pterygopalatine fossa

Question 1

boundaries of pterygopalatine fossa

Answer 1

anteriorly: maxilla
posteriorly: root of pterygoid process with a anterior surface of greater wing of sphenoid
medial: perpendicular plate of palatine bone with orbital and sphenoidal process
laterally: infratemporal fossa and pterygomaxillary fissure
superior: undersurface of body of sphenoid
inferior: pyramidal process of the of palatine bone

Question 2

COMMUNICATIONS: anteriorly

Answer 2

orbital through medial part inferior orbital fissure

Question 3

COMMUNICATIONS: posteriorly

Answer 3

with middle cranial fossa through foramen rotundum
foramen lacerum through pterygoid canal
pharynx through palatovaginal canal

Question 4

COMMUNICATIONS: middle

Answer 4

with nose through sphenopalatine foramen

Question 5

COMMUNICATIONS: laterally

Answer 5

infratemporal fossa through pterygomaxillary fissure

Question 6

COMMUNICATIONS: inferiorly

Answer 6

to oral cavity through greater and lesser palatine canal

Question 7

contents of pterygopalatine fossa

Answer 7

maxillary artery with branches
maxillary nerve and its two branches
posterior superior alveolar and orbital
pterygopalatine ganglion with fibers of maxillary nerve and autonomic nerves

Question 8

maxillary nerve

Answer 8

arises from trigeminal ganglion
moves across the lateral wall of cavernous sinus leaves middle cranial fossa through foramen rotundum and crosses upper part of pterygoid fossa and continues as infraoribital

Question 9

zygomatic terminal brances

Answer 9

2
zygomaticofacial
zygomaticotemporal

Question 10

another branch that goes off from zygomaticotemporal

Answer 10

communicating branch of lacrimal nerve that as secretomotor fibers to lacrimal glands

Question 11

zygomatic nerve enters what thorugh what

Answer 11

orbit through lateral part of infrerior orbiral fissure

Question 12

infraoribital nerve course

Answer 12

branch of maxillary nerve
enters in the orbit through inferior orbital fissure
runs on the floor of the orbit and roof of maxillary sinus
then enter the infra oribital canal and then infra oribiral foramen

Question 13

branches and it is accompanied by

Answer 13

palpebral
nasal
labial
accompanied by infraorbital branch of 3rd part of maxillary artery and the accompanying vein

Question 14

middle superior alveolar nerve

Answer 14

comes off from the inferior orbital fissure

runs on the lateral wall of maxillary sinus and supplies upper premolars

Question 15

anterior superior alveolar nerve

Answer 15

comes off from infra orbital canal runs through sinuous canal through anterior wall of maxillary sinus and supplies the upper incisors canine and anterior inferior part of nasal cavity

Question 16

features of pterygopapaltine ganglion

Answer 16

largest parasympthateic peripheral ganglion
act as relay station for secretomotor fibers to lacrimal gland and mucous glands of nose, palatine, pharynx and paranasal sinus

Question 17

parasympathetic root of the ganglion is made by

Answer 17

nerve of pterygoid canal

Question 18

preganglionic fibers of the ganglion arises from ( whole course) from neurons present in

Answer 18

superior salivatory, lacrimatory nuclei, nervus intermedius, facial nerve, geniculate ganglion , greater petrosal nerve, and nerve of pterygoid canal to reach ganglion

Question 19

synpathetic root of the ganglio is derived from

Answer 19

the nerve of pterygoid canal

Question 20

postganglionic of sympathetic root arises from

Answer 20

superior cervical sympathetic ganglion, internal carotid plexus, deep petrosal, nerve of pterygoid canal to the ganglion

Question 21

sensory root of ganglion comes from

Answer 21

maxillary nerve

Question 22

branches of maxillary nerve in ganglio

Answer 22

orbital
nasal
palatine
lacrimal
pharyngeal

Question 23

orbital branch

Answer 23

supplies perosteum of orbit and orbital involuntary muscles

enters through inferior orbital fissure

Question 24

palatine branches

Answer 24

greater palatine through greater palatine canal supplies hard palate and labial aspect
lesser palatine through lesser palatine canal supplies soft palate and tonsils

Question 25

nasal branches

Answer 25

lateral posterior superior nasal branch supplies posterior part of superior and middle conchae
medial posterior nasal branch supplies posterior part of roof or nose and nasal septum
nasopalatine transmits through incisive foramen

Question 26

pharyngeal branch

Answer 26

enters through palatino vaginal canal and supplies nasopharynx