Suprahyoid Muscle Flashcards
Origin: styloid process of temporal bone
Insertion: body of hyoid bone
Action: elevate hyoid bone
Fiber Direction: inferior, anterior
Stylohyoid bone
- has 2 muscle bellies
Origin: medial surface of mastoid process, inferior surface of body of mandible
Insertion: body of hyoid bone
Action: elevate hyoid bone
Fiber direction: posterior belly inferior,anterior ;
Anterior belly inferior, posterior
Digastric Muscle
- has bigger muscle bellies
Origin: inferior surface of mandible
Insertion: body of hyoid bone
Action: elevates the hyoid bone
Fiber direction: inferior;posterior
Mylohyoid
Origin: inferior surface of mentle of mandible
Insertion: body of hyoid bone
Action: elevates the hyoid bone
Fiber direction: posterior
Geniohyoid
4 parts of suprahyoid muscles
- Stylohyoid
- Digastric
- Mylohyoid
- Geniohyoid
No joints formation, hanging only, attached through ligaments and muscle
Hyoid bone
3 parts of hyoid bone
- Greater horn- side bone
- Body of the hyoid bone- anterior
- Lesser horn
What is the origin of stylohyoid bone?
Origin: styloid process of temporal bone
What is the insertion of stylohyoid bone?
Insertion: Body of hyoid bone
What is the action of stylohyoid bone?
Action: elevate hyoid bone
Fiber direction of stylohyoid bone?
Fiber direction: inferior;anterior
What is the Origin of mylohyoid bone?
Origin: inferior surface of mandible
Insertion of mylohyoid bone?
Insertion:body of hyoid bone
Action of mylohyoid bone?
Action: elevate hyoid bone
Fiber direction of mylohyoid bone?
Inferior;posterior
Origin of digastric muscle?
Medial surface of mastoid process,
Inferior surface of body of mandible
Insertion of digastric?
Body of hyoid bone
Action of digastric
Elevate the hyoid bone
Fiber direction of digastric?
Posterior belly: inferior;anterior
Anterior belly: inferior;posterior
Origin of Geniohyoid?
Inferior surface of mentle of the mandible
Insertion of geniohyoid?
The body of the hyoid bone
Action of geniohyoid?
Elevate the hyoid bone
