GI Anatomy Lab Cheat Sheet Flashcards
What is the median umbilical fold a remnant of?
Urachus
What is the medial umbilical fold a remnant of?
Umbilical A.
Lateral umbilical folds contain what artery?
Inferior Epigastric A.
What is the Supravesical fossa?
The space between the median umbilical fold and the medial umbilical fold
What is the medial umbilical fossa?
Space between the median umbilical fold and the lateral umbilical fold
What is lateral umbilical fossa?
Space lateral to the lateral umbilical fold
What is the vitelline duct and what congenital condition is it associated with?
Embryonic structure, connects the yolk sac to the midgut
Associated with the Meckel’s diverticulum (diverticulum of the ileum containing ectopic tissue of the stomach and pancreas (Rule of 2s)
What artery does the Inferior Epigastric Artery branch off of?
Inferior Epigastric A. comes from the External Iliac A.
What artery does the Superior Epigastric A. branch off of and what other branches off as well?
Superior Epigastric A. branches off of the Internal Thoracic A. along with the Musculophrenic A.
What Provides Parasympathetic innervation to structures below Splenic Flexure?
Pelvic Splanchnic N.
WHat provides parasympathetic innervation to structures Above the Splenic Flexure?
Vagus N.
What tissue is the cremaster muscle derived from and what nerve innercates it?
Cremaster muscle comes from Internal Oblique M./Aponeurosis
It is innervated by the Genital Branch of the Genitofemoral N.
What two arteries form an anastemosis, where one is from the Celiac Trunk, and the other is from the Superior Mesenteric A.?
Superior Pancreaticoduodenal Arteries (from Celiac Trunk) anastemose with Inferior Pacreaticoduodenal Arteries (from Superior Mesenteric A.)
What two arteries from an anastemosis, where one is from the Superior Mesenteric A. and the other is from the Inferior Mesenteric A.?
Left Colic A. (from the Inferior Mesenteric A.) anastemoses with Right Colic A. (from the Superior Mesenteric A.)
What happens in Hypertrophic Pyloric Stenosis?
Pyloric sphincter grows larger
What is the Round ligament of the Liver a remnant of, and what is another name for it?
Round Ligament of the Liver is a remnant of the Left Umbilical V.
Round ligament is also known as Ligamentum Teres Hepatitis
What is the Ligamentum Venosum a remnant of and where is it located?
Ligamentum Venosum is a remnant of the Ductus Venosus
It is located on the inferior side of the liver and is connected to the round ligament of the liver
Where does the greater splanchnic nerve form its synapse?
Celiac Ganglion
What is the most likely site of a ureter obstruction?
At the Pelvic Brim (the rim of inside ring formed by the two sides of the pelvis
What travels through the Caval Opening and what vertebral segment plane is it located?
The Inferior Vena Cava and the Right Phrenic N.
It is located at T8
What passes through the aortic hiatus and what vertebral segment plane is it located?
Aorta, Azygous V., Thoracic Duct
It is located at T12
What passes through the Esophageal Hiatus and what vertberal segment plane is it located?
Esophagus and the Vagus N.
It is located at T10
What arteries are formed from the abdominal aorta bifurcating, and at what vertebral segment plane does it do so?
Left and Right Common Iliac Arteries
Bifurcates at L4
What two nerves are formed from the Bifurcation of the Anterior Rami of L1?
Iliohypogastric N. and Ilioinguinal N.
What do you call the white portion of the diaphragm and what embryonic structure is it formed from?
Central Tendon of the Diaphragm
It is formed from the SEPTUM TRANSVERSUM
What two tissue layers form the Conjoint Tendon?
Transversus Abdominus M. and the Internal Oblique Aponeurosis
What tissue is the Tunica Vaginalis formed from?
Peritoneum
What tissue is the external spermatic fascia formed from?
External Oblique M.
What tissue is the internal spermatic fascia formed from?
Transversalis Fascia
What tissue is the Superficial Inguinal Ring formed from?
External Oblique Aponeurosis
What is the scrotal ligament a remnant of?
Gubernaculum
What does the gubernaculum become in females?
The round ligament of the uterus
What is the Falciform Ligament a remnant of?
The Ventral mesentery
What structures are found within the Splenorenal Ligament?
The Splenic vessels and the tail of the pancreas
What structures make up the Portal Triad and in what ligament are they contained?
Hepatic Portal Vein, Proper Hepatic Artery, and the Common Bile Duct***
They are found in the Hepatoduodenal Ligament
What vessel(s) are found in the Gastrosplenic Ligament?
Short Gastric Arteries and the Left Gastro-omental Artery
What vessel(s) are found in the Gastrocolic Ligament?
Right Gastro-omental Artery
What vessel(s) are found in the Gastrohepatic Ligament?
Right Gastric A. and Left Gastric A.
What is the most inferior space in the female abdomen?
Rectouterine Pouch
What is the most inferior space in the male abdomen?
Rectovesicular Pouch
What portion of the esophagus contains skeletal muscle and what is its embryonic origin?
The upper 1/3 of the esophagus
Formed from Pharyngeal Arches 4/6
