Nasal Cavity 2 Flashcards
Pterygopalatine Fossa is bounded Superiorly by?
body of the sphenoid
Pterygopalatine Fossa is bounded Medially by?
palatine bone
Pterygopalatine Fossa is bounded Posteriorly by?
pterygoid process and greater wing of the sphenoid
Pterygopalatine Fossa is bounded Anteriorly and Inferiorly by?
the maxilla
What sits in the Pterygopalatine Fossa?
Pterygopalatine Ganglion
Nerve of Pterygoid Canal enters the _____ fossa and runs into the _____ aspect of the Pterygopalatine Ganglion (PPG)
pterygopalatine; posterior
The Nerve of Pterygoid canal has ______ fibers (VII) that synapse in the ganglion and ______ fibers
preganglionic parasympathetic; postganglionic sympathetic
_____ is a communicating branch to Pterygopalatine Ganglion.
Maxillary N.
What 3 nerves branches of Maxillary provide sensory to teeth?
- Posterior superior alveolar
- Middle superior alveolar
- Anterior superior alveolar
Which 2 nerves branches of maxillary provides sensory to the face?
zygomaticotemporal and zygomaticofacial
Communicating branches to lacrimal nerve (V1) from Maxillary carries what types of fiber classification to the lacrimal gland?
Postganglionic sympathetics and postganglionic parasympathetic
Maxillary nerve runs through _____ groove and exits the _____ foramen as the infraorbital N.
infraorbital
From Pterygopalatine Ganglion (PPG): What nerves innervates the oral cavity?
Greater and lesser palatine nerves
Greater and lesser palatine nerves have to travel through what to get to the oral cavity?
Palatine canal
What is the fiber classification of Greater and lesser palatine nerves?
Sensory, postganglionic parasympathetic, and PostG. Sympathetis
From Pterygopalatine Ganglion (PPG): What nerves innervates the nasal cavity?
Lateral nasal nerves and septal nerves
What does the Lateral nasal and septa nerves have to travel through what to get to the nasal cavity?
Sphenopalatine foramen
What is the fiber classification of the Lateral nasal and septal nerves?
Sensory, postganglionic parasympathetic, and PostG. Sympathetis
What are the nerves from Pterygopalatine Ganglion (PPG)? (5)
- Greater palatine nerve
- Lesser palatine nerve
- Nasopalatine nerve
- Lateral nasal nerve
- Pharyngeal branch
Which nerve of Pterygopalatine Ganglion (PPG):
Travels in palatine canal and exits out the greater palatine foramen
Greater Palatine Nerve
What does the greater palatine nerve supply?
Sensory to hard palate, sympathetic and para sympathetic to hard palate, palatine glands
Which nerve of Pterygopalatine Ganglion (PPG):
Travels in palatine canal and exits out the lesser palatine foramen
Lesser Palatine Nerve
What does the Lesser Palatine Nerve supply?
Supplies sensory to soft palate, sympathetic and para sympathetic to soft palate, palatine glands
Which nerve of Pterygopalatine Ganglion (PPG): Travels through the sphenopalatine foramen to the nasal septum?
Nasopalatine nerve
Nasopalatine nerve carries what types of fibers?
carries sensory, sympathetic,
and parasympathetic
Which nerve of Pterygopalatine Ganglion (PPG): travels through the sphenopalatine
foramen to the lateral nasal wall?
Lateral nasal nerve
Lateral nasal nerve carries what type of fibers?
carries sensory, sympathetic, and parasympathetic
Which nerve of Pterygopalatine Ganglion (PPG) go to the Nasopharynx?
Pharyngeal branch
Pharyngeal branch carries what types of nerve fibers to the nasopharynx?
Sensory, sympathetic, and parasymp.
Pterygopalatine fossa has 6 openings that connect it to other regions:
-lateral opening through which the maxillary artery -Connects to Infratemporal Fossa.
Which opening?
Pterygomaxillary fissure
Pterygopalatine fossa has 6 openings that connect it to other regions:
-Medial opening between PPF and nasal cavity. Sphenopalatine artery, lateral nasal nerves and nasopalatine nerve(s) run through this foramen.
