Difference between revisions of "Soft Palate"
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*Striated palatine muscle | *Striated palatine muscle | ||
| − | + | [[Image:Soft Palate XS.jpg|thumb|right|150px|Soft Palate Cross-section - Copyright RVC]] | |
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| − | [[Image:Soft Palate | ||
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==Musculature and Innervation== | ==Musculature and Innervation== | ||
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**Major innervation from vagus nerve ([[Nervous System - CNS - Anatomy & Physiology#Innervation - Cranial Nerves|CN X]]) | **Major innervation from vagus nerve ([[Nervous System - CNS - Anatomy & Physiology#Innervation - Cranial Nerves|CN X]]) | ||
**Minor from glossopgaryngeal nerve ([[Nervous System - CNS - Anatomy & Physiology#Innervation - Cranial Nerves|CN IX]]) | **Minor from glossopgaryngeal nerve ([[Nervous System - CNS - Anatomy & Physiology#Innervation - Cranial Nerves|CN IX]]) | ||
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| + | ==Histology== | ||
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| + | [[Image:Soft Palate Mouse.jpg|thumb|right|150px|Soft Palate (Mouse) - Copyright RVC 2008]] | ||
| + | *Respiratory mucosa - ciliated pseudostratified columnar epithelium on aboral surface | ||
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| + | *Stratified squamous epithelium on oral surface | ||
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| + | *[[Palatine|Palatine]] salivary glands | ||
==Species Differences== | ==Species Differences== | ||
Revision as of 17:33, 29 July 2008
Introduction
The soft palate (velum palatine) is located caudally to the hard palate. It is comprised of muscle and is involved in tasting food and in deglutition.
Structure and Function
- Muscle
- Contacts epiglottis caudally
- Very folded mucosa
- Striated palatine muscle
Musculature and Innervation
- Sensation and taste from glossopharyngeal (CN IX)
- Palatine muscle
- Tensor velli palatini
- Origin: near tympanic bulla on temporal bone
- Insertion: lateral aponeurosis
- Pharyngeal arch 1
- Mandibular of trigeminal (CN V3)
- Tenses soft palate
- Levator velli palatini
- Palatopharyngeus
Histology
- Respiratory mucosa - ciliated pseudostratified columnar epithelium on aboral surface
- Stratified squamous epithelium on oral surface
- Palatine salivary glands
Species Differences
Porcine
- Soft palate does not contact the epiglottis as the porcine soft palate is raised higher in the oral cavity than in other species
Equine
- Tight laryngeal cuff around the laryngeal entrance therefore the soft palate cannot be raised for long periods of time and thus horses are nasal breathers
Canine
- As brachiocephalic breeds have a shortened skull length, the soft palate often obstruct air flow into the larynx causing breathing difficulties
Avian
- Birds lack a soft palate
Links