Lecture 2- Peritoneal cavity

Question 1

abdominal and pelic cavity are

Answer 1

The abdominal cavity and the pelvic cavity are continuous with one another- no barrier

Although the diaphragm is a divide- the oesophagus and vena cava and aorta pass through the thoracic cavity to the abdominal cavity

Question 2

peritoneal cavity is made up of layers of

Answer 2

mesothelium- secretes serous fluid

Question 3

mesothelium

Answer 3

• flatteend simple squamous
• basement membrane
• dense irrecular connective tissue

Question 4

mesothelium produces

Answer 4

lubricating fluid

Question 6

the peritoneal cavity lies within the

Answer 6

throacic cavity and envelops some viscera (organs)

Question 8

intraperitoneal organs

Answer 8

liver, stomach and small intestine

(completely surrounded)

• Intraperitoneal structures are not actually inside the perirenal cavity- they are enveloped (like a balloon)

Question 9

viscera not enveloped and lie posterior to the peritoneal cavity

Answer 9

retroperitoneal viscere

Question 10

visceral layer

Answer 10

continuous with viscera

Question 11

parietal viscera

Answer 11

outside layer

Question 12

what is a mesentry

Answer 12

double fold of peritoneum that attaches certain viscera to the posteiror abodminal wall

• jejunum
• ileum
• appendix
• transverse colon
• sigmoid colon
• rectum

Question 13

mesentries allow

Answer 13

• allows blood vessels and lymphatics to go from the retroperitoneal organs to the intraperitoneal without breeching the integrity of the cavity

Question 14

peritoneal ligament

Answer 14

Double folded peritoneum connects viscera- membrane channel between the liver and the stomach (not a mesentery

Question 15

Role of the peritoneal cavity

*

Answer 15

• Aids structure by holding the viscera in position- stops twisting
• Serous fluid reduces friction

Question 16

Stomach ‘mesentery’ doesn’t class as a

Answer 16

mesentery! Not long enough- stomach cant move very much