Skull Flashcards
Suture between frontal and parietal bones
Coronal
How many cranial bones are there?
Facial?
8
14
Suture between the two parietal bones
Sagittal
Suture between Temporal and parietal bones
Squamosal
Suture between occipital and parietal bones
Lambdoidal
Superior part of the skull
Calvaria
Which bone has the frontonasal suture?
The frontal bone
Which bone makes up the roof of the orbit?
Frontal bone
Situated between the orbits behind the nasal bones
Ethmoid bone
What is the cribriform plate part of?
Ethmoid bone
Which bone is the crista galli part of?
Ethmoid bone
Which bone is the perpendicular plate part of?
Ethmoid bone
Contain the ethmoidal sinuses
Labyrinths
Sides and roof of cranium
Parietal bones
Resembles a bat
Sphenoid bone
Contains the pituitary gland
Sella turcica
Bounds the pituitary gland posteriorly and bears the posterior clinoid process
Dorsum sellae
Flat portion of the occipital bone
Squama
What do the two occipital condyle’s articulate with?
The Atlas
This portion of the occipital bone fuses with the body of the sphenoid
Basilar portion
What exits out of the foramen magnum?
Medulla oblongata
Another name for external occipital protuberance
Inion
What are all of the Temporal bones?
Squamous portion Tympanic portion Styloid process Zygomatic process Mastoid portion Petrous portion Mandibular fossa
Which bone helps make the zygomatic arches?
Temporal bone
Which sinus is not a part of the paranasal sinuses?
Mastoid air cells
Thickest densest bone in the cranium
Petrous ridge
Contains the organs of hearing and balance
Petrous ridges
Look at landmarks and lines
Do it.
Make up the roof of the nasal cavity
Nasal bones
What are the 9(14) facial bones?
Nasal bones Lacrimal bones Maxillary bones Zygomatic bones Palatine bones Inferior nasal conchae Vomer Mandible Orbits
Largest immovable bones of the face
Maxillary bone
Forms lateral walls and floor of nasal cavity
Maxillary bones
Forms 3/4 of roof of mouth
Maxillary bones
Helps form the prominence of cheeks
Zygomatic process of maxillary bones
Where the teeth fit into
Alveolar process
Also called the acanthion
Anterior nasal spine
Temporal process
Zygomatic bones
Forms posterior 1/4 of roof of mouth
Palatine bones
Extend diagonally from the lateral walls of the nasal cavity and curl laterally to give them a scroll-like appearance
Inferior nasal conchae
Processes of the ethmoid bone
The superior and middle nasal conchae
Forms the inferior part of nasal septum
Vomer
Largest facial bone
Mandible
Vertical portions of the mandible
Mandibular rami
Another name for the mandibular angles
Gonion
Articulates with the mandibular fossa of Temporal bone
Mandibular condyle
How many bones is the orbit composed of?
7
Which bones make up the nasal cavity?
Nasal bones
Maxillary bones
Which bones make up the roof of the mouth?
Maxillary bones
Palatine bone
Which bones make up the zygomatic arches?
Zygoma
Temporal bone
Which bones make up the nasal septum?
Vomer
Perpendicular plate of ethmoid
Which bones make up the prominence of the cheeks?
Maxillary bones
Zygomatic bones
What are the 5 positions for facial bones?
Waters-parietoacanthial Reverse waters-acanthioparietal PA axial Caldwell Lateral facial bones Lateral nasal bones
What 4 sinuses make up the paranasal sinuses?
Maxillary
Frontal
Ethmoid
Sphenoid
Communicate with the nasal cavity
Paranasal sinuses
Largest sinus
Maxillary sinus
How many maxillary sinuses are there?
One in each maxilla bone
Sinuses Located in anterior aspect of frontal bone
Frontal sinuses
Sinuses Located within the right and left labyrinths
Ethmoid sinuses
Sinuses Located immediately below the sella turcica
Sphenoid sinuses
