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skull
Question | Answer |
---|---|
the skull or bony skeleton of the head rest on | the superior end of the vertebral column |
the skull(bony skeleton) is divided into two main sets of bone what are they | 8 cranial bones & 14 facial bones |
the eight cranial bones of the cranium are divided into two parts | calvaria(skull cap) & floor |
the calvaria is know as the | skull cap |
the calvaria is divided into 4 parts | frontal,right & left parietal,occipital |
the floor is divided into 4 parts | left & right temporal,sphenoid,ethmoid |
the frontal bone is the most visible and contributes to | formation of the forehead & superior part of each orbit |
the two parts of the frontal bone is | squamous or vertical portion & supraorbit groove(SOG) |
what is the squamous/vertical portion | the glabella is the smooth raised prominence b/w the eyebrows just above the nose. |
what is the supraorbit groove(sog) | the slightly depression above each eyebrow. |
why is SOG an important landmark | b/c is corresponds to the floor of the anterior fossa of the cranial vault,which is also at the level of the orbit plate or the highest level of the facial bones mass. |
what is superior rim of each orbit is the | supraorbit margin or SOM |
what is the supraorbital notch(foramen) | is a small hole or opening within the SOM slightly medial to its midpoint |
what pass through the supraorbital notch (foramen) | nerves & arteries |
what is the ridge of bone beneath each eyebrow is termed | superciliary |
what does the superciliary do | arches the glabella |
what is on each side of the squamous portion of the frontal bones above the supraorbital grooves | a larger prominence termed the frontal tuberosity (eminence) |