Avian Anatomy 3 Flashcards
Whats an oesophagus modification birds have
Crop
What are the two parts the stomach is divided into
Proventriculus (glandular) and gizzard/ventriculus (muscular)
How many caeca do birds have
2
What is the choana
Slit opening to nasal cavity
What are palatine ridges
With caudally facing papillae - food movement
What are infundibular cleft
Auditory tube opening
Does the tongue have muscles
No
What is the function of salivary glands (2)
- Lubricant for food
2. May be sticky
What does swallowing rely on
Relies on raking papillae
What is the function of the crop
- Can store food
- Transport of food
- Site of physical digestion
- Formation of crop milk
What does the proventriculus stomach do
- Dilation
- Papillary projections
- No pyloric sphincter
What does the ventriculus/gizzard stomach do
- thick, discus shaped muscular
- Left of peritoneal cavity
- heavy muscular layers
- Less well defined
What do the intestines terminate
Cloaca
What is the origin of the colon
Junction ileum-colon/rectum
Where is there a sphincter in the colon located
Ileocolic junction
