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Oesophagus - Anatomy & Physiology (view source)
Revision as of 09:23, 22 July 2008
, 09:23, 22 July 2008no edit summary
*Different proportions of striated muscle across the species
*Different proportions of striated muscle across the species
**Dog and ruminant = 100%
**Cat = 80% (rostral)
**Horse = 65% (rostral)
**Pig = 33% (rostral)
===Canine===
===Canine===
*Canid has no keratinisation
*No keratinisation
*Lamina muscularis present caudally in dogs (spirally aranged)
*Lamina muscularis present caudally (spirally aranged)
*Lamina muscularis absent cranially in dogs
*Lamina muscularis absent cranially
*Mucous glands throughout in dog but more abundant caudally
*Mucous glands throughout but more abundant caudally
===Equine===
===Equine===
*Horse has some keratinisation
*Some keratinisation
===Ruminant===
===Ruminant===
*Ruminant has a lot of keratinisation
*Heavily keratinised
===Porcine===
===Porcine===
*Lamina muscularis present caudally in pigs (very thick)
*Lamina muscularis present caudally (very thick)
*Lamina muscularis absent cranially in pigs
*Lamina muscularis absent cranially
*Pig has some keratinisation
*Some keratinisation
*Mucous glands abundant cranially but absent caudally in pig
*Mucous glands abundant cranially but absent caudally
===Avian===
===Avian===
*Avian differences- [[Crop- Anatomy and Physiology|the crop]]
*See [[Crop- Anatomy and Physiology|the crop]]
*Ducks have an oesophangeal tonsil present in the caudal segment of oesophagus
*Ducks have an oesophangeal tonsil present in the caudal segment of oesophagus
[[Oesophagus#Megoesophagus Secondary to Dextra-Aorta|Megoesophagus]]
[[Oesophagus#Megoesophagus Secondary to Dextra-Aorta|Megoesophagus]]
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