HEAD & NECK (Tongue) Flashcards
Divides the tongue into right and left halves
Median groove/median sulcus
3 parts of the tongue
Root
Body
Apex
Bones where root of tongue attaches
Mandible
Hyoid
V-shaped groove at dorsum of tongue
Sulcus terminalis
Apex of sulcus terminalis points to this structure
Foramen cecum
Small nipple-shaped projections on the anterior 2/3 of the dorsum of the tongue
Lingual papillae
Type of lingual papillae that are arranged in the form of “V” in the front of sulcus terminalis
Vallate papillae
Mushroom-shaped projections scattered on the sides of apex and tongue
Fungiform papillae
Slender conical projections arranged in rows parallel to the sulcus terminalis
Filiform papillae
Lingual papillae rudimentary in humans
Foliate papillae
Extrinsic tongue muscle that elevates the tongue
Palatoglossus
Extrinsic tongue muscle that retracts the tongue
Styloglossus
Extrinsic tongue muscle that depresses the tongue
Hyoglossus
Extrinsic tongue muscle that protrudes the tongue
Genioglossus
What are the intrinsic tongue muscles?
Superior longitudinal
Inferior longitudinal
Transverse
Vertical
Intrinsic or extrinsic: alters the shape of the tongue
Intrinsic tongue muscles
Intrinsic or extrinsic: alters the position of the tongue
Extrinsic tongue muscles
What innervates majority of the tongue muscles (except palatoglossus)?
CN XII (Hypoglossal nerve)
What cranial nerve innervates the palatoglossus muscle?
CN X (Vagus nerve)
Arterial supply of tongue
Lingual artery
Lingual artery is a branch of?
External Carotid Artery
Venous drainage of tongue
Lingual vein
Lingual vein drains into?
Internal jugular vein
Cranial nerve providing general sensation to the anterior 2/3 of tongue
CN V3 (Mandibular branch of CN V)