Changes

==Introduction==

==Introduction==

Deglutition is the process of swallowing. Food is passed from the [[Oral Cavity - Oropharynx - Anatomy & Physiology|oral pharynx]] into the oesophageal/laryngeal [[Pharynx - Anatomy & Physiology|pharynx]] whilst the [[epiglottis]] closes across the entrance of the [[Trachea - Anatomy & Physiology|trachea]].

Deglutition is the process of swallowing. Food is passed from the [[Oral Cavity - Oropharynx - Anatomy & Physiology|oral pharynx]] into the oesophageal/[[Larynx - Anatomy & Physiology#Laryngeal Pharynx|laryngeal]] [[Pharynx - Anatomy & Physiology|pharynx]] whilst the [[epiglottis]] closes across the entrance of the [[Trachea - Anatomy & Physiology|trachea]].

It is a voluntary reflex preventing food from passing into the [[Trachea - Anatomy & Physiology|trachea]] causing choking and eventually respiratory pneumonia.

It is a voluntary reflex preventing food from passing into the [[Trachea - Anatomy & Physiology|trachea]] causing choking and eventually respiratory pneumonia.

5. [[Epiglottis]] bends back to prevent food entering [[Larynx - Anatomy & Physiology|larynx]].

5. [[Epiglottis]] bends back to prevent food entering [[Larynx - Anatomy & Physiology|larynx]].

6. Bolus enters oesophageal [[Pharynx - Anatomy & Physiology|pharynx]] and [[Oral Cavity - Tongue - Anatomy & Physiology|tongue]] relaxes. Bolus is passed on down [[Oesophagus - Anatomy & Physiology|oesophagus]] by a concentric series of contractions by each set of contractor muscle in turn called [http://en.wikipedia.org/wiki/Peristalsis| peristalsis]

6. Bolus enters [[Larynx - Anatomy & Physiology#Laryngeal Pharynx|laryngeal pharynx]] and [[Oral Cavity - Tongue - Anatomy & Physiology|tongue]] relaxes. Bolus is passed on down [[Oesophagus - Anatomy & Physiology|oesophagus]] by a concentric series of contractions by each set of contractor muscle in turn called [http://en.wikipedia.org/wiki/Peristalsis| peristalsis]

7. Pharyngeopalatine arch reopens, [[Hyoid Apparatus - Anatomy & Physiology|hyoid]] moves back by geniohyoid and glottis reopens.

7. Pharyngeopalatine arch reopens, [[Hyoid Apparatus - Anatomy & Physiology|hyoid]] moves back by geniohyoid and glottis reopens.

==Links==

==Links==

[[Diseases of the conducting airways]]

[[Diseases of the conducting airways]]