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What structure do all Facial nerve fibers run through?
Internal Auditory Meatus
What foramen and gland do the motor fibers of Facial nerve pass through?
- Stylomastoid Foramen
- Parotid Gland
What is the innervation of the frontal and occipital bellies of the epicranious respectively?
- Frontal = Temporal branch
- Occipital = Posterior auricular n.
What nerves innervate the Orbicularis Oris?
- Buccal b.
- Marginal mandibular b.
What muscles elevate the upper lip and what is their innervation?
- Levator Labii Superioris
- Levator Labii Superioris Alaeque Nasi
- Zygomatic Minor
- Zygomatic Major
- All innervated by Buccal branch
What are the contents of the Parotid gland?
- Facial Nerve
- External Carotid Artery
- Retromandibular vein
- Parotid Lymph nodes
What nerve supplies presynaptic parasympathetic fibers to the Otic ganglion?
A patient presents with right sided Bell's palsy what side of the face is the lesion on?
What are the muscles of mastication?
- Lateral Pterygoid
- Medial Pterygoid
What nerve innervates the muscles of mastication?
Mandibular branch of Trigeminal (V3)
What is the origin and insertion of the masseter muscle?
- Origin-Zygomatic Arch
- Insertion-Condyloid process and ramus of mandible
What muscle originates at pterygoid plate of sphenoid, palatine, maxillary bones and inserts to the medial surface of ramus of mandible?
What is the only muscle of mastication that depresses the mandibe?
What types of joint is the Temporomandibular joint?
Hinge (ginglymus) type of synovial joint (arthrodial)
What nerve innervates the TMJ?
Auriculotemporal n of V3
What innervates the articular disk of the TMJ?
What is the most common symptom of TMJD?
Clicking (disc displacement with reduction)
What is the most common disc location in TMJD?
Dis anterior to joint articulation
What is the disk location in Open lock TMJD?
Posterior to condyle
What are the four main causes of TMJD?
- Myofascial pai syndrome
- Disc Derangement
- C-spine subluxation
What is Bruxism?
Grinding of the teeth
What bones make up the Temporal Fossa?
- Sphenoid bones
What are the contents of the Temporal Fossa?
- Temporalis m.
- Superficial temporal artery
- Auriculotemporal n.
- Deep temporal arteries and nerves
What are the boundaries of the Infratemporal fossa?
- L: ramus of mandible
- M: Lteral pterygoid plate
- A: Maxilla
- P: Tempoarl bone
- S: Zygomatic arch, GW sphenoid
- I: Medial pterygoid m, angle of mandible
What are the contents of the Infratemporal Fossa (ITF).
- Medial pterygoid m.
- Lateral pterygoid m.
- Inferior temporalis m.
- Mandibular part of maxillary artyer
- Pterygoid part of maxillary artery
- Pterygoid venous plexus
- V3 mandibular branch
- Otic ganglion
- Chorda Tympani
Where is the 3rd part of the maxillary artery found?
Where are the first and second parts of maxillary artery found?
What are the branches of the first part of the maxillary artery?
- Deep Auricular a.
- Anterior Tympanic a.
- Middle meningeal a.
- Accessory meningeal a.
- Inferior aveolar a.
What are the branches of the second part of the Maxillary artery?
- Masseteric a.
- Deep temporal a.
- Pterygoid b.
- Buccal a.
What are the branches of the third part of the maxillary artery?
- Sphenopalatine a.
- Infraorbital a.
- Descending palatine a.
- Artery of the pterygoid canal
- Posterior superior alveolar a.
- Pharyngeal b.
What are the nerves of the ITF?
- Otic ganglion
- Chorda tympani
- Inferior aveolar
What acts as the entry way to the pterygopalatine fossa?
What are the contents of the Pterygopalatine fossa?
- third part maxillary artery
- venous tributaries of pterygoid plexus
- Maxillary branch of trigeminal
- Pterygopalatine ganglion
What are the four ganglion of the head?
What is contained within the vestibule of nostrils?
- sebaceous glands
- Sweat glands
What are the divisions of the mucosa?
- inferior 2/3 is respiratory
- posterior superior 1/3 olfactory
What is the gateway between the nasal cavity and nasopharynx?
What structures drain to the superior nasal meatus?
- posterior ethmoid air cells
- Sphenoid sinuses
What drains into the inferior nasal meatus?
lacrimal fluid from nasolacrimal duct
Which nasal meatus is the largest?
Inferior nasal meatus
What area of is know for nose bleeds?
What is the largest sinus?
What is the only sinus present at birth?
What innervates the maxillary sinus?
superior aveolar nerve
What are the two parts of the oral cavity and where are they located?
- Vestibule: between lips/cheeks and gums
- Oral cavity proper: internal teeth row occupied by tongue
Describe the four types of lingual papillae?
- Fungiform- mushroom shape at apex and margins
- Filiform- smalles, cone shaped, covers most of the superior surface of tongue
- Vallate- large circular v shaped row seperating anterior 2/3 and post. 1/3
- Foliate- located at margins (folds)
What are the four extrinsic muscles of the tongue?
What extrinsic muscle of the tongue is not innervated by CN XII and what is it innervated by?
Palatoglossus (CN X)
What nerve carries general sensation from the anterior 2/3 of the tongue?
Lingual nerve (branch of V3)
What nerve carries taste from the anterior 2/3 of the tongue?
Chorda tympani (CN VII)
What nerves carry general sensation and taste from the posterior 1/3 of the tongue?
What salivary gland is the largest and which one produces the most saliva?
- Largest - Parotid
- Most saliva - Submandibular
What are the three salivary glands?
How many molars, premolars, canines, and incisors are in each quadrant?
- 3 molars
- 2 premolars
- 1 canine
- 2 incisors
What type of joint does the aveolar bone have?
Where are the pressoreceptive nerve endings for the teeth?