Flashcards in Development of GI and Kidneys Deck (31):
1
What part of the gut maintains its connection to the yolk sac?
Midgut by means of the vitelline duct
2
What are the arteries supplying the foregut?
Celiac trunk:
Splenic, left gastric, common hepatic
3
What arteries supply the midgut?
Superior mesenteric:
intestinal branch, ilieocolic, right colic, middle colic
4
What arteries supply the hindgut?
Inferior mesenteric:
Left colic, sigmoid branch, superior rectal
5
What is unique about foregut vs midgut/hindgut?
The foregut has attachments to both ventral and dorsal walls the others only have dorsal
6
What is the nerve supply for the foregut?
Vagus
7
What is the nerve supply for the midgut?
Vagus
8
What is the nerve supply for the hindgut?
Pelvic splanchnics
9
What does the foregut consist of?
Stomach to the first half of duodenum
10
What does the midgut consist of?
Second half of duodenum to the 2/3 transverse colon
11
What does the hindgut consist of?
Distal third of transverse colon to rectum
12
What does the ventral mesentery of the liver become?
Falciform ligament
13
What does the lesser omentum connect?
Liver to the lesser curvature to the stomach
14
What does the left vagus innervate on the stomach?
Anterior portion
15
What does the right vagus innervate on the stomach?
Posterior portion
16
How does the pyloric and cardiac sphincter shift respectively due to the liver?
Pyloric: Right and superior
Cardiac: Left and down
17
What is the septum transversum?
Separates abdominal from plural cavity (develops into the diaphragm)
18
What is the bare area of the liver?
Contains no visceral pleura
19
What occurs with formation of the pancreas?
1.) Dorsal and Ventral buds form
2.) Ventral pancreas rotates with stomach
3.) Ventral bud is inferior after rotation
4.) Fusion of the dorsal and ventral pancreas
20
What is the pancreatic duct formed from?
Ventral and dorsal (main) fusion (may have accessory pancreatic duct)
21
How does the embryo communicate with the yolk sac?
Via the yolk stalk
22
How do the intestines rotate?
90 degrees clockwise outside body and 180 degrees once back inside the body
23
How does the cecum move in development?
Descends from the right upper quadrant to the right lower
24
What is it called when the intestines stay outside the body?
Umbilical omphalocele
25
What are the three kidneys in development?
Pronephros
Mesonephros
Metanephros
26
What is the pronephros?
First kidneys that are non functioning and degenerate
27
What are the mesonephros?
Second kidneys functioning; degenerate
28
What are the metanephros?
Final kidneys in adults
29
What does the mesonephric duct become?
A part of the testis
30
Where does the collecting duct come from?
Metanephric mesenchyme
31