Cranium Flashcards
Facial bones how many
14
Skull cap aka
Calvarium
What are the bones of the Calvarium
Frontal
Rt/ lt parietal
Occipital
Bones that make up the floor of the cranium
Ethmoid
Sphenoid
2 temporal bones
Landmarks of frontal bone
Glabella 3rd eye Superciliary ridge/arch under brow Supraorbital margin SOM Supraorbital groove Frontal tuberosity
Cranium how many bones
8
Name the sutures
Coronal, Squamosal, Lambdoidal, Saggital
The junction between the coronal and Sagittal sutures is
Bregma
The junction between the Lambdoidal and Saggital sutures
Lambda
The junction of the occipital, parietal, and mastoid portion of the temporal bone
Asterion
The junction of the parietal bone, Squamosal suture, and greater wing of the sphenoid is
Pterion
Names of the fontanels/ fontanelles
Anterior, Posterior, Sphenoidal, Mastoid
Where are olfactory Foramen
In cribriform plate
What do the superior and middle nasal concha do
Warm the air we breathe
Makes up a portion of the nasal septum
Perpendicular plate
Pituitary gland sits where
Sella turcica
Pituitary gland aka
Hypophysis
Organs of hearing and balance are contained in there
Petronius portion of temporal bone
What type of joints are adult sutures?
Fibrous joints, synarthroidal
What are the functions of fontanelles
Let’s skull move through birth canal, allows for growth
When doe fontanelles start to close and when are the completely fused
18 months and around 11,12,13 years old.
Which fontanelle is biggest
Anterior fontanel/ Bregma
The skull shapes represent
The angle that the Petrous ridge lays in skull
Mesocephalic
Average skull; width is 15cm and 79% of length (19cm)
Brachycephalic
Fat head; width is 80% or more of length
Dolichocephalic skull
Narrow, longer; width is less than 75% of length;
The angle from the MSP to the Petrous ridge in a Brachycephalic skull is
54 degrees
The angle from the MSP to the Petrous ridge in a Mesocephalic skull
47degrees
The angle from the MSP to the Petrous ridge in a dolichocephalic skull
40 degrees
Widest part of cranium
Parietal tubercles/eminences
Frontal bone landmarks
Glabella; supercilliary ridge; supra orbital margin; supraorbital groove; frontal tuberosity/eminence
External occipital protuberance aka
Inion
Forms occipito-Atlantal joint
Lateral condylar portion (occipital condyles)
Petrous pyramid aka
Pars petrosa
Petromastoid
The parietal bones articulate with what bones?
Frontal
Occipital
Temporal
Sphenoid
