HYOID Muscles Flashcards
HYOID Muscles are in close relationship to which muscles?
Tongue muscles
HYOID muscles
Devided into groups
- DORSAL group
2. VENTRAL group
What are the HYOID muscles belonging to the DORSAL GROUP?
- M. Mylohyoideus
- M. Geniohyoideus
- M. Stylohyoideus
- M. Occipitohyoideus *
- M. Ceratohyoideus
- M. Hyoideus transversus
DORSAL group
M.MYLOHYOIDEUS
Flat Muscle
Fibers run transversely
O: LINEA Mylohyoidea
I: RAPHE Mylohyoidea
Ca,Su: caudal fibers on the BASIHYOID
Eq, Bo: on the PROCESSUS LINGUALIS of HYOID bone.
A: Support the Tongue
- Elevate the Tongue
DORSAL group
M.GENIOHYOIDEUS
Long, fusiform
In the ibtermandibular space
Covered by M. mylohyoideus
O: Incicive part of Mandibula
I: BASI HYOID,
Processus Lingualis of hyoidbone in Eq+Bo
A: Moves the hyoidbone
- moves Tongue rostrally
DORSAL group
M.STYLOHYOIDEUS
O: From the DORSAL end of the STYlOHYOID
I: THYROHYOID
A: Moves the HYOID bone and LARYNX CAUDALLY and DORSALLY
DORSAL group
M.OCCIPITOHYOIDEUS
O: Processus Paracondylaris
I: DORSAL end of the STYLOHYOID
A: Helps to move the Ventral end of the STYlOHYOID
- moves the Tongue and the Larynx caudoventrally.
DORSAL group
M.CERATOHYOIDEUS
Under hypoglossus Muscle
O: Rostral part of the THYROHYOID
I: Caudal border of THYROHYOID
A: Moves the larynx rostrally
DORSAL group
M.HYOIDEUS TRANSVERSUS
- Connects the CERATOHYOIDS
- Ø in ca🐶 and Su🐷
HYOID MUSCLES
VENTRAL GROUP consisting of:
- M.Sternohyoideus
- M. Sternothyroideus
- M. Thyrohyoideus
- M. Omohyoideus
HYOID MUSCLES
VENTRAL GROUP
M. STERNOHYOIDEUS
O: MANUBRIUM STERNI
I: BASIHYOID
A:
- Pulls the HYOID bone CAUDALLY
- Pulls the RADIX LINGUAE CAUDALLY
- Pulls the LARYNX CAUDALLY
HYOID MUSCLES
VENTRAL GROUP
M.STERNOTHYROIDEUS
O: MANUBRIUM STERNI
I: Lateral surface of LAMINA THYROIDEA, rostrally continued by the THYROHYOID Muscle
A:
- Draws the larynx caudally
- HYOID bone, Tongue pulled caudally
HYOID MUSCLES
VENTRAL GROUP
M. THYROHYOIDEUS
O: LAMINA THYROIDEA
I: CAUDAL BORDER of the THYROHYOID
A: HYOID bone and Tongue pulled caudally
HYOID MUSCLES
VENTRAL GROUP
M. OMOHYOIDEUS
Ø in carnivores
O:
In Eq: FASCIA SUBSCAPULARIS, PROC. TRANSVERSUS of C2-C4
I: BASI HYOID
A: Draws the HYOID bone And LARYNX caudally
