Difference between revisions of "Hyoid Apparatus - Anatomy & Physiology"
Jump to navigation
Jump to search
Fiorecastro (talk | contribs) |
|||
(21 intermediate revisions by 8 users not shown) | |||
Line 1: | Line 1: | ||
− | + | <big><center>[[Anatomy & Physiology|'''BACK TO ANATOMY & PHYSIOLOGY''']]</center></big> | |
+ | <big><center>[[Musculoskeletal System - Anatomy & Physiology|'''BACK TO MUSCULOSKELETAL ANATOMY AND PHYSIOLOGY''']]</center></big> | ||
+ | |||
+ | <big><center>[[Anatomy and Physiology|'''BACK TO ANATOMY & PHYSIOLOGY''']]</center></big> | ||
+ | |||
==Introduction== | ==Introduction== | ||
− | The hyoid apparatus holds the [[Larynx - Anatomy & Physiology|larynx]] in place and supports the [[Pharynx - Anatomy & Physiology|pharynx]] and [[Tongue - Anatomy & Physiology|tongue]] from the skull. It is made up of 5 different bones | + | The hyoid apparatus holds the [[Larynx - Anatomy & Physiology|larynx]] in place and supports the [[Pharynx - Anatomy & 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== | ==Structure and Function== | ||
− | + | *Attached to the temporal region of the skull by a synchondrosis | |
− | + | *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 | |
+ | [[Image:Hyoid Bones.jpg|thumb|right|150px|Hyoid Apparatus Drawing - Copyright nabrown]] | ||
+ | ===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=== | ===Carnivores=== | ||
− | + | *Stylohyoid bones not palpable | |
− | Stylohyoid bones | ||
===Equine=== | ===Equine=== | ||
− | + | *Epihyoid small | |
− | Epihyoid | ||
===Ruminants=== | ===Ruminants=== | ||
− | + | *Lingual process present | |
− | Lingual process | ||
===Porcine=== | ===Porcine=== | ||
− | + | *Lingual process present | |
− | Lingual process | ||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− |
Revision as of 14:55, 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 by a synchondrosis
- 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