L31: Anatomy of the Peritoneum and Peritoneal Cavity Flashcards Preview

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Flashcards in L31: Anatomy of the Peritoneum and Peritoneal Cavity Deck (23)
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1

What is a peritoneum?

A single of layer of flattened mesothelial cells supported by fibroelastic tissue. Fat is often stored adjacent to the peritoneum

2

What is a peritoneal cavity?

Contains only a small amount of serous fluid. Abdominal organs are excluded from the space by their peritoneal covering

3

What is the intraperitoneal?

Organs that are suspended from the abdominal roof within the peritoneal reflections

4

What is retroperitoneal?

Organs that are directly joined to the abdominal wall

5

What is parietal peritoneum?

Lines the walls

6

What is visceral peritoneum?

Directly contacts (enshrouding) the organs

7

In the Intraembryonic coelom, around what stage and week would the development of the peritoneal viscera be at?

Stage 11/ Week 4 or so

8

Early abdominal cavity lined with peritoneum is derived from __?

Visceral lateral plate mesoderm

9

What does the neural tube form much of?

GI Tract

10

Organs develop and invaginate into ____ pulling a neurovascular supply with them.

Peritoneum

11

What are two examples of coelomic invagination?

1. Lungs
2. Heart

12

What is a mesentery?

Double layer of peritoneum that forms as a result of the invagination of the peritoneum by an organ; vessels and nerves pass in the mesentery to supply the large and small intestines

13

What does the mesentery attach to? By what?

Abdominal wall by a short peritoneal attachment known as the root of the mesentery.

14

Developing ____ 'drags' vasculature, nerve supply, and lymphatics into the newly formed mesentery.

Intestine

15

What does the root of mesentery anchor?

Anchors the Great mesentery to the dorsal abdominal wall

16

What is mesocolons?

Ascending,transverse, and descending mesocolons connect the ascending, transverse, and descending colons to the dorsal body wal

17

What is mesoduodenum? Where does it originate at?

Double layer of peritoneum that forms as a result of the invagination of the peritoneum by an organ. Originates at the dorsal abdominal wall and the root of the mesentery and extends to the duodenum

18

What is omentum? What is an extension of?

The connecting peritoneum that attaches the stomach to the body wall or other organs- ti is an extended mesogastrium

19

What is the greater omentum? What does it attach to?

An extended fold of dorsal mesogastrium, attaches the greater curvature of the stomach to the dorsal wall at pancreas

20

What is the lesser omentum?

A part of the ventral mesogastrium
- Loosely spans the distance from the lesser curvature of the stomach to the porta of liver

21

What does the hepatoduodenal ligament attach to and what does it contain (3 things)?

Attaches liver to the duodenum
- Contains the portal vein, hepatic artery, and bile duct

22

What are the omental bursae (greater and lesser sacs)?

Fundamental division in the peritoneal cavity; both sacs are continuous but the communication between the two is restricted to the epiploic foramen

23

What is the excess of fluid in the abdomen called?

Ascites