Changes

 

==Introduction==

==Introduction==

The avian hard palate contains a slit-like opening called the choanal opening which communicates with the nasal pharynx. Air travels through the choanal opening into the infundibulum then dorsally into the auditory tubes.

The avian hard palate contains a slit-like opening called the '''choanal opening''' which communicates with the nasal pharynx. Air travels through the choanal opening into the '''infundibulum''', then dorsally into the '''auditory tubes'''.

[[Image:Choana and Infundibulum Avain.jpg|thumb|right|150px|Anatomy of the Avian Hard Palate showing the Choanal opening into the Infundibulum - RVC 2008]]

[[Image:Choana and Infundibulum Avain.jpg|thumb|right|250px|Anatomy of the Avian Hard Palate showing the Choanal opening into the Infundibulum - RVC 2008]]

==Structure and Function==

==Structure and Function==

*Several rows of caudally facing [[Oral Cavity - Tongue - Anatomy & Physiology#Types of Papillae|conical]] papillae

There are several rows of caudally facing '''[[Tongue - Anatomy & Physiology#Types of Papillae|conical]] papillae'''. A long, narrow, median slit in the [[Pharynx - Anatomy & Physiology|pharynx]] marks the '''infundibulum'''.

 

*Long, narrow, median slit in the pharynx marks the infundibulum

 

 

==Histology==

==Histology==

*Numerous [[Oral Cavity - Salivary Glands - Anatomy & Physiology|salivary glands]] are present in the submucosa

There are numerous [[Salivary Glands - Anatomy & Physiology|salivary glands]] present in the '''submucosa'''. Salivary secretions are mainly mucous with some amylase. The hard palate has a thick layer of '''stratified squamous epithelium'''.

 

[[Category:Avian Alimentary System - Anatomy & Physiology]]

[[Hard Palate - Anatomy & Physiology]]

[[Category:A&P Done]]