Abdomen Flashcards
Cremasteric reflex utilizes sensory and motor fibers in the ventral ramus of?
L1 spinal nerve
Layers of abdominal wall
(9) Skin Superficial fascia Campers Scarpas Deep fascia Muscles Transversalis fascia Extraperitoneal fat Parietal peritoneum
Ligament that conducts the portal triad
Hepatoduodenal ligament
Foregut, a portion of thenprimitive gut, is supplied by what blood vessel
Celiac trunk/artery (level of T12)
Midgut, a part of the primitive gut, is supplied by what blood vessel?
Superior mesenteric artery (level of L1)
Hindgut, a portion of the primitive git, is supplied by what blood vessel?
Inferior mesenteric artery (level of L3)
Common site of aortic aneurysm
Proximal to bifurcation of the aorta at level of L4 vertebra
L and R hepatic veins drain into
IVC
R gonadal and R suprarenal veins drain into
IVC
L gonadal and suprarenal veins drain into
L renal
R gastroepiploic veins drains into
Superior Mesenteric Vein
L gastroepiploic vein drains into
Splenic vein
R colic drains into
Superior Mesenteric Vein
L Colic drains into
Inferior Mesenteric Vein
Length of esopohagus
23-25 cm long
Accompanies esophagus through the diaphragm
Vagus nerve (left and right vagi lie on its anterior and posterior surfaces) “LARP” left anterior right posterior
Esophagus passes through diaphragm at what vertebral level
T10
Blood supply of upper third of esophagus
Inferior thyroid artery from subclavian artery
Blood supply of middle third of esophagus
Descending thoracic aorta
Blood supply of,ower third of esophagus
Left gastric artery from celiac trunk of abdl aorta
Venous drainage of esophagus
Upper third - inferior thyroid vein
Middle third - azygous vein
Lower third - left gastric vein
Capacity of stomach
1.5 L
Gastric ulcers are most commonly found in which part of the stomach?
Body
Carcinomas of the stomach are most commonly found where?
Pylorus
Parasympathetic nerve supply of the stomach
Vagus nerve
Syp athetic nerve supply of the stomach
T6 to t9
Length of duodenum
10 inches
How many divisions does the duodenum have and what are they?
Superior - 5cm and lies anterolateral to border of L1
Descending - 7-10cm, descends along sides of L1 to L3
Horizontal - 6-8cm and crosses L3
Ascending - 5 cm and begins at the L of L3 and rises superiorly as far as superior border of L2
Remnant of umbilical vein
Ligamentum teres/round ligament of liver
Remnant of ductus venosus
Ligamentum venosum
Blood supply of pancreas
Superior pancreaticoduodenal artery (hepatic-celiac)
Inferior pamcreaticpduodenal artery (from SMA)
Pancreatic arteries from Splenic
Left lobe of liver is composed of what segments?
II (lateral superior) and III (lateral inferior)
What composes the portal triad
Portal vein
Hepatic artery
Bile duct
Where is a liver biopsy done?
Right 10th intercostal space, MAL
Cystohepatic triangle/Triangle of Calot boundaries
Superior - Liver
Inferior - Cystic Duct
Medial - Common Hepatic Duct
Common site of an impacted gallstone
Hepatopancreatic ampulla. Pxs exhibit referred pain at the epigastric region
Where does the appendix lie?
Right Iliac Fossa
Where does the anal anal begin
Where the rectal ampulla narrows at the level of a U shaped sling formed by the PUBORECTALIS MUSCLE
Separates the anal canal into 2 segments
Dentate/Pectinate/Anorectal line
Ascending and transverse colon recieve blood from _______ and parasympathetic fibers from _______
SMA
Vagus nerve
Descending and sigmoid colons receive blood from ________ and parasympathetic fibers from __________
IMA
Pelvic splanchnic nerve from sacral nerves S2-S4
Muscle of the loin refers to
Psoas major
Nerve supply of the foregut
Parasympathetic - vagus nerve
Sympathetic - lower thoracic splanchnic nerves from T5-T9
Nerve supply of the Midgut
Parasympathetic - vagus nerve
Sympathetic - lower horacic splanchnic nerves T5-T12
Nerve supply of the hindgut
Parasympathetic - pelvic splanchnic nerves from S2-S4
Sympathetic - lower thoracic and lumbar splanchnic nerves from T11 -L2
Injury to this nerve results in weakened abduction of the thigh by gluteus medius, waddling gait, and (+) Trendelenburg sign
Superior Gluteal Nerve
Kidneys are at the level of
T12 - L3
Renal fascia covering kidney
Gerota’s Fascia
Blood supply of the ureters
Upper - renal artery
Middle - gonadal artery
Lower - superior vesical artery