Deep Face Flashcards
2 fossae of temporal region/deep face
temporal and infratemporal
temporal fossa location
superior to zygomatic arch
temporal fossa contents
temporalis muscle
infratemporal fossa location
deep and inferior to zygomatic bone
infratemporal fossa contents
pterygoids, mandibular nerve, maxillary vessels
muscles of mastication are derived from
first pharyngeal arch
first pharyngeal arch derivatives are innervated by
mandibular nerve
TMJ is articulation between
temporal bone and mandibular condyle
which muscles elevate the mandible
temporalis, masseter, medial pterygoid
which muscles protract the mandible
lateral pterygoid
which muscles depress the mandible
lateral pterygoid, digastric, mylohyoid, geniohyoid
which muscles retract the mandible
temporalis, masseter
which muscles perform lateral movement of mandible
medial and lateral pterygoids
temporalis muscle origin and insertion
temporal fossa, coronoid process of mandible
temporalis muscle innervation
deep temporal nerves
temporalis muscle blood supply
deep temporal arteries (branches of maxillary artery)
contents of infratemporal fossa
insertion of temporalis, pterygoids, mandibular nerve, chorda tympani nerve, otic ganglion, maxillary artery, pterygoid plexus of veins
origin of medial pterygoid
medial side of lateral pterygoid plate
origin of lateral pterygoid
lateral side of lateral pterygoid plate
insertion of medial pterygoid
lower internal mandibular ramus
divisions of mandibular nerve
anterior and posterior
anterior division of mandibular nerve ends as
buccal nerve
at what point does anterior division of mandibular nerve turn into buccal nerve
lateral pterygoid muscle
branches of anterior division of mandibular nerve
deep temporal nerves, nerves to masseter and lateral pterygoid
branches of posterior division of mandibular nerve
lingual, inferior alveolar, nerve to mylohyoid, auriculotemporal
lingual nerve is joined by what nerve
chorda tympani
chorda tympani arises from what cranial nerve
facial (VII)
type and function of chorda tympani nerve
preganglionic parasympathetic that synapses in submandibular ganglion to innervate submandibular and sublingual glands
which nerve is just posterior to lingual nerve
inferior alveolar
what does the inferior alveolar nerve pass through to get into mandible
mandibular foramen
what does inferior alveolar nerve travel with
inferior alveolar artery (branch of maxillary artery)
otic ganglion location
medial aspect of V3 (mandibular nerve) as it exits foramen ovale
what travels with auriculotemporal nerve
postganglionic parasympathetic fibers from CN IX (glossopharyngeal) from otic ganglion to parotid gland
course of maxillary artery
from posterior to neck of mandible through infratemporal fossa to pass through pterygopalatine fossa, then crosses either external or deep surface of lateral pterygoid
branches of maxillary artery
middle meningeal, inferior alveolar, branches to muscles of mastication, buccal, sphenopalatine
middle meningeal artery enters the middle cranial fossa via
foramen spinosum
course of sphenopalatine artery
enters posterior nasal cavity
3 regions of nasal cavity
nasal vestibule, respiratory region, olfactory region
nasal cavity region containing hair
nasal vestibule
nasal cavity region containing thick mucosa
respiratory region
nasal cavity region containing filaments of olfactory nerve
olfactory region
nasal septum is formed by
vomer and perpendicular plate of ethmoid
anterior border of nasal septum formed by
septal cartilage
what covers nasal septum
respiratory mucosa
choana
posterior nasal aperture through which air passes to the nasopharynx
nasal chonchae
3 protrusions (superior, middle, inferior) of the ethmoid bone from the lateral wall of the nasal cavity
what lies below each nasal choncha
nasal meatus
what lines paranasal sinuses
respiratory mucosa
sphenoid sinus drains into
sphenoethmoidal recess
ethmoid sinus drains into
superior and middle meatuses
frontal sinus drains into
middle meatus
maxillary sinus drains into
middle meatus
nasolacrimal duct drains into
inferior meatus
ophthalmic nerve in nasal cavity
general afferent, anterior/posterior ethmoid nerves
maxillary nerve in nasal cavity
general afferent, small nasal branches, nasopalatine nerve
arteries contributing blood supply to the nose
ophthalmic, maxillary, facial
branches of ophthalmic artery in nasal cavity
anterior/posterior ethmoid arteries
branches of maxillary artery in nasal cavity
sphenopalatine artery, septal branches, greater palatine
branches of facial artery in nasal cavity
lateral nasal, septal branch, superior labial
common areas of epistaxis
vestibule, anteroinferior aspect of nasal septum
anteroinferior aspect of nasal septum aka
Kiesselbach’s area
common etiology of epistaxis
trauma to septal branch of superior labial artery (from facial artery)
oral vestibule
space between teeth and lips or cheeks
sections of the mouth
oral vestibule and oral cavity proper
palatine tonsils
paired collections of lymphoid tissue guarding the oropharynx
palatine tonsils location
