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Oral Cavity & Pharynx (Week4) (Boundaries Cavity) (Oral Cavity Space…
Oral Cavity & Pharynx (Week4)
Muscles & Innervation
Oral Cavity
Tongue
Extrinsic
Styloglossus (Back; Retrude)
Hyoglossus (Bottom; Depress)
Genioglossus (Front; Protrude)
Palatoglossus (Top; Elevate)
Intrinsic
Transverse
Longitudinal
Superior Longitudinal
Inferior Longitudinal
Vertical
All by
Hypoglossal CN12
Except Palatoglossal (Pharyngeal Plexus)
Soft Palate
Posterior 1/3, Hard palate anterior 2/3
Mucoperiosteum (no submucosa)
Tensor Palatini
(CN5c)
Levator Palatini
Palatoglossus
Movement:
Depresses soft palate
Lifts up tongue
Palatopharyngeus
Movement:
Depresses soft palate
Lifts up pharynx
Muscular Uvulae
Epithelium of Hard Palate
Mucoperiosteum (No submucosa)
All by
Pharyngeal Plexus
Except Tensor Palatini (CN5c)
CN9,
CN10
CN11 (Cranial)
Super cervical ganglion (Sympathetic)
Floor
(hyoids)
Near ear = Facial
Near floor = Trigeminal
Genohyoid
Nerve: Ansa Cervicalis
Mylohyoid
Nerve: Trigeminal, (5c)
Diagastric
(Early 5c)
Anterior belly
Trigeminal, (5c)
Cause dislocation of TMJ with Lateral Pterygoid
Posterior belly
Nerve: Facial Nerve (7)
Stylohyoid
- Nerve: Facial Nerve (7)
Oropharynx
Constrictor
Superior
Middle
Inferior
Longitudinal
(All insert into posterior Thyroid Cartilage)
Palatopharyngeus
Origin: Hard palate
Insertion: Upper border of Thyroid Cartilage
Nerve: Pharyngeal Plexus
Salpingopharyngeus
Open the Eustachian tube
Raise Pharynx & Larynx during deglutition
Origin: Cartilage of tubal elevation
Insertion: Upper boarder of thyroid cartilage
Nerve:
Pharyngeal Plexus
Stylopharyngeus
:
Origin: Styloid Process of Temporal Bone
Insertion: Posterior boarder of Thyroid Cartilage
Nerve: Glossopharyngeal CN9
Tubal Elevation / Eustachian Tube Opening
:
Salphingopharyngeal Fold
Leveator Palatini
(Going into Eustachian) aka Torus Levatorius
Pharynx
into
Middle Ear
Associated Muscles
(
Swallowing / Yawning
)
Tensor Palatini (
Opens Eustachian
by 5c)
Levator Palatini (Doesn't rly open by Plexus)
Salphingopharyngeus (Plexus)
Tensor Tympan (5c)
Boundaries Cavity)
Oral Cavity
Space btwn lips & cheek ext
Oral Vestibule
Between teeth and lips/cheek
Oral Cavity Proper
Internal to teeth
Superior/Roof
: Hard palate (Palatine & Maxilla)
Posterosuperior
: Soft palate
Lateral
: Cheek
Inferior/Floor
: Lingual border mandible
Oropharynx
Palatopharyngeal Fold
Soft Palate
Palatoglossal fold (Boundary)
Obsecure Shit
Piriform Recess
Vallecula
Greater Lesser Palatine Foramen (Lesser Posterior)
Innervation / Blood Supply
Arterial Palate
ECA
Maxillary
Sphenopalatine
Greater palatine
Lesser palatine
Facial
Ascending palatine
Asc. Pharyngeal
Arterial Floor
ECA
Facial
Ascending palatine
Submental
Lingual
Teeth
Arterial Teeth
ECA
Maxillary Artery
Superior Alveolar Arteries
Inferior Alveolar Arteries
Nerves Teeth
Maxillary Teeth
Trigeminal
Maxillary Division
Infraorbital Nerve
Superior Alveolar
Mandibular Teeth
Trigeminal
Mandibular Division
Inferior Alveolar
Nerve Supply
Pharyngeal Plexus
CN10 (Main)
CN9
Superior Cervical Ganglion
CN11 (Cranial)
Miscellanous
Waldeyer's Ring
(1) Pharyngeal Tonsil
(x2) Tubal Tonsil
(x2) Palatine Tonsil
(CN9 & CN5b)
(1) Lingual Tonsil
(CN9)
Tongue
Mandibular Foramen
IAA / IAV / IAN
Salivary Glands
Sublingual Gland
Opening: Near Lingual Frenulum
Submandibular Gland
Opening: Near Lingual Frenulum
Parotid Gland
Opening: Upper 2nd Molar
