Cranium and facial bone Flashcards
How many bones in the Cranium?
8
How many bones in the Facial?
14
What are the cranium bones?
P E S T OF 8
How many bones make up the floor of the skull?
R and L Temporal bones, ethmoid, and sphenoid
how are the majority of the cranial bones classified?
Flat bone
what bone does glabella and supraorbital groove belong to?
Frontal bone
Smooth raised prominence between the eyebrows just above the bridge of the nose is called….
Glabella
what frontal bone feature corresponds to the floor of anterior fossa of cranial vault?
Supraorbital groove
what part of the frontal bone provide a spot for ethmoid bone to attach to?
Ethmoid notch
how many cranial bones does frontal bone articulate with? what are they?
4, R and L Parietal, Sphenoid, ethmoid
How many facial bones does the frontal bone articulate with? what are they?
8 r and left nasal, r and left zygoma, r and left lacrimal, right and left maxilla
Where is the widest portion of the skull?
Parietal tubercles
how mane bones do each parietal bone articulates with? and what are they?
5, Frontal, occipital, temporal, sphenoid, the other parietal bone
Prominent bump or protuberance at the inferoposterior portion of the skull describes …
Inion
What feature does the foramen magnum belong to?
Occipital bone
where does the Atlas bone articulate with the occipital bone?
Occipital Condyle
How many bones does the occipital bone articulate with? What are they?
6, 2x Parietal bones, Sphenoid, 2x temporal, atlas
What bone houses delicate organs of hearing and balance?
Temporal bones
How many divisions does the temporal bone have?
3
Squamous, Mastoid, and Petrous are the divisions of…
Temporal bone
What is the most vulnerable portion of the entire skull to fracture because of its’ thinness?
Temporal bone
zygomatic arch and process belong to…
Temporal bone
EAM belongs to what cranial bone?
Temporal bone
Temporomandibular is ______ to EAM and is a ______ where mandible sits
Anterior, depression
Petrous Pyramid belongs to _____ of the ____ bone
Petrous division of the Temporal bone
What houses the organs of hearing and equilibrium including mastoid air cells?
Petrous portion
what is the thickest and densest bone of the cranium
Petrous Pyramid
Project anteriorly and toward the midline from the area of the EAM describes…
Petrous Pyramid
An important external landmark corresponds to petrous pyramid, what is this landmark?
TEA
what other cranial bones do the temporal bone articulate with?
Parietal, occipital, and sphenoid
What 2 facial bones does the temporal bone articulate with?
Zygoma and Mandible
what bone is centrally located and forms the anchor for all 8 cranial bones?
Sphenoid bone
what are all the parts of the sphenoid bone?
Greater wings, lesser wings, sella turcica, Dorsum Sellae, clivus, posterior process, anterior process
What structure is a home for pituitary gland?
Sella Turcica of the sphenoid bone
Optic groove and optic canal belongs to which portion of the sphenoid bone?
anterior
how many bones does the sphenoid bone articulate with? and what are they?
7, frontal, ethmoid, 2x temporal, 2x parietal, occipital
what 5 facial bones does the sphenoid bone articulate with?
2x palatine, 2x zygomatic, vomer
what are the parts of the ethmoid bone?
Crista Galli, Cribriform plate, perpendicular plate, labyrinth, and Superior nasal Concha
which part of the ethmoid bone contains many small openings for segments branches of olfactory nerves to pass?
Cribriform plate
What part of the ethmoid bone contains the ethmoid air cells or sinuses?
Labyrinths
Ethmoid articulates with 2 cranial bones, what are they?
Frontal and Sphenoid
how many facial bones does the ethmoid articulate with? what are they?
11,
2x Maxilla, 2x lacrimal, 2x nasal, 2x inf nasal conchae, 2x palatine bones, Vomer
