Development of Body Cavities and Lungs

Question 1

What cavities are found in the thoracic cavity and what is found there?

Answer 1

The pericardcal cavity- where the heart is
The pleural cavity- where the lungs are
The Superior part of the diagrapham

Question 2

whats found in Abdominal cavity?

Answer 2

Inferior diagrapham

Peritoneal cavity- abdominal organs surrounded by a serous membrane.

Question 3

what does the oropharangeal membrane become?

Answer 3

The oropharangeal membrane goes on to become the mouth.

Question 4

what type of folding occurs at the embryo?

Answer 4

The embryo under goes ventral folding from day 21.

Question 5

what does the septum transverse develop into?

Answer 5

the septum transverse develops into the diaphragm.

Question 6

what does the septum transverse do?

Answer 6

the septum transverese separtes the pericardial cavity and the peritoneal cavity.

Question 7

what does the cloacal membrane develop into?

Answer 7

the cloacal membrane goes onto develop into the anus.

Question 8

what type of gut cavities are present in the embryo?

Answer 8

The Foregut
The Midgut
The Hind gut

Question 9

How does the foregut go on to form the mouth?

Answer 9

The foregut is lined with endoderm cells that communicate with the mouth.

Question 10

How does the hind gut form the anus?

Answer 10

The bottom end of the hind gut is surrounded by endoderm cells which comunicate with the cloacal membrane and forms your anus.

Question 11

How will the pericardial cavities and ther peritoneal cavities communicate after the formation of the septum transverse.

Answer 11

The pericardial and peritoneal cavities communicate via the pericardioperitoneal canals.

Question 12

How do the lugs form in the embryo?

Answer 12

theres an evagination of lung buds from the ventral wall.

first theres the left and right bronchi, then theres secondary bronchial buds, then theres tertiary bronchial buds.

Question 13

How do the pericardiaperitoneal canals close?

Answer 13

the pleuropericardial folds which contain the phrenic nerve and left common cardinal vein move in medially from lateral sides and close the canals.

Question 14

what are the pleura membranes?

Answer 14

the visceral pleura which surrounds the lung and the parietal pleura.

Question 15

whats the intial level of the septum transverse?

Answer 15

the septum transverse had an initial level of the 3rd- 5th cervical somites.

Question 16

what occurs when the pericardioperitoneal canals fail to close?

Answer 16

This leads to Congenital Diaphramatic Herniation.