cross sectional chapter 2

corresponding feature of **parietal bone**

sides of cranium

corresponding feature of **occipital bone**

clivus

corresponding feature of **frontal bone**

orbital plate

corresponding feature of **temporal bone**

carotid canal

corresponding feature of **sphenoid bone**

foramen ovale

corresponding feature of **ethmoid bone**

cribriform plate

The largest immovable facial bone is

maxilla

The ____ is formed by the condyloid process, the mandible, and the mandibular fossa of the temporal bone

temporomandibular joint

The maxillary sinuses drain into the

middle nasal meatus

How many sphenoid sinuses are there?

2

The ethmoid bulla is part of the _____

osteomeatal complex

T/F the inner ear is normally fluid filled

true

The ___ is a structure of the inner ear that controls hearing

vestibule

The temporal bone forms part of the

ethmoid, lacrimal, maxilla

The ____ is located in the inferior medial portion of the orbit

lacrimal fossa

Function of the oblique muscle group

rotate the eyeball

Located within the basilar turn of the cochlea is the

round window

The ____ is located at the junction of the brainstem and spinal cord

foramen magnum

The basilar portion of the occipital bone is termed the

clivus

The zygomatic process extends from the

temporal bone

The ____ is shaped like a butterfly and extends across the entire floor of the middle cranial fossa

sphenoid bone

Located on the lateral surface of the ramus is the ______, which elevates the mandible

temporalis muscle

The ____ forms the inferior portion of the bony nasal septum

perpendicular plate

The ___ creates the anterior boundary of the TMJ, preventing forward displacement of the mandibular condyle

articular eminence

The ethmoid notch of the frontal bone articulates with the _____ of the ethmoid bone

cribriform plate

The anterior portion of the sella turcica is termed the _____

tuberculum sellae

One of the largest of the ethmoid air cells (ethmoid sinuses) is the

ethmoid bulla

The greater wings of the sphenoid bone contain 3 paired foramina termed the

rotundum, ovale, spinosum

The articular disk of the TMJ is attached to the medial and lateral surface of the mandibular condyle by the ____

collateral ligaments

anterior ethmoid sinus drainage location

middle nasal meatus

posterior ethmoid sinus drainage location

superior nasal meatus

maxillary sinus drainage location

middle nasal meatus

sphenoid sinus drainage location

sphenoethmoidal recess

frontal sinus drainage location

middle nasal meatus

supraorbital foramen bone

frontal

supraorbital foramen major structure

supraorbital nerve/artery

frontal foramen bone

frontal

frontal foramen major structure

frontal artery and nerve

cribriform plate bone

ethmoid

cribriform plate major structure

olfactory nerve I

foramen rotundum bone

sphenoid

foramen rotunda major structure

maxillary branch of trigeminal nerve

foramen ovale bone

sphenoid

foramen ovale major structure

mandibular branch of trigeminal nerve

foramen spinosum bone

sphenoid

foramen spinosoum major structure

middle meningeal artery

pterygoid canal bone

sphenoid

pterygoid canal major structure

petrosal nerve

optic canal bone

sphenoid

optic canal major structure

optic nerve/ophthalmic artery

superior orbital fissure bone

sphenoid

superior orbital fissure major structure

\-oculomotor nerve III

\-trochlear nerve IV

\-abducens nerve VI

\-ophthalmic branch of trigeminal nerve V

\-ophthalmic vein

inferior orbital fissure bone

maxillary

inferior orbital fissure major structure

maxillary branch of trigeminal nerve

foramen magnum bone

occipital

foramen magnum major structure

medulla oblongata/accessory nerve XI

hypoglossal canal bone

occipital

hypoglossal canal major structure

hypoglossal nerve XII

carotid canal bone

temporal

carotid canal major structure

internal carotid artery

external auditory meatus bone

temporal

external auditory meatus major structure

air in canal conducts sound to tympanic membrane

internal auditory canal bone

temporal

internal auditory canal major structure

vestibulocochlear nerve VIII

facial nerve VII

stylomastoid foramen/facial nerve canal bone

temporal

stylomastoid foramen/facial nerve major structure

facial nerve VII

jugular foramen nerve

occipital

jugular foramen nerve major structure

\-internal jugular vein

\-glossopharyngeal nerve IX

\-vagus nerve X

\-accessory nerve XI

foramen lacerum bone

sphenoid/occipital

foramen lacerum major structure

\-fibrocartilage

\-internal carotid artery

\-pterygoid canal nerve

infraorbital foramen bone

maxillary

infraorbital foramen major structure

\-infraorbital nerve

\-maxillary branch of trigeminal nerve V

lacrimal groove, nasolacrimal canal bone

lacrimal with maxilla

lacrimal groove, nasolacrimal canal major structure

lacrimal sac/nasolacrimal duct

mental foramen bone

mandible

mental foramen major structure

mental artery and nerve

a triangular shaped opening located between the lesser and greater wings that allows for the transmission of the oculomotor, trochlear, abducens, and ophthalmic division of the trigeminal nerves

superior orbital fissure

cranial bones joined together by squamous suture

temporal to parietal

largest fontanel

anterior fontanel

where is the anterior fontanel located?

bregma

til what age does the anterior fontanel remain open?

2

what forms 3/4 of the hard palate?

posterior extension of palatine process of maxilla

what forms 1/4 of the hard palate?

horizontal portion of palatine bones

which cranial bones form the largest portion of the sides of the cranium?

parietal

which cranial bone contains the superior and middle nasal conchae?

ethmoid

the optic canal is separated from the superior orbital tissue by what?

optic strut

a jagged slit that allows the internal carotid artery to enter the cranium

foramen lacerum

the anterior nasal spine is part of which facial bone?

maxillary

which part of the mandible contains the alveolar process

body

strongest muscle of the jaw, arising from the zygomatic arch and inserting on ramus and angle of mandible

masseter

which cranial bones are typically fractures in a basilar skull fracture?

occipital, sphenoid, temporal, ethmoid

why would otorrhea or rhinorrhea be a possible complication of a basilar skull fracture?

leakage of CSF into nasopharynx

which fossa houses the frontal lobes of the brain?

anterior cranial fossa

which fossa houses the pituitary gland, hypothalamus, and temporal lobes of the brain?

middle cranial

which fossa houses the cerebellum and brain stem?

posterior cranial

fossa formed by ethmoid, sphenoid, and frontal bones

anterior cranial

fossa formed by sphenoid and temporal bones

middle cranial

fossa formed by temporal and occipital bones

posterior cranial

forms largest part of the cranium

parietal bone

parietal vertex

superior point of cranium