Oral Cavity 2 Flashcards
What nerve supplies sensory innervation to the anterior 2/3 of tongue? (General)
Lingual (CNV3)
What nerve allows special sensations to the anterior 2/3 of tongue?
chorda tympani
What nerve supplies sensory innervation to the posterior 1/3 of tongue? (General and special)
Glossopharyngeal nerve
What nerve allows sensory innervation to the base of the tongue? (General and special sensation)
Internal laryngeal nerve (branch of vagus)
What nerve supplies motor innervation to the intrinsic muscles of the tongue?
Hypoglossal
What nerve supplies motor innervation to the extrinsic muscles of the tongue?
all supplied by the hypoglossal nerve expect the palatoglossus
What supplies the palatoglossus muscle?
Pharyngeal plexus
Vagus nerve
What arteries supply the tongue?
Lingual
Tonsillar branch of facial nerve
Ascending pharyngeal
What veins drain the tongue?
Lingual veins
What does the lingual vein drain into?
Internal jugular vein
What lymph drains the tip of tongue?
Submental nodes
What lymph drains the anterior 2/3 of tongue?
Submandibular
what lymph drains the posterior third of tongue?
Deep cervical nodes
What is the main deep cervical node which drains the posterior third of tongue?
jugulodigastric mainly
Taste and tongue
What clinical problem is shown?
Tongue-tie
Ankyloglossia
What causes this?
Lesion of hypoglossal nerve
What way is the lesion in this tongue?
Left side of hypoglossal
