Difference between revisions of "Proventriculus - Anatomy & Physiology"
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| Line 16: | Line 16: | ||
*Secretes digestive enzymes | *Secretes digestive enzymes | ||
| − | *Contacts the left lobe of the liver ventrally | + | *Contacts the left lobe of the liver ventrally and laterally |
| + | |||
| + | *Related dorso-caudally to the spleen | ||
*More cranial than the [[The Gizzard - Anamtomy & Physiology|gizzard]] | *More cranial than the [[The Gizzard - Anamtomy & Physiology|gizzard]] | ||
| − | *Lies | + | *Lies to the left of the midline of the bird |
*Spindle/fusiform shaped | *Spindle/fusiform shaped | ||
*Roughly 4cm long | *Roughly 4cm long | ||
| + | |||
| + | *Lumen diameter similar to the [[Oesophagus - Anatomy & Physiology|oesophagus]] | ||
| Line 32: | Line 36: | ||
*Columnar epithelium | *Columnar epithelium | ||
| + | |||
| + | *Basolphilic | ||
*Papillae- through which collecting ducts from glands run | *Papillae- through which collecting ducts from glands run | ||
| Line 40: | Line 46: | ||
*Glands in the submucosa | *Glands in the submucosa | ||
| + | |||
| + | *Single tubular glands are grouped into lobules with a common opening into a papillae | ||
| + | |||
| + | *Serous membrane of mesothelial cells attached to the outer longitudinal layer of muscle | ||
| + | |||
| + | *3 layers of lamina muscularis | ||
| + | |||
| + | *No parietal cells | ||
Revision as of 16:26, 7 July 2008
Introduction
The proventriculus is also referred to as the muscular stomach. It is connected by the isthmus to the gizzard.
Structure and Function
- A storage organ in fish and flesh eating birds
- Appropriate to a soft diet
- Secretes digestive enzymes
- Contacts the left lobe of the liver ventrally and laterally
- Related dorso-caudally to the spleen
- More cranial than the gizzard
- Lies to the left of the midline of the bird
- Spindle/fusiform shaped
- Roughly 4cm long
- Lumen diameter similar to the oesophagus
Histology
- Mucous cells
- Columnar epithelium
- Basolphilic
- Papillae- through which collecting ducts from glands run
- Lamina propria run into the papillae
- Hydrochloric acid and pepsin produced
- Glands in the submucosa
- Single tubular glands are grouped into lobules with a common opening into a papillae
- Serous membrane of mesothelial cells attached to the outer longitudinal layer of muscle
- 3 layers of lamina muscularis
- No parietal cells