Development of the Body Cavities and Mesenteries Flashcards Preview

Embryology > Development of the Body Cavities and Mesenteries > Flashcards

Flashcards in Development of the Body Cavities and Mesenteries Deck (29):
1

the intermediate mesoderm helps form the

urinary system

2

the lateral plate mesoderm helps form the

abdomen

3

paraxial mesoderm helps form

somites

4

What are the two parts of the lateral plate mesoderm

somatic mesoderm and splanchnic mesoderm

5

the somatic mesoderm helps gives rise to

parietal layer (GSA)

6

the splanchnic mesoderm helps give rise to

viscera layer (GVA)

7

intraembryonic coelom

is the early start of the body cavity; the space between the somatic mesoderm and the splanchnic mesoderm

8

pleuropericardial folds are covered on both sides with somatic mesoderm and gives rise to

somatic layer of the serous pericardium
fibrous pericardium
mediastinal pleura

9

the septum transversum helps give rise to

central tendon

10

the pleuroperitoneal membranes help give rise to

outgrowth of the body wall contact the septum transversum

11

paraxial mesoderm helps give rise to

muscular portion of diaphragm

12

dorsal mesentery helps give rise to

right and left crura

13

diaphgragmatic hernias

results from failure of pleuroperitoneal membrane to close the pericardioperitoneal canal

14

esophageal hernias

do to defect in the right crus and or short esophagus (dorsal mesentery); the upper part of the stomach is retained in the thorax and the stomach is restricted at the level of the diaphragm

15

parasternal hernia

results from a deficit between the sternal and costal heads of the diaphragm; may go undetected until the child is several years old (deficity in paraxial mesoderm)

16

forgut

celiac artery

17

mid gut

superior mesenteric artery

18

hindgut

inferior mesenteric artery

19

formation of the spleen

derives from mesenchymal cells

20

derivatives of ventral mesenteries

lesser omentum
hepatogastric
hepatoduodenal
falciform ligament
coronary ligament
right and left triangular ligaments

21

derivatives of dorsal mesentery

mesoesophagus,, mesogastrium (gastro splenic, phrenic and colic) phrenicolienal, prenicocolic, mesentery proper, mesoappendix, transverse mesocolon, and sigmoid colon

22

peritoneal cavity

sac lined by a thick layer to tissue called peritoneum, serous fluid normally in the cavity

23

peritoneal

covered on all sides with peritoneum has a mesentery

24

retroperitoneal

organs not covered on all sides by peritoneum

25

primary peritoneal

never had a mesentery

26

secondary retroperitoneal

had a mesentery but became retroperitoneal

27

peritoneal organs

stomach, spleen, 1,4 dudoenum, jejunum, ilieum transverse and sigmoid colon

28

primary retroperitoneal organs

kidneys, ureters, bladder, aorta, and IVC

29

secondary retroperitoneal organs

parts 2 and 3 of duodenum, ascending colon, descending colon, rectum pancreas, gall bladder and the liver