Corpus: Maxillary sinus

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Synonym: maxillary sinus
English:
1. Definition[Bearbeiten]
The maxillary sinus, also known as the maxillary sinus, is a cavity of the skull belonging to the paranasal sinuses (sinus paranasales). It is formed in all domestic mammals.
2. Anatomy[Bearbeiten]
The maxillary sinus belongs to the paranasal sinuses and is formed differently in different domestic mammals.
2.1. Carnivores[Bearbeiten]
The maxillary sinus of carnivores is particularly different from those of other domestic mammals. It is not - as usual - formed between the outer and inner plate of the bones bordering it, but rather forms a bay bordered by these bones, which is known as the maxillary recess.
The outer wall of the maxillary sinus is formed by the maxilla (upper jaw), the os lacrimale (lacrimal bone) and the os palatinum (palatine bone). The inner wall, on the other hand, is provided by the lamina externa of the ethmoid bone.
2.2. Pig[Bearbeiten]
The maxillary sinus in pigs is mainly located in the maxilla and the os lacrimale. In older animals, it often extends into the zygomatic bone.
2.3. Ruminants[Bearbeiten]
The maxillary sinus of ruminants pneumatises the maxilla on the one hand and the os zygomaticum on the other and also has wide connections with the lacrimal sinus (sinus lacrimalis) and palatine sinus (sinus palatinus). In this way, an extensive cavity system is formed.
2.4. Horse[Bearbeiten]
The maxillary sinus in the horse is formed in the maxilla, the os zygomaticum and the os lacrimale. The variably pronounced transverse septum (septum sinuum maxillarium) divides the maxillary sinus into two separate spaces:
- the larger caudal maxillary sinus (sinus maxillaris caudalis) and
- the smaller rostral maxillary sinus (sinus maxillaris rostralis).
3. Literature[Bearbeiten]
- Nickel, Richard, August Schummer, Eugen Seiferle. Volume I: Musculoskeletal system. Textbook of the anatomy of domestic animals. Parey, 2004
- Breit, Sabine, Künzel, Wolfgang. Structure and function of the respiratory organs, heart, circulation and lymphatic organs (respiratory organs). SS 2015