Changes

==Structure==

==Structure==

*[[Pharynx - Anatomy & Physiology|Pharynx]] rostrally

The [[Pharynx - Anatomy & Physiology|pharynx]] is located rostrally to the larynx, whilst the trachea is located caudally. The larynx is suspended from the [[Hyoid Apparatus - Anatomy & Physiology|hyoid apparatus]]. The larynx is bilaterally symmetrical and 'tube-shaped', it can be described as a '''musculocartilagenous organ'''.

*Tube-shaped

Synovial joints can be found between the '''thyrohyoid bone''' and the dorsorostral aspect of the '''thyroid cartilage'''. Synovial joints include the dorsal joint of '''thyroid cartilage'''; between the lateral aspect of the '''cricoid cartilage''' and the dorsocaudal aspect of the '''thyroid cartilage''' and between the '''cricoid''' and '''arytenoid cartilage'''. This allows abduction and adduction of the '''arytenoid cartilages'''. Movement of the '''cricoid-arytenoid joint'' controls the size of the glottic opening, the lumen and the larynx.

*Suspended from the [[Hyoid Apparatus - Anatomy & Physiology|hyoid apparatus]]

Membranes and elastic ligaments attach the laryngeal cartilages, allowing attatchment of the [[Epiglottis]] to the '''thyroid''' and '''cricoid cartilage'''. The first tracheal ring has attatchment with the '''cricoid cartilage''' by the '''cricotracheal ligament'''.

Extrinsic musculature connects the larynx to the sternum, [[Tongue - Anatomy & Physiology|tongue]], [[Pharynx - Anatomy & Physiology|pharynx]] and [[Hyoid Apparatus - Anatomy & Physiology|hyoid apparatus]].

**Between the thyrohyoid bone and the dorsorostral aspect of the thyroid cartilage

**Lateral aspect of cricoid cartilage and dorsocaudal aspect of thyroid cartilage

*Membranes and elastic ligaments attach the laryngeal cartilages

Intrinsic musculature connects the laryngeal cartilages (see [[Larynx - Anatomy & Physiology#Intrinsic Musculature|here]]).

**[[Epiglottis]] to thyroid and cricoid cartilage

*Intrinsic musculature connects the laryngeal cartilages (see [[Larynx - Anatomy & Physiology#Intrinsic Musculature|here]])

The '''vestibule''' extends from the entrance of the larynx to the '''arytenoid cartilages''' and '''vocal folds'''. The '''vestibular folds''' run parallel, but rostral to, the '''vocal folds'''.

*The glottic cleft (rima glottidis) is surrounded by the arytenoid cartilages dorsally and vocal folds ventrolaterally

The '''glottic cleft''' (rima glottidis) is surrounded by the '''arytenoid cartilages''' dorsally and '''vocal folds''' ventrolaterally. It varies in size and is diamond shaped. The glottic cleft disappears when the glottis is closed. Vocal folds run caudodorsally. The '''infraglottic cavity''' extends from the caudal section of the '''arytenoid cartilages''' into the lumen of the trachea. It is fixed in size.

**Varies in size

**Diamond shaped

**Glottic cleft disappears when the glottis is closed

**Vocal folds run caudodorsally

*[[Epiglottis]] is the rostral margin of the larynx

The [[Epiglottis]] is the rostral margin of the larynx.

==The Cartilage of the Larynx==

==The Cartilage of the Larynx==