-Connects to Nasal Cavity
Which opening?
Sphenopalatine foramen
Pterygopalatine fossa has 6 openings that connect it to other regions:
–maxillary division of trigeminal leaves the skull and runs superior in
the fossa
-Connects to Middle Cranial Fossa
Which opening?
Foramen rotundum
Pterygopalatine fossa has 6 openings that connect it to other regions:
- V2 passes anteriorly from the PPF to the orbit through and terminates as the infraorbital nerve.
-Connects to Orbit.
Which opening?
Inferior orbital fissure
Pterygopalatine fossa has 6 openings that connect it to other regions:
- greater and lesser palatine nn. and descending palatine a. run inferiorly
from PPF to hard palate through this canal
-Connects to Oral Cavity and Pharynx
Which opening?
Palatine canal
Pterygopalatine fossa has 6 openings that connect it to other regions:
- n. and a. of pterygoid canal traverse this structure to enter the PPF
posteriorly, carrying secretomotor and sympathetic fibers
Which opening?
Pterygoid canal
What are the 3 nerve supply to the nasal cavity- lateral wall?
- Anterior ethmoidal nerve
- Branches from pterygopalatine ganglion
- Olfactory nerves
Nasal cavity- Lateral wall: Which nerve is from V1, sensory innervation to anterior region (several smaller branches off this nerve)?
Anterior ethmoidal nerve
Nasal cavity- Lateral wall: Which nerve supplies sensory (from V2), parasympathetic (secretomotor) from CN VII (these fibers originate from greater petrosal n.), and sympathetic (vasoconstriction) to the majority of the lateral wall (enters nasal cavity through sphenopalatine foramen)?
Branches from pterygopalatine ganglion
Nasal cavity- Lateral wall: Which nerve go to olfactory epithelium of superior-most portion of lateral wall (for sense of smell – CN I)?
Olfactory nerves
What are the 3 nerves that supply the nasal cavity- Septum?
- Anterior ethmoidal nerve
- Nasopalatine nerve
- Olfactory nerves
Nerves that supply the nasal cavity- Septum:
-from V1, sensory innervation to anterior region
Anterior ethmoidal nerve
Nerves that supply the nasal cavity- Septum:
- After innervating the septum, this nerve traverses the incisive canal and then helps to innervate the anterior aspect of the hard palate, meets Greater Palatine nerve
Nasopalatine nerve
Nerves that supply the nasal cavity- Septum:
- to olfactory epithelium of superior-most portion of nasal septum (for sense of smell)
Olfactory nerves
What 3 structures passes through Sphenopalatine foramen/canal?
Sphenopalatine artery, lateral nasal nerves and nasopalatine nerves
Descending (Greater) palatine artery:
• Passes down the _____ canal and then branches
• Greater Palatine Artery (hard palate) and Lesser Palatine Artery (soft palate)
• Exit the palatine bone through the same named foramen with the nerves (Sphenoid canal)
-palatine
Which artery?
- Passes through the Sphenopalatine foramen and then branches
- Gives rise to Lateral Nasal Arteries and Septal Arteries (Septal A. anastomose with Greater Palatine A.)
Sphenopalatine Artery
What are the 3 arteries found within the lateral wall of the nasal cavity?
Ophthamlic, maxillary, and facial arteries.
Lateral (wall) Nasal branches of the Anterior and posterior ethmoidal arteries are branches of which artery?
Ophthalmic artery
Lateral (wall) Nasal branches of the Sphenopalatine artery is a branch of which artery?
Maxillary artery
Nasal septum:
Which artery gives rise to anterior and posterior ethmoidal arteries?
Ophthalmic artery
Nasal septum:
Which artery gives rise to sphenopalatine artery?
Maxillary artery
Nasal septum:
Which artery gives rise to Superior labial artery?
Facial artery
_____ area is located in the anterior part of the nasal septum, in a location where many of the arteries supplying the septum anastomose.
Kiesselbach’s
______ is relatively common because of the rich blood supply to nasal mucosa. In most cases the cause is trauma due to its location in the soft septal cartilage.
Episatxis (nose bleed)
