deck_2622311 Flashcards
Unpaired, Single bone that extends completely across the skullResembles a butterfly
Sphenoid
Provide openings through which nerves and blood vessels communicate in the eyes
superior and inferior orbital fissures
Contains duct that carries tears from eyes to nasal cavity
nasolacrimal canal
Divides nasal cavity into left and right
Nasal septum
Increase surface area in the nasal cavity
nasal conchae
Central region of sphenoid boneSaddle-likeContains pituitary gland
sella turcica or hypophyseal fossa
Bone through which the spinal cord joins the brain
foramen magnum
Smooth points of articulation between skull and vertebral column
occipital condyle
Where the muscles involved in moving tongue, hyoid bone, and pharynx originate
styloid processes
Where mandible articulates with temporal bone
Mandibular fossa
U-shaped boneNot part of the skullNo direct bony attachment to the skullProvides attachment for some tongue muscles, neck muscles
hyoid bone
All vertebral foramina joined together
vertebral canal
Enlargement posterior to the ear; attachment site for several muscles that move the head
mastoid process
Forms lateral wall of skull
parietal
External canal of the ear; carries sound to the ear
External auditory meatus
Contains the middle and inner ear and the mastoid air cellsPlace where the mandible articulates with the rest of the skull
temporal bone
Forms the forehead and roof of the orbitContains the frontal sinus
frontal
Opening through which a major arteryto the meninges (membranes aroundthe brain) enters the cranial cavity
foramen spinosum
Contains the sphenoidal sinus
sphenoid bone
Forms the base of the skull
occipital
Forms the prominence of the cheekForms the anterolateral wall of the orbit
zygomatic bone
Forms part of the nasal septum and part of the lateral walls and roofof the nasal cavityContains the ethmoidal labyrinth, or ethmoidal sinuses. The labyrinthis divided into anterior, middle, and posterior ethmoidal cells.
ethmoid bone
Attachment for meninges (membranesaround brain)
crista galli
Contains numerous olfactory foraminathrough which branches of the olfactorynerve (cranial nerve I) enter the cranialcavity from the nasal cavity
cribriform plate
Forms the superior portion of the nasalseptum
perpendicular plate of ethmoid
Ridge extending into the nasal cavity;increases surface area, helps warm andmoisten air in the cavity
nasal conchae
Contains the maxillary sinus and maxillary teethForms part of nasolacrimal canal
maxilla
Forms the anterior two-thirds of the hard palate
palatine process
Helps form part of the hard palate and a small part of the wallof the orbit
palatine bone