Anatomy of the gut tube Flashcards
The perimodial gut tube develops during which week?
4th week
Embryologically, from which lining the perimodial gut tube is developed?
From the endoderm
The perimodial gut tube is devided into three?
1-Foregut
2-Midgut
3-Hindgut
What are the forgut structures?
1-Pharynx
2-Lower respirtory system
3-Esophagus
4-Stomach
5-Duodeunum-proximal to the opening of the bile duct
6-Liver
7-biliary apparatus( hepatic ducts, gallbladder, and bile duct and Pancreas)
Which artery and vein suppy and driane the foregut?
The Celiac trunk and its branchs. And the Celiac Vein
Which lymphatic drainage for the foregut?
celiac group of lymph nodes
foregut pain is located in…/
upper part of abdemon pain
midgut pain is located in..?
middle part of the abdemon
hindgut pain is located in ….?
lower part of the abdemon
What the three constrictions of the Esophagus?
1- Cervical (pharyngo-esophageal) constriction.
2-Thoracic (broncho-aortic) constriction.
3-Diaphragmatic constriction. It passes through the oesophageal hiatus of the daiphragm.

Wha are the parts of the stomach?
- Cardia
- fundus
- body
- pyloric part
What are the curvatures othe Stomach?
Lesser and Greater carvatures
What is the function of the pyloric sphincter?
Control discharge of stomach contents into the duodenum
some defect/ pathology of the pyloric sphincter?
- Children are born with congenital pyloric stenosis
- Pyloric stenosis caused by ulcers.
What are the structures that form the stomach bed?
- Diaphragm
- Spleen
- Splenic artery
- pancreas
- transverse mesocolon and colon
Where does the lesser sac or ommental bursae is found? and what will happen if there is infection of the stomach bed structures?
behind the stomach.
you get collection in the lasser sac or ommental bursae.
Biliary ducts carry bile from what organ to what
Liver to gallbladder
Where Bile is produced?
Bile is produced in the liver and stored and concentrated in the gall bladder
How many ml of bile can the Gallbladder store?
50ml
Which artery supply the Gallbladder? and why is it important?
the cystic artery—> which is a branch of the right hepatic artery. Important during surgical removal of the Gallbladder.
Which triangle the cystic artery lies?
Cystic artery lies in the Triangle of calot (Triangle between common hepatic duct, cystic duct and visceral surface of liver)
true of false: the pancreas is both exocrine and endocrine gland?
true
Retroperitoneal organs?
SAD-PUCKER
Accessory organs of GI tract?
- Liver
- Gallbladder
- Pancreas
Which plane does the pancreas lies on, and vertebral levels?
Lies along the transpyloric plane(L1/L2)
Mention the parts of the pancreas?
- Head
- neck
- body
- and tail
important to remember
where does the portal vein is formed?
•Portal vein is formed behind the neck of the pancreas
What are the arteries that branches of the abdominal aorta and supply the GI?
- Celiac trunk- T12
- superior mesenteric artery -L1
- inferior mesenteric artery - L3
What are the main branches of the Celiac trunk?
1) Left gastric artery – runs along the lesser curvature of the stomach
2) Hepatic artery – supply liver and gallbladder
3) Splenic artery – Runs retroperitoneally along the superior (upper) margin of the pancreas

What are the structures of the midgut?
- distal duodenum
- jejunum
- Cecum
- appendix
- ascending colon
- the right two third of the transverse colon

What is Duodenal Ulcer?
Duodenal Ulcer - inflammatory erosions of the duodenal wall (mostly 1st part)
What is the difference between jejunum and ileum in the living body?

Blood supply to the midgut? Origin, relations, main branches and other branches?
Superior mesenteric artery
Origin: Branch of abdominal aorta (L1)
Relations: Crossed anteriorly by Splenic vein and neck of pancreas
Main branches: Jejunal and ileal arteries
Other branches: Middle colic, right colic and iliocoloic

What are the Hindgut Structures?
- Left one-third of transverse colon
- descending colon, sigmoid colon
- rectum
- and upper part of anal canal
- Epithelium of the urinary bladder and most of the urethra

Blood supply to the hindgut?
Inferior Mesenteric artery – Artery of hindgut