Serous cave
As serous cavities is called gap spaces within the body of the tunica serosa lined and are mutually displaceable. The point is that there is a certain mobility and displacement for the intestines . They consist of two parts: an inner (visceral) sheet that is in contact with the organ and the outward (parietal) sheet. The transition point at which the two leaves merge is called the mesentery , meso or radix (root).
Serous caves are:
- Pleural cavity ( Cavitas pleuralis )
- Pericardial cavity ( Cavitas pericardialis )
- Peritoneal cavity ( peritoneal space , cavitas peritonealis ), starting from there on both sides the scrotal cavity ( cavitas scroti )
The serous cavities develop from the secondary body cavity ( coelom ).
Pathological processes in serous cavities
In order to ensure the mobility and displaceability of the viscera in the serous cavities, there is always a film of liquid on the surface of the serous cavities. This fluid film is not formed by glands , but is created by the leakage of fluid from the vessels of the tunica serosa, so that the fluid resembles the blood serum .
If more fluid escapes from the vessels than can be absorbed, an effusion forms . This can happen with inflammatory reactions of the tunica serosa or with congestion of the venous drainage. Another trigger for an accumulation of fluid in serous cavities is a lack of protein concentration in the blood plasma , so that the osmotic pressure in the blood no longer absorbs the fluid to a sufficient extent. This explains the swollen belly of children with severe malnutrition and thus also a lack of protein. An effusion in the pericardial cavity in particular can be life-threatening because the heart's pumping capacity is restricted ( pericardial tamponade ). The effusions are treated by puncturing and aspirating the fluid and treating the causes.
literature
- Franz-Viktor Salomon: The body cavities. In: Franz-Viktor Salomon, Hans Geyer and Uwe Gille (eds.): Anatomy for veterinary medicine. Enke Stuttgart. 3rd ext. Edition, pp. 31-36. 2015 ISBN 978-3-8304-1288-5