Exam 4 LAB Flashcards
- hypoglossal canal
- tympano-occipital fissure
of the occipital bone
jugular foramen
tentorial process (covers cerebellum)
canal for trigeminal nerve
RED: jugular foramen
YELLOW: internal acoustic meatus
BLUE: canal for trigeminal n
what passes through the Tympano-occipital fissure
- Glossopharyngeal n. (CN IX)
- Vagus n. (CN X)
- Accessory n. (CN XI)
- Internal carotid a.
- Internal jugular v
difference between foramina and fissure
foramina= 1 bone with a hole in it
fissure= space between 2 bones
what passes through the Jugular foramen
- Glossopharyngeal n. (CN IX)
- Vagus n. (CN X)
- Accessory n. (CN XI)
what passes through the Internal acoustic meatus
- Facial n. (CN VII)
- Vestibulocochlear n. (CN VIII)
- petrosal part
- internal acoustic meatus
stylomastoid foramen
what passes through the styloid foramen
facial nerve (CNVII)
- stylomastoid
- external acoustic meatus
- retroarticular foramen
- tympanic bulla
oval foramen
what passes through the oval foramen
3rd branch of trigeminal nerve mandibular n (CNV-3)
- preshenoid bone
- hypophyseal fossa in basiphenoid bone
- basisphenoid bone
- dorsum sallea
orbital fissure
what passes through the orbital fissure
what is this?
what passes through it
round foramen
2nd branch of trigeminal nerve, maxillary n. (CNV-2)
what is this?
what passes through it?
optic canal
optic n (CN II)
what is this
what passes through it
alar canal
second branch of trigeminal n., Maxillary n. (CNV2)
frontal sinus
perpendicular plate
chiasmatic groove
vomer
- cribiform plate
- ethmoidal labyrinth
what passes throught the cribiform plate
olfactory nn (CN I)
vomernasal nn. (CN I)
lacrimal bone (fossa for the lacrimal sac)
infraorbital canal
what passes through the infraorbital canal
infraorbital nn.
superior alveolar nn. branches of maxillary n. (CNV2)
Infraorbital foramen: Relate this foramen with the ___________tooth
upper 4th PM tooth
Maxillary foramen: Observe this foramen in the ________ fossa
Pterygopalatine fossa
nasal bone
infraorbital foramen
maxillary foramen
what are these structures
what passes through them
1.caudal palatine foramen- major palatine nerve br. of maxillary n. (CNV2)
- sphenopalatine foramen- caudal nasal n. br of maxillary n. (CNV2)
what are these structures
what passes through them
- major palatine foramen
- minor palatine foramen
major palatine n. br. of maxillary (CNV2)
what is this
what passes through this
mandibular foramen
inferior alveolar n. br of maxillary (CNV3)
lateral view:
what is this
what passes through this
mental foramina
mental nn. branches of inferior alveolar n. (CNV3)
what is the line on?
what is the arrow pointing to?
line: arbor vitae
arrow: cerebellum
folias
what is the blue around?
label the yellow dot
label the red dot
blue: telencephalon
red: diencephalon