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Flashcards in Exam One Deck (202)
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1

According to Craiggers, what two muscles form the upper espohageal sphincter?

Cricopharyngeal

thyropharyngeal

2

What landmark represents the point where lymph flow would be directed upward or downward?

tracheal bifurcation

3

What layers of the GI tract make up the Plicae Circularis?

mucosal and submucosal

4

A pseudodiverticula effects which two layers of the GI tract?

mucosa and submucosa

5

What hepatic lobule is most susceptible to drug mediated damage?

zone three

6

During what week of embryological development does the gut form?

4th week

7

What is the stomodeum? What embryological layer is the stomodeum derived from?

primitive mouth

ectoderm

8

What is the proctodeum? What embryological layer is the proctodeum derived from?

anal pit

ectoderm

9

Which embryological layer is most of the GI tract derived from?

mesoderm

10

During what week does the tracheoesophageal septum form?

4th week

11

During what week does re-canalization of the tracheoesophageal tube take place?

8th week

12

What border of the stomach grows faster? What does this become?

dorsal

greater curvature

13

What does the ventral border of the stomach become?

lesser curvature

14

Does the stomach rotate clockwise or counter clockwise? Along what axis? How many degrees?

clock wise

longitudinal

90

15

What week does the duodenum develop?

4th

16

During what week does recanalization of the lumen of the duodenum take place?

8th

17

During what week does the midgut herniate through the umbilicus?

6th week

18

How many degrees does the midgut rotate? In what direction?

90 degrees

counter-clockwise

19

During what week does the midgut return to the abdomen?

10th

20

Once the midgut return, how many more degrees will it rotate? What direction?

180 degrees

counter clockwise

21

During what week of embryological development does the appendix form?

6th

22

When does the hepatic system form?

4th week

23

During what week does hepatic hematopoiesis begin?

6th week

24

During what week does bile formation begin?

12th week

25

What is Alagille Syndrome?

decreased number of bile ducts within portal system

26

What is larger, dorsal or ventral pancreatic bud?

dorsal

27

Is most of the pancreas derived from the dorsal or ventral pancreatic bud?

dorsal

28

What is pancreatic divisum?

a dorsal and ventral pancreatic duct

29

Is α-amylase an endosaccharidase or an exosaccharidase?

endosaccharidase

30

Which pancreatic enzyme is an exopeptidase?

carboxypeptidase