Formation Of Body Cavitites Flashcards
What are the three phases of CP embryonic development and what happens in each
- Growth - cells growing
- Morphogenesis - building tissue which is controlled by gene expression
- Differentiation - cells turn on specific gene product
When does the folding of the embryo take place
Wk. 4
What are the two planes which fold during wk. 4
Median plane
Horizontal plane
What forms the foregut and hindgut
Endoderm
The head and the tail push the heart and the cloacal membrane how respectively
Ventrally
What does somatic mesoderm of lateral plate mesoderm form
The somatopleure
What does splanchnic mesoderm of the lateral plate mesoderm form
Forms around the organs and the dorsal mesentery
Once horizontal folding is complete, what happens in regards to intra and extra coelem
They do not communicate anymore
The splanchnic mesoderm of lateral plate mesoderm gives rise to what
Anything visceral
The somatic mesoderm of lateral plate mesoderm gives rise to what
Anything parietal
What does the pericardioperitoneal canal separate
Separates the pericardial cavity from the pleural cavity/peritoneal cavity
What does the pleuropericardial folds come from
The somatic layer of the lateral plate mesoderm
How does the phrenic N. Reach the pericardial cavity
The septum transversum and the pleuropericardial canal meet and allow passage of the N.
Where do the lungs develop
In a space between the pleuropericadial membrane and the pleuroperitoneal membrane
The pharynx is formed from what
Foregut endoderm
