Abdomen Structure & Function

Question 1

Retro peritoneal organs?

Answer 1

SAD PUCKER
Supra-renal gland
Aorta and IVC
Duodenum
Pancreas
Ureters
Colon (except sigmoid & transverse colon)
Kidneys
Esophagus (lower 2/3rds)
Rectum

Question 2

External Oblique Attachments, Function & NV supply?

Answer 2

PA: external surfaces of ribs 5-12
DA: linea alba, public tubercle, ant. 1/2 iliac Crest
N: Thoracoabdominal nerves (ventral rami of inferior 6 Tx & subcostal nerves)
A: flexion & C/L rotation

Question 3

Layers of abdominal wall?

Answer 3

Sup > deep:
- Skin
- subcutaneous tissue/superficial fascia
Sup: fatty, deep: membranous layers
- 3 layers of deep fascia separating EO, IO, TA
- transversalis fascia
- extraperitoneal fat
- parietal peritoneum

Question 4

Where does the inguinal ligament run?

Answer 4

ASIS to public tubercle

Question 5

Internal oblique attachments

Answer 5

PA: Thoracolumbar fascia, ant 2/3 of iliac Crest, lateral 1/2 of inguinal ligament
DA: INF borders of ribs 10-12, linea alba

Question 6

Internal Oblique NV supply?

Answer 6

Thoracoabdominal nerves (V. Rami of inferior 6 Tx nerves) & first Lx nerve

Question 7

Rectus abdominis attachments?

Answer 7

O: Pubic symph & pubic crest
I: XP & cc’s 5-7
N: v.rami of inf 6 thoracoabdominal nerves

Question 8

What is the rectus sheath formed by and what does it contain?

Answer 8

Aponeuroses of TA, EO, IO

Contains the rectus abdominis and pyramidalis as well as other NV vessels