Changes

===Muscles that constrict===

===Muscles that constrict===

*Run dorsally to roof of pharynx

Muscles that constrict run dorsally to the roof of the pharynx. Rostral constrictor muscles are the '''hyopharyngeous''', '''pterygopharyngeous''' and the '''palatopharyngeous muscles'''. They originate from the [[Tonsils - Anatomy & Physiology#Pterygoid Bone (os pterygoideum)|pterygoid]] region of the skull and the aponeurosis of the [[Soft Palate|soft palate]] and shorten the pharynx. The middle constictor muscle is the '''thyopharyngeous muscle'''. It origniates from the [[Hyoid Apparatus - Anatomy & Physiology|hyoid bone]]. The caudal constictor muscle is the '''cricopharyngeous muscle'''. It originates from the [[Larynx - Anatomy & Physiology#Thyroid Cartilage|thyroid cartilage]] of the [[Larynx - Anatomy & Physiology|larynx]].

 

*Rostral constrictor muscles are the '''hyopharyngeous''', '''pterygopharyngeous''' and the '''palatopharyngeous muscles'''

**Originate from the [[Tonsils - Anatomy & Physiology#Pterygoid Bone (os pterygoideum)|pterygoid]] region of the skull and the aponeurosis of the [[Soft Palate|soft palate]]

**Shorten the pharynx

 

*Middle constictor muscle is the '''thyopharyngeous muscle'''

**Origniates from the [[Hyoid Apparatus - Anatomy & Physiology|hyoid bone]]

 

*Caudal constictor muscles are the '''cricopharyngeous muscle'''

**Originates from the [[Larynx - Anatomy & Physiology#Thyroid Cartilage|thyroid cartilage]] of the [[Larynx - Anatomy & Physiology|larynx]]

===Muscles that dilate===

===Muscles that dilate===