Skull Flashcards
Protective housing of the brain
Skull/calvarium
How many bones of skull
22
There is where the frontal sinus is located and serves as the roof of the orbit
Frontal bone
How many cranial bone and facial bone in frontal bone
4 cranial bones, 8facial bones
Largest portion of the cranium
Parietal bone
How many articulate in cranial bone in parietal bone
5
Inferoposterior part of the cranium located in foramen Magnum 5 cranial bone
Occipital bone
location of Pars Petrosa or Petrous Pyramid that
houses the organ of hearing and balance
Temporal Bone
What is the location of temporal bone
TM FOSSA/temporomandibular fossa
the smallest among the cranial bones of the skull.
Ethmoid Bone
Articulates w/ 2 cranial and 11 facial bones
Ethmoid Bone
batshape
Sphenoid Bone
What is the location of sphenoid bone
Sella Turcica/ Turkish Saddle
How many cranial and facial bone in Sphenoid bone
7 cranial bones, and 5 facial bones
The bones of the cranial vault are composed of two plates of
compact tissue separated by an inner layer of spongy tissue called
Diploe
The articulations or joints of the cranium
Sutures
separates the frontal bone from the two
parietal bones
Coronal sutures
separating the two parietal bones in
the midline
Sagittal suture
separates the two parietal bones from
the occipital bone
Lambdoidal Suture
are formed by the inferior junctions of
the two parietal bones with their respective temporal
bones
Squamosal Sutures
The anterior end of the sagittal suture.
Bregma
The posterior end of the sagittal suture
Lambda
are points posteriorto the ear where the
squamosal and lambdoidalsutures meet.
Asterions
are points at the junction of the parietals,
temporals, and the greater wings of the sphenoid.
Pterions
are membrane-covered openings or “soft spots.”
Fontanels
Provide structure,shape, and support for the face. They also
form a protective housing for the upper ends of the respiratory
and digestive tracts
Facial bone
How many facial bone
14
Maxillae - 2
Zygomatic Bones – 2
Mandible - 1
Nasal Bones - 2
Lacrimal Bones – 2
Inferior Nasal Conchae – 2
Vomer -1
Palatine- 2
Facial bone
the largest immovable bones of the face.
- This is where the Antrum of Highmore is located.
Maxillary Bones
form the prominence of the
cheek (Zygoma / Malar Bone)
Zygomatic Bones
bridge of the nose
Nasal
Smallest facial bones
Lacrimal Bones
“turbinates”
- Scroll shape
Inferior Nasal Conchae
L Shape
Palatine Bones
plowshare
- Inferior part of the nasalseptum
Vomer
the largest and densest facial bone.
- The only movable bone in adult skull.
Mandible
