Retroperitoneal Organs of PAW Flashcards

1
Q

The retroperitoneum

A
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2
Q

Contents of the Retroperitoneum abbreviation

A

PEAR DUCKS

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3
Q

Contents of the Retroperitoneum: PEAR DUCKS:

A
  • Pancreas
  • Oesophagus
  • Aorta & IVC
  • Rectum
  • Duodenum
  • Ureter
  • Colon
  • Kidneys
  • Suprarenal glands
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4
Q

Contents of the Retroperitoneum

A
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5
Q

The kidneys lie in the

A

Paravertebral gutter formed by the angle (renal angle) between erector spinal and the quadratic lumborum muscles (psoasmuscles too)

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6
Q

Which parts of the large intestine are NOT retroperitoneal?

A
  • transverse colon is intraperitoneal
  • sigmoid colon is intraperitoneal
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7
Q

Kidney basics structure

A
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8
Q

Order of structures at the Hilum of kidney anterior to posterior

A

Renal vein, renal artery, ureter

VAU

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9
Q

Kidney function abbreviation

A

A WET BED

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10
Q

Kidney function: A WET BED:

A

I

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11
Q

Kidney structure

A

Renal pyramids ending in papilla, where collecting ducts of nephrons emerge
Minor Calyces (8-10) joint to form major calyces (4-6)
Renal sinus contains fat

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12
Q

Transpyloric plane

A

Through the lower order of L1 vertebra Posteriorly and across 9th CC anteriorly

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13
Q

Calyx is

A

Collecting duct

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14
Q

A kidney will typically have how many major calyces?

A

4-6

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15
Q

Renal columns are

A

Extensions of cortex between medulla

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16
Q

Which kidneys lies lower and why?

A

Right lies lower than left due to the presence of the liver

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17
Q

Anterior Relationships of the Right Kidney:
Anterior:
Medial:
Superior:
Posterior:

A
  • anterior: hepatic flexure of colon, liver
  • medial aspect of kidney: 2nd duodenum
  • superior: adrenal gland
  • posterior: diaphragm, adrenal gland???
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18
Q

What is the problem with using the umbilicus as a surface marking?

A

Not in a fixed position
Variable

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19
Q

Anterior Relationships of Left Kidney:

A

Anterior: splenic flexure of Large bowel
Pancreas tail over upper pole and Hilum
Left suprarenal gland lies on top
Spleen is anterior and superior

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20
Q

Kidneys posterior relationships

A
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21
Q

Posterior Relationships of the Left Kidney:

A

Left kidney sits on top of iliohypogastric nerve and ilioinguinal nerve
Psoas muscle lies on top of left kidney
Quadratus Lumborum lies on top of Psoas

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22
Q

Kidneys anterior relationships

A
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23
Q

Kidneys posterior relationships

A

Insert diagram

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24
Q

Upper pole and lower pole of kidney to midline distance

A

Upper Pole: 5cm
Lower Pole: 15cm

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25
Q

Kidney: Fascia and Coverings:

A
  • renal fascia envelops kidney and adrenal gland
  • perinephric fat is loose fatty i tissue inside renal fascia
  • paranephric fat is OUTSIDE gerotas fascia
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26
Q

If a surgeon approaches a kidney Posteriorly, what must be cut through T to reach blood vessels?

A

Renal fascia (Gerota’s fascia) and perinephric fat

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27
Q

The left renal vein is located under which artery?

A

The superior mesenteric artery

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28
Q

Aorta anteriorly 3 branches are

A

Coeliac trunk
Superior mesenteric artery
Inferior mesenteric artery

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29
Q

Renal arteries arise from

A

The lateral border of the aorta

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30
Q

In 70% of people there are three or more renal arteries.

True or False?

A

False
30%

31
Q
A
32
Q

Kidney blood supply

A
33
Q

Segmental arteries

A

Open down brodel line to avoid damage to major arteries

34
Q

Segmental arteries anastomose.

True or False?

A

False
Segmental arteries are end arteries
Run risk of scarring of tissue supplied by a blocked segmental artery

35
Q

Which renal vein is shorter?

A

IVC more to the right of midline
Right renal vein is shorter

36
Q

gonadal veins on the right side drain directly into IVC and left side drain into renal vein.

True or False?

A

True

37
Q

Adrenal vein on right drains directly into the IVC and on the left drains into the left renal vein.

True or False?

A

True

38
Q

Why is it easier to transplant a left kidney than a right?

A

Renal vein on left is longer and easier to anastomose

39
Q

Lumbar veins on the left may drain into the renal vein. Implication on surgery?

A

On both sides if cutting renal vein may cut into a lumbar vein which drains directly into IVC.

40
Q

Venous drainage of the bowels is

A

Into separate Azygous system of veins

41
Q

Kidney venous drainage

A
42
Q

Retroperitoneal nerve supply: ——— plexus (4):

A

Preverterbral plexus:
- coeliac plexus
- aortic plexus
- superior hypogastric plexus
- inferior hypogastric plexus

43
Q

Prevertebral plxus provide preganglionic and visceral afferents:

  • sympathetic:
  • parasympathetic:
  • preganglionic parasympathetic fibres
A
  • sympathetic: thoracic and lumbar splanchnic nerves
  • parasympathetic: Vagus CNX
  • parasympathetic: pelvic splanchnic nerves
44
Q

Retroperitoneal nerve supply

A
45
Q

Nerve supply retroperiotneal

A
46
Q

Renal and ureteric pain

A

Insert slide

47
Q

Pain afferents from all abdominal viscera pass

A

Retrogradely back to the spinal cord through thoracic and lumbar splanchnic nerves T5-L2

48
Q

Pain afferents from pelvic viscera follow

A

Pelvic splanchnic parasympathetic nerves S2-4 into the cord and largely confined to the pelvic regions

49
Q

Lymphatics of kidneys

A
50
Q

Lymphatics of Retroperitoneum:

A

Internal iliac nodes drain pelvis. External iliac nodes drain legs. Pre-aortic chain formed on top of aorta, para-aortic nodes on the side, all join to form cisterna chyli which drain into the thoracic duct

51
Q

Applied anatomy of kidneys

A
52
Q

Difference in shape between right and left adrenal glands?

A
  • right is pyramidal
  • left is semi-lunar
53
Q

Right renal grand location

A

On top of upper pole of right kidney tucked away behind IVC

54
Q

Left renal gland location

A
  • larger, crescent shaped, sits medial to the upper pole
55
Q

Blood supply to renal glands

A
  • superior branch of suprarenal arteries (branch of infraphrenic)
  • middle suprarenal artery (branch of aorta or renal artery)
  • inferior suprarenal artery is a branch of renal artery
56
Q

Veins of renal glands

A
  • one vein per each
  • right directly to IVC, left into left renal vein
57
Q

Adrenal glands: Position and blood supply:

A
58
Q

Suprarenal Gland internal structure and function:

A
  • Cortex:
    • corticosteroids (cortisol, aldosterone)
      - adrenal androgens (sex hormones)
  • Medulla:
    - adrenaline
59
Q

Nerve supply of suprarenal glands

A

Sympathetic Innervation: T8-L1
(Greater, lesser,least splanchnic)

60
Q

Nephron structure

A
61
Q

Renal cortex and Medulla

A
62
Q

Ureteric anatomy

A
63
Q

Ureteric blood supply

A

Proximal ureter = renal artery
Bottom part of ureter: internal iliac branches

64
Q

Which parts of ureter have good blood supply?

A

Pelvic ureter has good blood supply, as has proximal ureter but mid ureter blood supply is relatively poor

65
Q

Bladder anatomy

A
66
Q

Key features of bladder anatomy:

A
  • urinary bladder is highly distensible
  • deter us or muscle forms the bulk of bladder wall
  • body base apex neck trigone
  • lining transition cell epithelium
67
Q

Urethra

A
68
Q

Innervation of lower urinary tract

A
69
Q

Innervation of lower urinary tract

A
70
Q

Innervation of lower urinary tract

A

Insert table

71
Q

Sites of ureteric obstruction

A
72
Q

Narrow points of ureter (3):

A
  • exit out of kidney at PUJ
  • crossing sacral iliac joints
  • enters muscle wall of bladder
73
Q

Exctraperitoneal bladder injuries are not as severe as intraperitoneal because

A

Intraperitoneal urine will fill pelvic cavity
Extraperitoneal fat

74
Q

Trigone of bladder

A

Ureter orifices where ureters pass into the bladder Posteriorly

Smoother area behind orifices because comes from mesenteric duct embyologically

Activation of nerve endings in trigone results in need to urinate