Flashcards in GI Deck (98)
Where would you insert a needle for paracentesis?
Lateral to the rectus sheath
Why must you insert the needle in paracentesis lateral to the rectus sheath?
To avoid the inferior epigastric vessels
Which artery does the inferior epigastric artery arise from?
The external illiac artery (just medial to the deep inguinal ring)
What is a condensation?
Double layers of peritoneum that attach organs to each other or to the abdominal wall
What attaches the liver to the anterior abdo wall?
Where does the lesser omentum attach?
Stomach to liver
Where does the greater omentum attach?
Stomach to transverse colon
How does the greater sac communicate with the lesser sac?
Through the omental foramen
What is the other name for the lesser sac?
Where is the portal triad?
Within the free edge of the lesser omentum
What are the pouches in the male?
What are the pouches in the female?
Rectouterine (pouch of douglas)
Where do sympathetic nerves leave the spinal cord in to supply the abdominal organs
T5 to L2
What happens to sympathetic nerves in the abdomen in the sympathetic chain?
Do not synapse
Enter the abdominopelvic splanchnic nerves
Where so sympathetci nerves fibres synapse for the abdo organs?
Prevertebral ganglia which are anterior to the aorta at the exit point of the major branches of the abdo aorta
How do the sympathetic nerve fibres reach the abdo organs?
Postsynaptic nerve fibres pass from prevertebral ganglia onto the surface of the artrial branches leaving the aorta.
In the periarterial plexus they 'travel along' the arteries to the organs
How is the adrenal gland nerve supply unique?
Thes sympathertic nerves leave the spinal cord in the adominopelvic splanchnic at T10-L1 but they do not synpase at the prevertebral ganglia. Instead they travel along the periarterial plexus and synapse directly onto the organ
How do parasympathetic nerve fibres reach the abdo organs?
Cranial nerve X
Travel towards and into the periarterial plexis.
Carried to argans, synsapse in the ganglia
Where does the vagus nerve supply up to in the GI tract
Distal end of the transverse colon
What supplies the descending colon and anal canal parasympathetically
Pelvic splanchnic nerves (S2, 3, 4)
Where do visceral afferents from the foregut enter the spinal cord?
Where do visceral afferents enter the spinal cord from the midgut organs
Where do visceral afferents from teh hingut organs enter the spinal cord?
What group of nerves supplies the body wall of the abdomen?
How do the thoracoabdominal nerves arise?
7th to 11th intercostal nerves travel anteriorly and then their terminal branches leave the intercostal spaces between the internal oblique and transversus abdominus
Name the three thoracoabdominal nerves
Iliohypogastric (L1 first half)
Ilioinguinal (L1 second half)
All anterior ramuses
What is the other name for jaundice?
Where does the breakdown of redblood cells occur?
What is in the portal triad?
Common bile duct
Hepatic portal vein