between palatoglossal and palatopharyngeal folds
hard palate
bony anterior 2/3 of palate
hard palate consists of
palatal process of maxilla and horizontal process of palatine bone
soft palate
muscular posterior 1/3 of palate
soft palate function
closes off the nasopharynx during swallowing
innervation of muscles of tongue
hypoglossal nerve CN XII
3 extrinsic skeletal muscles of the tongue
genioglossus, hyoglossus, styloglossus
genioglossus action
depresses and protrudes the tongue
hyoglossus action
retracts the tongue during swallowing
styloglossus action
retracts the tongue during swallowing
palatoglossus innervation
vagus nerve
palatoglossus action
elevates the tongue
palatoglossus is grouped with
muscles of the palate
blood supply to tongue
lingual artery from external carotid artery
5 cranial nerves that supply innervation to the tongue
lingual (mandibular/trigeminal), chorda tympani (facial), glossopharyngeal, vagus, hypoglossal
lingual nerve function
sensory to anterior 2/3 of tongue
chorda tympani function (tongue)
taste to anterior 2/3
glossopharyngeal nerve function (tongue)
taste and sensory to posterior 1/3
vagus nerve function (tongue)
sensation and taste to base of tongue in epiglottal region
branch of vagus nerve providing sensory and taste to base of tongue
internal branch of superior laryngeal nerve
hypoglossal nerve function
motor to intrinsic and extrinsic muscles of tongue
the only muscle of tongue not innervated by hypoglossal nerve
palatoglossus (vagus nerve)
parotid type of gland
serous
parotid gland innervation preganglionic
parasympathetic, lesser petrosal nerve (branch of CN IX)
parotid gland innervation ganglion
otic ganglion
parotid gland innervation postanglionic
parasympathetic fibers associated with auriculotemporal nerve, branch of CNV3
parotid gland secretes via
parotid (Stensen’s) duct
submandibular gland type
seromucus
submandibular gland innervation ganglion
submandibular ganglion
submandibular gland innervation
parasympathetics of chorda tympani (CN VII) travel with lingual nerve (CN V3)
submandibular gland secretes via
submandibular (Wharton’s) duct
sublingual gland type
largely mucus
sublingual gland innervation
same as submandibular gland
sublingual gland secretes via
small ducts in sublingual fold
lower boundary of pharynx
cricoid cartilage
lower boundary of nasopharynx
soft palate
lower boundary of oropharynx
epiglottis
laryngopharynx aka
hypopharynx
muscles of pharynx
superior, middle, inferior pharyngeal constrictors
muscles of pharynx action
swallowing (deglutition) by serially contracting from superior to inferior
pharynx blood supply
branches of thyrocervical trunk from subclavian artery (especially ascending cervical branch), external carotid artery (superior thyroid, facial, ascending pharyngeal, maxillary)
sensory innervation of nasopharynx
pharyngeal branch of CN V2
sensory innervation of oropharynx
CN IX
sensory innervation of laryngopharynx
CN X
exception to sensory innervation of laryngopharynx
stylopharyngeus muscle is innervated by CN IX
afferent gag reflex provided by
CN IX
efferent gag reflex action and innervation
CN X, soft palate elevated, epiglottis closes, pharyngeal muscles constrict, tongue moves out
regions of larynx
supraglottic, glottic, infraglottic
supraglottic aka
vestibule or false vocal cords
glottic aka
ventricle or true vocal cords
infraglottic aka
subglottic
the regions of larynx are divided by
mucosal folds (vestibular fold is superior and vocal fold inferior)
what are vocal cords
vocal ligaments covered by mucosa
only laryngeal muscles to abduct vocal cords
posterior cricoarytenoids
laryngeal cartilages are moved by
laryngeal muscles
laryngeal cartilages are connected by
elastic ligaments
tension and position of vocal ligaments are affected by
movement of laryngeal cartilages
opening between vocal folds
rima glottidis
position of rima glottidis during quiet respiration
open
position of vocal folds when rima glottidis is open
abducted
position of rima glottidis during swallowing
closed (vocal folds adducted)
position of epiglottis during swallowing
swings downward to close laryngeal vestibule
position of rima glottidis during speech
closed
motor and sensory innervation of larynx (general) is provided by
vagus nerve
motor nerve to cricothyroid
superior laryngeal branch of vagus nerve
sensory nerve to mucosa above vocal folds
superior laryngeal branch of vagus nerve
superior laryngeal branch of vagus nerve function
motor to cricothyroid, sensory to mucosa above vocal folds
motor nerve to all laryngeal muscles except cricothyroid
recurrent laryngeal branch of vagus
sensory nerve to mucosa below vocal folds
recurrent laryngeal branch of vagus
recurrent laryngeal branch of vagus functions
motor to all laryngeal muscles except cricothyroid, sensory to mucosa below vocal folds
common insertion of all pharyngeal muscles
pharyngeal raphe
larynx spinal level
C3-C6
all mandibular depressors are innervated by CN V3 except
Genohyoid (cervical plexus C1)
mandibular elevators are innervated by
CNV3