Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

GI > Blood supply to midgut and hindgut (+ a bit of liver) > Flashcards

Blood supply to midgut and hindgut (+ a bit of liver) Flashcards

1
Q

Blood supply to midgut

A

Superior mesenteric artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Blood supply to hindgut

A

Inferior mesenteric artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Where do both these vessels originate?

A

Abdominal aorta

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What level does superior mesenteric artery branch off?

A

L1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What level does inferior mesenteric artery branch off?

A

Around L3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Branches of superior mesenteric artery

A

Ileocolic artery –> caecum

Right colic artery –> ascending colon

Middle colic artery –> first 2/3 transverse colon

Branches to ileum and jejunum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Branches of inferior mesenteric artery

A

Left colic artery –> descending colon

Sigmoidal artery –> sigmoid colon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Change of name of inferior mesenteric

A

As it passes into pelvis it is renamed superior rectal artery - supplying superior rectum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is formed by the anastomoses of all the arteries supplying the mid and hindgut?

A

Marginal artery - surrounds inner large bowel like a margin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Where do the inferior and superior mesenteric artery anastomose?

A

Left colic artery anastomoses with middle colic artery at splenic flexure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Watershed area in mid/hindgut

A

From margin of midgut to hindgut at transverse colon onwards there is area with worst blood supply - ischaemia can occur if BP drops

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Look on notability at the diagram you drew ella it will make sense

A

Plz look

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Venous drainage of midgut

A

Superior mesenteric vein

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Venous drainage of hindgut

A

Inferior mesenteric vein

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Rectum drainage

A

Upper 1/3 superior rectal vein
Middle and lower 1/3 –> systemic venous system (middle rectal vein and inferior rectal veins —> internal iliacs)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

LI vs SI

A

LI - shorter and wider
LI - crypts but NO villi

17
Q

How is water reabsorbed in LI?

A

Facilitated by ENaC channels
Induced by aldosterone
Very tight junctions - allows gradient to form and less ions to leak out

18
Q

Epithelia in large intestine

A

Columnar

19
Q

Retroperitoneal parts of LI

A

Ascending and descending = retroperitoneal

Transverse = not and has its own mesentery (like sigmoid colon does)

20
Q

Ligaments of the liver

A

Falciform ligament
Coronary ligament (anterior and posterior folds)
R and L triangular ligament
Lesser omentum

21
Q

Falciform ligament function

A

Connects the anterior liver to the anterior abdominal wall
Sickle shaped
Remenant of ligamentum teres (umbilical vein) which was ventral mesentery

22
Q

Coronary folds (anterior and posterior) function

A

Attaches superior liver to inferior diaphragm
Borders mark the bare surface of the liver

23
Q

Triangular ligaments left and right formed from

A

Anterior and posterior coronary folds come together each side at left and right lobe to form these

24
Q

What do the triangular ligaments connect to?

A

Right - connects right lobe to diaphragm

Left - connects left lobe to diaphragm

25
Q

Lesser omentum - what does it connect

A

Connects liver to lesser curve of the stomach and 1st part of duodenum

26
Q

How else is the liver secured?

A

Hepatic veins connect to inferior vena cava

27
Q

3 hepatic recesses

A

Subphrenic recess
Subhepatic recess
Morisons recess

28
Q

Subphrenic recess - what is it?

A

Between diaphragm and anterior/superior parts of the liver

Seperated into R and L by falciform ligament

29
Q

Subhepatic space - what is it

A

Part of supracolic compartment - space between transverse colon and inferior liver

30
Q

Morisons pouch - what is it?

A

Potential space between the visceral surface of the liver and the R kidney

Deepest part of peritoneal cavity when supine (lay on back), pathology fluids (blood or ascites) can accumulate here in bedridden pts

GI (32 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions