The Peritoneum Flashcards

1
Q

what is the peritoneum?

A

a very thin, semi-permeable serous membrane that lines the walls of the abdominopelvic cavity and covers the abdominal organs

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2
Q

what does the peritoneum support and provide a pathway for?

A

supports viscera
pathway for blood vessels and lymph

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3
Q

what are the 2 continuous layers of the peritoneum?

A

parietal peritoneum
visceral peritoneum

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4
Q

what are both layers of the peritoneum composed of

A

simple squamous epithelium - mesothelium

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5
Q

what does the parietal peritoneum line?

A

the internal abdominopelvic wall

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6
Q

why is pain in the parietal peritoneum localised?

A

because it has the same nerve supply as the part of the abdominal cavity it lines

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7
Q

what does the visceral peritoneum cover?

A

it invaginate and covers most of the abdominal viscera

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8
Q

why is visceral peritoneum pain poorly localised?

A

it has the same autonomic nerve supply as the viscera
the pain is referred to areas of the skin (dermatomes) that are supplied by the sae same sensory ganglia and spinal cord segments as the nerve fibres innervating the viscera

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9
Q

what is the peritoneal cavity?

A

a potential space between the parietal and visceral peritoneum

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10
Q

what does the peritoneal cavity normally contain?

A

a small amount of lubricating fluid

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11
Q

what does intraperitoneal mean?

A

the visceral peritoneum covers the organ both anteriorly and posteriorly - enveloped

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12
Q

what are intraperitoneal organs?

A

stomach
spleen
liver
first and fourth parts of duodenum
jejunum
ileum
transverse colon
sigmoid colon

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13
Q

what does retroperitoneal mean?

A

there is no association with the visceral peritoneum and the parietal peritoneum only covers the anterior surface

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14
Q

what are examples of retroperitoneal organs?

A

rectum
oesophagus
ascending colon
descending colon
kidneys

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15
Q

what is mesentery?

A

a double layer of visceral peritoneum
very mobile

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16
Q

what does mesentery usually connect?

A

intraperitoneal organs and the abdominal wall

17
Q

what does mesentery provide a path for?

A

for nerves, blood vessels and lymphatics to travel from the body wall to the viscera

18
Q

an example of where mesentery is found?

A

parts of the intestines

19
Q

what is omenta?

A

sheets of visceral pleura that extend form the stomach and Proxima duodenum to other abdominal organs?

20
Q

what is the greater omentum?

A

omentum that descends from the greater curvature of the stomach and proximal duodenum and folds back up attaching to the anterior surface of the transverse colon?

21
Q

what is the lesser omentum?

A

omentum descending from the lesser curvature of the stomach and the proximal duodenum and attaches to the liver

22
Q

what are peritoneal ligaments?

A

double folds of peritoneum that either connect viscera together or connect viscera to the abdominal wall

23
Q

what is the hepatogastric ligament?

A

a portion of the lesser omentum that connects the liver to the stomach

24
Q

what is the greater sac?

A

the larger portion of the peritoneal cavity

25
Q

what further divides the greater sac?

A

mesentery and transverse colon

26
Q

what are the two compartments of the greater sac?

A

supracolic compartment
infracolic compartment

27
Q

where is the supracolic compartment and what does it contain?

A

above the transverse mesocolon
contains stomach, liver and speel

28
Q

where is the infra colic compartment and what does it contain?

A

below the transverse mesocolon
contains small intestine, ascending colon and descending colon

29
Q

where is the lesser sac?

A

lies posterior to the stomach and lesser omentum

30
Q

where does the lesser sac connect to the greater sac?

A

through the epiploic foramen

31
Q

where is the epiploic foramen?

A

posterior to the free edge of the lesser omentum - hepatoduodenal ligament

32
Q

what is arctic fluid?

A

excess fluid in the peritoneal cavity due to pathology

33
Q

what can drain ascitic fluid?

A

paracentesis

34
Q

where must the needle be placed for a paracentesis and why?

A

lateral to the rectus sheath
to avoid the inferior epigastric artery