Difference between revisions of "Species Differences in Laryngeal Structure"
m (Text replace - "[[Epiglottis|" to "[[Larynx - Anatomy & Physiology#") |
|||
| (3 intermediate revisions by the same user not shown) | |||
| Line 1: | Line 1: | ||
| − | [[Larynx - Anatomy & Physiology]] | + | {{OpenPagesTop}} |
| + | For information about general laryngeal structure see <big>'''[[Larynx - Anatomy & Physiology]]'''</big>. | ||
===Equine=== | ===Equine=== | ||
| − | Fusion of the two plates of the thyroid cartilage is incomplete forming a rostral pointing notch which is a good site for surgical entry into the larynx. The '''thyroarytenoid muscle''' is divided into 2 parts; the '''rostral''' and '''caudal vocalis''', which are situated within the vocal folds and vestibular folds. The '''cuneiform processes''' are attached to the [[Larynx - Anatomy & Physiology#epiglottis]]. | + | Fusion of the two plates of the thyroid cartilage is incomplete forming a rostral pointing notch which is a good site for surgical entry into the larynx. The '''thyroarytenoid muscle''' is divided into 2 parts; the '''rostral''' and '''caudal vocalis''', which are situated within the vocal folds and vestibular folds. The '''cuneiform processes''' are attached to the [[Larynx - Anatomy & Physiology#Epiglottis|epiglottis]]. |
===Canine=== | ===Canine=== | ||
| Line 11: | Line 12: | ||
===Ruminants=== | ===Ruminants=== | ||
| − | The '''thyroid cartilage''' in ruminants is completely ventral. A small median ventricle is present in sheep and goats. There is a narrow glottic cleft, making intubation difficult. The larynx is close to the median '''retropharyngeal lymph node''', so enlargement of the lymph nodes may compress the larynx as well as the [[Pharynx - Anatomy & Physiology|pharynx]]. | + | The '''thyroid cartilage''' in ruminants is completely ventral. A small median ventricle is present in sheep and goats. There is a narrow glottic cleft, making intubation difficult. The larynx is close to the median '''retropharyngeal lymph node''', so enlargement of the lymph nodes may compress the [[Larynx - Anatomy & Physiology|larynx]] as well as the [[Pharynx - Anatomy & Physiology|pharynx]]. |
===Porcine=== | ===Porcine=== | ||
| − | A small laryngeal ventricle is present and there are double corniculate process in the '''arytenoid cartilages'''. Stimulation of laryngeal mucosa can | + | A small laryngeal ventricle is present and there are double corniculate process in the '''arytenoid cartilages'''. Stimulation of laryngeal mucosa can result in violent laryngeal spasms. |
===Avian=== | ===Avian=== | ||
| − | There are no vocal folds in avian species. Sound in the bird is produced in the [[Syrinx - Anatomy & Physiology|syrinx]]. The larynx is on the [[Hyoid Apparatus - Anatomy & Physiology|hyoid apparatus]]. There are paired arytenoids, one constrictor and one dilator muscle only. There is no [[Larynx - Anatomy & Physiology#epiglottis]]. | + | There are no vocal folds in avian species. Sound in the bird is produced in the [[Syrinx - Anatomy & Physiology|syrinx]]. The larynx is on the [[Hyoid Apparatus - Anatomy & Physiology|hyoid apparatus]]. There are paired arytenoids, one constrictor and one dilator muscle only. There is no [[Larynx - Anatomy & Physiology#Epiglottis|epiglottis]]. |
| + | {{OpenPages}} | ||
[[Category:Respiratory System - Anatomy & Physiology]] | [[Category:Respiratory System - Anatomy & Physiology]] | ||
| − | [[Category: | + | [[Category:A&P Done]] |
Latest revision as of 15:18, 28 June 2012
For information about general laryngeal structure see Larynx - Anatomy & Physiology.
Equine
Fusion of the two plates of the thyroid cartilage is incomplete forming a rostral pointing notch which is a good site for surgical entry into the larynx. The thyroarytenoid muscle is divided into 2 parts; the rostral and caudal vocalis, which are situated within the vocal folds and vestibular folds. The cuneiform processes are attached to the epiglottis.
Canine
The thyroarytenoid muscle is divided into 2 parts; the rostral and caudal vocalis, which are situated within the vocal folds and vestibular folds. There are laryngeal ventricles present.
Feline
Feline species have thick vocal folds. Purring occurs due to vibration of the vocal folds (and of the diaphragm) by rapid twitching of the laryngeal muscles. They have very sensitive mucosa, making intubation tricky.
Ruminants
The thyroid cartilage in ruminants is completely ventral. A small median ventricle is present in sheep and goats. There is a narrow glottic cleft, making intubation difficult. The larynx is close to the median retropharyngeal lymph node, so enlargement of the lymph nodes may compress the larynx as well as the pharynx.
Porcine
A small laryngeal ventricle is present and there are double corniculate process in the arytenoid cartilages. Stimulation of laryngeal mucosa can result in violent laryngeal spasms.
Avian
There are no vocal folds in avian species. Sound in the bird is produced in the syrinx. The larynx is on the hyoid apparatus. There are paired arytenoids, one constrictor and one dilator muscle only. There is no epiglottis.
Error in widget FBRecommend: unable to write file /var/www/wikivet.net/extensions/Widgets/compiled_templates/wrt663527ba3f53c6_31993744 Error in widget google+: unable to write file /var/www/wikivet.net/extensions/Widgets/compiled_templates/wrt663527ba42a7f2_96782384 Error in widget TwitterTweet: unable to write file /var/www/wikivet.net/extensions/Widgets/compiled_templates/wrt663527ba45a334_25042361
|
| WikiVet® Introduction - Help WikiVet - Report a Problem |