascia, ventral iliac spines and inguinal ligament
I: costal arch, rectus abdominis, linea alba, and prepubic tendon by wide aponeurosis
Transversus abdominis m. (O, I)
O: medial surfaces of last 4-5 ribs and transverse processes of lumbar vertebrae
I: linea alba
Rectus abdominis m.
courses between prepubic tendon and sternum and first few ribs
What aponeuroses form the rectus sheath?
Ext abd oblique, int abd oblique, transversus abdominis mm.
What are the three sections of the rectus sheath?
Cranial to umbilicus, caudal to umbilicus, cranial to pubis
Ligament in cranial to umbilicus region of rectus sheath
falciform ligament
Ligament in caudal to umbilicus region of rectus sheath
middle umbilical ligament
What 5 structures pass through the inguinal canal?
-External pudendal a/v
-Genitofemoral nerve
-Lymphatics
-Vaginal process/tunic
-Spermatic cord
T/F: the superficial inguinal ring is a slit in the aponeurosis of the ext abd oblique muscle
True
What arteries supply the abdominal wall with blood?
Deep circumflex iliac, cranial abdominal, cranial and caudal epigastric (deep and superficial) arteries
The caudal epigastric aa branch off what trunk?
pudendoepigastric trunk
The cranial epigastric aa branch off which artery?
internal thoracic artery
T/F: The deep cr/cd epigastric arteries interact with the mammary glands
False; superficial not deep
Nerve at T13
costoabdominal nerve
Nerve at L1
cranial iliohypogastric nerve
Nerve at L2
caudal iliohypogastric nerve
Nerve at L3
ilioinguinal nerve
Nerve at L4
Lateral cutaneous femoral nerve
3 portions of peritoneum
-parietal peritoneum
-visceral peritoneum
-connecting peritoneum
The two mesenteries of the connecting peritoneum
Dorsal and ventral mesentery
Where is the parietal peritoneum?
Along body wall
Where is the visceral peritoneum?
Covering visceral organs of peritoneal cavity
What connective tissue glues parietal peritoneum with the cavity walls?
Fascia transversalis
What connects the greater curvature of the stomach, spleen and proximal duodenum with the pancreas?
greater omentum
Falciform ligament connects what?
Liver with ventral abdomen
Hepatogastric ligament (lesser omentum)
connects lesser curvature of stomach with the liver
Hepatoduodenal ligament (lesser omentum)
connects first part of duodenum with liver
