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16 Cards in this Set
- Front
- Back
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Name regions of the skull that develop by cartilaginous ossification?
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petromastoid portion of temporal bone, body of occiput, body of sphenoid, ethmoid
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What are the 8 bones (or bone pairs) of the calvarium?
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Sphenoid, Occiput, Temporals, Parietals, Ethmoid
Frontals |
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How does that cartilaginous neurocranium form?
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Formed under compressive forces (dense)
Cartilage is ossified |
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How does the membranous neurocranium differ from the cartilaginous?
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These bones are more accommodative - less dense and more pliable. They form by direct ossification of mesenchyme. Allows for molding of fetal skill during birth.
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Name the regions of membranous neurocranium.
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Frontals, parietals, squamous portions of occiput and temporal bones, greater wings and pterygoid of sphenoid,
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Which bones of the Cartilaginous Viscerocranium develop from the first arch? Second?
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First - malleus and incus
Second - Stapes and Styloid process of temporal bone |
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What are do the bones of the membranous viscerocranium develop from? Name the bones.
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Maxillary prominence of 1st pharyngeal arch.
Squamous portion of temporal bone, Maxillae, zygomatics, Nasal bones and Mandible |
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How many parts is the occiput in at birth? Name the parts.
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4 parts at birth (which make up foramen magnum).
Basilar part, Condylar part, Supraocciput and Interparietal |
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What region of the occiput is opisthion,
Inion, the sagittal ridge for falx cerebri and cerebelli, Horizontal ridge for tentorium cerebelli and grooves for transverse sinus located? |
Squama
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What bones does the occiput articulate with?
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Parietals, Temporals, Sphenoid, Atlas
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What foramina are in the occiput?
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Foramen magnum, Hypoglossal canal and the jugular foramen
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What structures go through the jugular foramen?
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inferior petrosal sinus, glossopharyngeal nerve
vagus nerve, spinal accessory nerve and sigmoid sinus |
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How many parts is the sphenoid in at birth? What are the parts?
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3. Body, lesser wings and Greater wing
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What does the sphenoid articulate with?
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All bones of cranium. 6 bones of face: Ethmoid, Palatines, Vomer, Zygomae
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What foramina go through the sphenoid?
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Foraman Ovale, Foramin Rotundum, Forman spinosum, Foramin, optic foraman and Superior orbital fissure
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What foramina are in the temporal bone? What structures run through?
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Jugular foramen (btw temporal and occiput): CN IX, X, XI, Sigmoid sinus, Inferior petrosal sinus and Posterior meningeal artery.
Carotid canal: internal carotid artery and sympathetic plexus |
