Difference between revisions of "Crop - Anatomy and Physiology"
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==Introduction== | ==Introduction== | ||
The crop is a food storage device present in avian species. It is usually used when the muscular stomach ([[Gizzard - Anatomy & Physiology|gizzard]]) is full. The crop also softens food. | The crop is a food storage device present in avian species. It is usually used when the muscular stomach ([[Gizzard - Anatomy & Physiology|gizzard]]) is full. The crop also softens food. | ||
− | It is a useful tool for avian veterinarians and owners for assessing | + | It is a useful tool for avian veterinarians and owners for assessing when the bird last ate and it is especially important to ensure young chicks always have full crops. It is also a common site for impactions and surgical entry to remove foreign bodies. |
==Structure and Function== | ==Structure and Function== | ||
− | [[Image:Crop of fowl.JPG|thumb|right| | + | [[Image:Crop of fowl.JPG|thumb|right|150px|Crop of fowl(Copyright RVC)]] |
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+ | *Muscular chamber | ||
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+ | *Fusiform enlargement of the [[Oesophagus - Anatomy & Physiology|oesophagus]] | ||
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+ | *Thoracic inlet of ventral wall of [[Oesophagus - Anatomy & Physiology|oesophagus]] | ||
− | + | *Bulges and lies against the breast muscles | |
==Innervation== | ==Innervation== | ||
− | + | *Vagus nerve ([[Cranial Nerves - Anatomy & Physiology|CN X]]) | |
==Species Differences== | ==Species Differences== | ||
− | + | *Crop small in ducks and geese | |
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+ | *Crop much larger and muscular in seed eating birds | ||
− | == | + | *Pigeons have epithelial cells in their crop sensitive to prolactin which slough when chicks (squabs) hatch producing crop milk |
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+ | *Owls have no storage facility in their crops, so produce a pellet of indigestible material after every meal | ||
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+ | ==Test yourself with the Avian Alimentary Tract flashcards== | ||
− | + | [[The Avian Alimentary Tract - Anatomy & Physiology - Flashcards|Avian Alimentary Tract Flashcards]] | |
+ | ==Links== | ||
− | + | [[Oesophagus - Anatomy & Physiology]] | |
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[[Category:Avian Alimentary System - Anatomy & Physiology]] | [[Category:Avian Alimentary System - Anatomy & Physiology]] | ||
− | [[Category:A&P | + | [[Category:To Do - A&P]] |
Revision as of 13:46, 9 September 2010
Introduction
The crop is a food storage device present in avian species. It is usually used when the muscular stomach (gizzard) is full. The crop also softens food.
It is a useful tool for avian veterinarians and owners for assessing when the bird last ate and it is especially important to ensure young chicks always have full crops. It is also a common site for impactions and surgical entry to remove foreign bodies.
Structure and Function
- Muscular chamber
- Fusiform enlargement of the oesophagus
- Thoracic inlet of ventral wall of oesophagus
- Bulges and lies against the breast muscles
Innervation
- Vagus nerve (CN X)
Species Differences
- Crop small in ducks and geese
- Crop much larger and muscular in seed eating birds
- Pigeons have epithelial cells in their crop sensitive to prolactin which slough when chicks (squabs) hatch producing crop milk
- Owls have no storage facility in their crops, so produce a pellet of indigestible material after every meal
Test yourself with the Avian Alimentary Tract flashcards
Avian Alimentary Tract Flashcards