Notes summarising the anatomy of the tongue including muscles and nervous supply as well as the components to taste, which is a component of Head & Neck anatomy in dentistry. I wrote these notes myself when I was studying for my own exam and my notes helped me get a first (A) in my exam!
Suprahyoid muscles Oral cavity landmarks:
1. Mylohyoid Palatoglossal arch; Palatopharyngeal arch; oropharyngeal isthmus
2. Anterior and posterior belly of digastric (formed by palatoglossal arches; dorsum of tongue
3. Stylohyoid
4. Geniohyoid Tongue:
Ventral surface: lingual frenulum, deep lingual veins, lining mucosa, no
Muscle Origin Insertion Function Innervation papillae
Mylohyoid Mylohyoid Body of hyoid Nerve to
line mylohyoid Muscles of tongue: -> medial sagital septum – ALL muscles paired
(CNV3)
Anterior Digastric Intermediate Depress Nerve to
belly of fossa tendon of mandible mylohyoid
digastric hyoid fixed hyoid (CNV3)
Elevate
hyoid
when
swallowing
Posterior Mastoid Intermediate Depress Facial nerve
belly of notch tendon of mandible (CNVII)
digastric hyoid fixed hyoid n. to PBOD
Elevate and
hyoid stylohyoid
when
swallowing
Geniohyoid Inferior Hyoid bone Elevates C1 via
genial hyoid bone hypoglossal
spines (CN XII)
Stylohyoid Styloid Hyoid bone Elevate Facial nerve
process hyoid (VII) n to
when stylohyoid
swallowing
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