Scenario 23 Flashcards
What are the neurocranial bones called?
Frontal, parietal, ethmoid, sphenoid, occipital, temporal
What are the viscerocranial bones called?
Mandible, vomer, maxillae, inf nasal conchae, zygomatic, palatine, nasal and lacrimal
What is the nasal septum made up of?
Vomer and perpendicular plate of the ethmoid bone
What are the skull air sinuses?
Frontal (medially above eyes), ethmoid (between eyes), sphenoid (more deeply), maxillary sinus (either side of nose)- if a patient gets sinusitis in here bad as need to work against gravity to clear it
What skull sutures are there?
Coronal suture (between frontal and parietal), saggital suture (between the parietal bones), lamboid suture (between parietal and occipital bones)
Where is Bregma?
Between coronal and sagittal sutures
What bones make up the anterior cranial fossa?
frontal, ethmoid and lesser wing of sphenoid
What bones make up the middle cranial fossa?
sphenoid (greater wing and body), petrous part of temporal bone
What bones make up the posterior cranial fossa?
temporal and occipital bones
What is the outermost meninges made up of?
Dura mater- collagen fibres acting as a mechanically protective covering
Arachnoid mater- Delicate and web like made of non-vascular CT
Pia mater- Continuous with surface and forms the choroid plexus (CSF production)
What is the falx cerebri?
A fold of dura mater in the longitudinal fissure that separates the cerebral hemispheres
What is the falx cerebelli?
A fold of the dura mater which separates the cerebellar hemispheres
What is the tentorium cerebelli?
an extension of dura mater separating cerebellum from inferior part of occipital lobe
What are the dural venous sinuses?
Between periosteal and meningeal layers of dura containing no valves draining into internal jugular vein
What is an extradural haemorrhage
Occurs between dura and the skull due to a rupture of middle meningeal artery
