Embrology Body Cavities

Front 1

Which layers surround the intraembryonic cavity?

Back 1

Somatic and Splanchnic Mesoderm

Front 2

What gives rise to the visceral layer of serous membrane?

Back 2

Splanchnic Mesoderm

Front 3

What gives rise to the parietal layer of the serous membrane?

Back 3

Somatic Mesoderm

Front 4

The visceral and pariteal layers of serous membrane are continuous in three places:

Back 4

Heart (around origin of great vessels)
Lung (around root of the lung)
Gut (dorsal mesentery)

Front 5

Ventral Mesentery is derived from:

Back 5

Mesoderm of the septum transversum

Front 6

Dorsal mesentery extends from where to where?

Back 6

From the caudal part of esophagus to the end of the hindgut

Front 7

Ventral Mesentery Extends from where to where?

Back 7

Caudal aspect of the Esophagus to the upper portion of the duodenum.

Front 8

Plate of mesodermal tissue between the thoracic cavity and stalk of the yolk sac

Back 8

Septum Transversum

Front 9

Two spaces on either side of the foregut created by the expansion of septum transversum:

Back 9

Pericardioperitoneal Canal

Front 10

Ventral and lateral expansion of the lungs is posterior to what?

Back 10

Pleuropericardial Folds

Front 11

What structures become fibrous pericardium in the adult?

Back 11

Pleuropericardial membranes

Front 12

What do the pleuropericardial membranes fuse with?

Back 12

They fuse with each other and the root of the lungs

Front 13

What extends medially and ventrally from the dorsal body wall to close the pericardioperiotoneal canal?

Back 13

Pleuroperitoneal folds

Front 14

What two things do the pleuroperitoneal folds fuse with?

Back 14

The mesentery of the esophagus and septum transversum.

Front 15

What forms the muscular part of the diaphragm?

Back 15

Myoblasts from the body wall penetrate the membranes.

Front 16

What becomes the central tendon of the diaphragm?

Back 16

Septum Transversum

Front 17

What forms the crua of the diaphragm?

Back 17

Mesentery of the esophagus

Front 18

Most of the periphery of the diaphragm is from:

Back 18

The mesenchyme of the thoracic wall

Front 19

3 types of intraembryonic mesoderm:

Back 19

Paraxial, intermediate, and Lateral Plate

Front 20

Intercellular clefts appear where?

Back 20

Lateral Plate Mesoderm

Front 21

Communicating conduit between the yolk sac and the gut

Back 21

Omphaloenteric Duct

Front 22

Lung buds grow in which direction?

Back 22

Caudolaterally

Front 23

Mesoderm of the body wall gives rise to (2 things)

Back 23

Definitive wall of the thorax and pleuropericardial membranes

Front 24

Septum Transversum Migration

Back 24

4th week- cervical
6th week-Thoracic
3rd motnth- L 1

Front 25

Septum Transversum comes from

Back 25

Mesoderm

Front 26

Central Tendon of the Diaphragm comes from:

Back 26

Septum Transversum

Front 27

Small central portion of the diaphragm comes from:

Back 27

pleuroperiotoneal membranes

Front 28

Crua of the diaphragm comes from

Back 28

Esophagus mesentery myoblasts

Front 29

Muscular portion of the diaphragm comes from:

Back 29

Body wall myoblasts