Oral Cavity Flashcards
Name the mucous membranes of mouth
Alveolar mucosa Palatine mucosa Lingual mucosa Oral mucosa (floor of mouth) Buccal mucosa Labial mucosa
Which muscles control the size of oral fissure
Orbicularis Oris Risorius Buccinator Zygomaticus minor Zygomaticus major Levator labii superioris Depressor labii inferioris Depressor anguli oris Levator angulii oris
Types of gingivae???
gingivae proper (attached)
Superior and inferior lingual gingivae
Superior and inferior labial gingivae
Superior and inferior buccal gingivae
Gingivae improper (unattached)
Alveolar mucosa
Name the surfaces of teeth
Occlusal surface Distal contact surface Mesial contact surface Vestibular (labial/buccal) surface Palatal (lingual) surface
What is periodontium?
Alveolar periosteum surrounding the alveolar process of maxilla and mandible outward and inward cement
Function of root canal?
What surrounds it?
Transmit nerves and vessels from apical foramina towards the pulp cavity
Surrounded by dentine
Enamel continues into neck and root as?
Cement
What us odontoblast layer
It surrounds the pulp cavity and root canal
Name the joint of teeth
Gomphosis/dento alveolar syndesmosis
Which membrane is present in gomphosis and what is its importance?
Periodontal membrane/periodontium is present between cement of root and periosteum of alveolus.
It is supplied with pressoreceptive endings for detecting pressure
Which area is superior to soft palate?
Nasopharynx
What passes through incisive fossa?
Nasopalatine nerves
Sphenopalatine arteries
What makes the palate?
Ant 2/3: Palatine process of maxilla and horizontal process of Palatine
Post 1/3: moveable, suspended from hard palate
Anteriorly–> Palatine aponeurosis
Posteriorly–> muscular part
Soft palate is joined to tongue and and pharynx by?
Tongue: palatoglossal
Pharynx: palatopharyngeal
fauces is the space between?
Oral cavity and pharynx
Where are Palatine tonsils located?
Between palatoglossal and palatopharyngeal arches in the tonsillar sinus
Fauces is bounded by?
Superiorly:
Inferiorly:
Laterally:
Soft palate
Root of tongue
Arches: palatoglossal and palatopharyngeal
Features of palate?
Incisive papilla overlying incisive fossa
Transverse Palatine folds/rugae
Palatine raphe passing posteriorly from incisive papilla
Palatine glands all over beneath mucosal layers shown by pitted palate which is the opening of these glands’ ducts
root of tongue is present between which two bones?
mandible and hyoid
angle of terminal sulcus points where?
foramen cecum
name the lingual papillae
vallate
foliate
filiform
fungiform
what is the dorsum of the tongue?
the superior and posterior part of tongue is the dorsum
it is divided by terminal sulcus into pre sulcus and post sulcus
which papillae has afferent nerve ending sensitive to touch?
filiform
where is lingual tonsils located and what are these?
located in posterior portion of tongue: the post terminal sulcus
and these are lymphoid nodules
what is sublingual caruncle
present on inferior surface of tongue lateral to frenulum
has submandibular openings
which extrinsic tongue muscle blends with intrinsic tongue muscle?
palatoglossus
nerve supply of muscles of tongue?
hypoglossal nerve
exemption: palatoglossus which is innervated by vagus nerve
where right and left halves of tongue muscles merge?
what seperates them?
lingual aponeurosis
lingual septum
where chorda tympani and lingual nerve join and what does it do?
they join in infratemporal fossa and carry special and general sensation to tongue ka ant 2/3
