LRA-225 Final Review Flashcards
how many cranial bones are in the skull?
8
how many facial bones are in the skull?
14
what are the 8 cranial bones?
- frontal
- right parietal
- left parietal
- occipital
- right temporal
- left temporal
- sphenoid
- ethmoid -
what cranial bones make up calvarium or skullcap of the skull?
- frontal
- right parietal
- left parietal
- occipital
what cranial bones make up the floor of the skull?
- right temporal
- left temporal
- sphenoid
- ethmoid
define glabella
smooth, raised prominence between the eyebrows just above the bridge of the nose
define the SOG
- supraorbital groove
- the slight depression above each eyebrow
define SOM
- supraorbital margin
- superior rim of each orbit
define supraorbital notch
- foramen
- a small hole or opening within the SOM slightly medial to its midpoint
define the frontal tuberosity
large, rounded prominence in the frontal bone
what separates each orbital plate in the frontal bone?
ethmoid notch
what cranial bones does the frontal bone articulate with?
- right parietal
- left parietal
- sphenoid
- ethmoid
what forms the lateral walls of the cranium and part of the roof?
parietal bones
what is the widest portion of the skull?
parietal tubercles/eminence
what cranial bones does the parietal bone articulate with?
- frontal
- occipital
- temporal
- sphenoid
- opposite parietal bone
what is the name of the bump or protuberance at the inferoposterior portion of the skull?
- External occipital protuberance
- inion
what is the large opening at the base of the occipital bone through which the spinal cord passes as it leaves the brain?
foramen magnum
what is the meaning of foramen magnum?
great hole
what articulates with the depression of the first cervical vertebrae/atlas?
condylar portions/occipital condyles
what is the name of the joint that articulates the condylar portions/occipital condyles with C1 atlas?
atlantooccipital joints
what cranial bones does the occipital bone articulate with?
- 2 parietals
- 2 temporals
- sphenoid
- atlas/C1
what cranial bone houses the delicate organs of hearing and balance?
temporal bone
what is the name of the arch on the temporal bone that creates the cheek?
zygomatic process
what is created when the zygomatic process and the temporal process meet?
zygomatic arch