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Pharynx - Anatomy & Physiology (view source)
Revision as of 17:04, 29 July 2008
, 17:04, 29 July 2008no edit summary
The pharynx can be split into different regions- the [[Oral Cavity - Oropharynx - Anatomy & Physiology|oropharynx]], [[Larynx - Anatomy & Physiology#Laryngeal Pharynx|laryngeal pharynx]] (sometimes referred to as the oesophageal pharynx) and the [[Nasopharynx - Anatomy & Physiology|nasopharynx]]
The pharynx can be split into different regions- the [[Oral Cavity - Oropharynx - Anatomy & Physiology|oropharynx]], [[Larynx - Anatomy & Physiology#Laryngeal Pharynx|laryngeal pharynx]] (sometimes referred to as the oesophageal pharynx) and the [[Nasopharynx - Anatomy & Physiology|nasopharynx]]
==Structure==
==Structure and Function==
*Opening of the [[Larynx - Anatomy & Physiology|larynx]] is on the floor of the pharynx
*Opening of the [[Larynx - Anatomy & Physiology|larynx]] is on the floor of the pharynx
*The lining of the middle ear cavity and auditory tube is continuous with that of the [[Nasopharynx - Anatomy & Physiology|nasopharynx]]
*The lining of the middle ear cavity and auditory tube is continuous with that of the [[Nasopharynx - Anatomy & Physiology|nasopharynx]]
*Located between the base of the skull and the first two cervical vertebrae dorsally
*Located between the base of the skull and the first two cervical vertebrae dorsally
*Mandible, pterygoid muscles and [[Hyoid Apparatus - Anatomy & Physiology|hyoid apparatus]] laterally
*Mandible, pterygoid muscles and [[Hyoid Apparatus - Anatomy & Physiology|hyoid apparatus]] laterally
*Walls contain striated muscle
*During [[Deglutition|swallowing]] the [[Soft Palate - Anatomy & Physiology|soft palate]] is raised which divided the pharynx into dorsal and ventral sections
*During [[Deglutition|swallowing]] the [[Soft Palate - Anatomy & Physiology|soft palate]] is raised which divided the pharynx into dorsal and ventral sections
**Partially visible in the open mouth
**Partially visible in the open mouth
==Function==
==Musculature==
===Constictors===
*Run dorsally to roof of pharynx
*Rostral constrictor muscles are the pterygopharyngeous and the palatopharyngeous muscles
**Originate from the pyerygoid region of the skull and the aponeurosis of the [[Soft Palate - Anatomy & Physiology|soft palate]]
**Shorten the pharynx
*Middle constictor muscle is the hyopharyngeous
**Origniates from the [[Hyoid Apparatus - Anatomy & Physiology|hyoid bone]]
*Caudal constictor muscles are the thyropharyngeous and the cricopharyngeous muscles
**Originates from the thyroid cartilage of the [[Larynx - Anatomy & Physiology|larynx]]
===Dilators===
*Enclose pharynx laterally and dorsally
*
===Shorteners===
*Enclose pharynx laterally and dorsally
==Vasculature==
==Vasculature==