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GI Exam 1 > Development of GI and Kidneys > Flashcards

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

What comes from the uretic bud?

Pelvis
Major and minor calyx