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==Introduction==

==Introduction==

The avian hard palate contains a slit-like opening called the choanal opening which communicates with the [[Nasopharynx - Anatomy & Physiology|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 - Anatomy & Physiology|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'''.

 

*Salivary secretions are mainly mucous with some amylase

 

*Thick layer of stratified squamous epithelium

 

 

 

==Links==

==Links==

[[Hard Palate - Anatomy & Physiology]]

Click here for more information on the '''[[Hard Palate|hard palate]]'''.

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

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

[[Category:A&P Done]]