Difference between revisions of "Hyoid Apparatus - Anatomy & Physiology"
Jump to navigation
Jump to search
| Line 6: | Line 6: | ||
==Introduction== | ==Introduction== | ||
| − | + | The hyoid apparatus holds the [[Larynx - Anatomy & Physiology|larynx]] in place and supports the [[Pharynx - Antomy & Physiology|pharynx]] and [[Oral Cavity - Tongue - Anatomy & Physiology|tongue]] from the skull. | |
| − | |||
| − | + | It is made up of 5 different bones which vary in length and size depending on the species. | |
| − | + | ==Structure and Function== | |
| − | |||
| − | |||
| − | + | *Attached to the temporal region of the skull | |
| − | * | + | *Palpable through [[Pharynx - Anatomy & Physiology|pharynx]] |
| − | + | *Visible when the [[Pharynx - Anatomy & Physiology|pharynx]] is viewed through the mouth | |
| − | * | + | *Basihyoid is palpable within the intermandibular space |
| − | + | *Sternohyoid muscle pulls hyoid caudally | |
| − | * | + | *Geniohyoid muscle pulls hyoid rostrally |
| − | == | + | ===The hyoid bones=== |
| − | * | + | *Basihyoid |
| + | **Lingual process present in some species which protrudes into the roof of the [[Oral Cavity - Tongue - Anatomy & Physiology|tongue]] | ||
| − | + | *Stylohyoid | |
| + | **Articulates with base of skull at petrus temporal | ||
| + | **Articulates with [[Larynx - Anatomy & Physiology#Thyroid Cartilage|thyroid cartilage]] of [[Larynx - Anatomy & Physiology|larynx]] | ||
| − | * | + | *Epihyoid |
| + | |||
| + | *Keratohyoid | ||
| + | |||
| + | *Thyrohyoid | ||
==Species Differences== | ==Species Differences== | ||
| − | * | + | ===Carnivores=== |
| + | *Stylohyoid bones not palpable | ||
| + | |||
| + | ===Equine=== | ||
| + | *Epihyoid small | ||
| + | |||
| + | ===Ruminants=== | ||
| + | *Lingual process present | ||
| + | |||
| + | ===Porcine=== | ||
| + | *Lingual process present | ||
==Links== | ==Links== | ||
Revision as of 14:05, 29 July 2008
Introduction
The hyoid apparatus holds the larynx in place and supports the pharynx and tongue from the skull.
It is made up of 5 different bones which vary in length and size depending on the species.
Structure and Function
- Attached to the temporal region of the skull
- Palpable through pharynx
- Visible when the pharynx is viewed through the mouth
- Basihyoid is palpable within the intermandibular space
- Sternohyoid muscle pulls hyoid caudally
- Geniohyoid muscle pulls hyoid rostrally
The hyoid bones
- Basihyoid
- Lingual process present in some species which protrudes into the roof of the tongue
- Stylohyoid
- Articulates with base of skull at petrus temporal
- Articulates with thyroid cartilage of larynx
- Epihyoid
- Keratohyoid
- Thyrohyoid
Species Differences
Carnivores
- Stylohyoid bones not palpable
Equine
- Epihyoid small
Ruminants
- Lingual process present
Porcine
- Lingual process present