Bony Structure Flashcards
(41 cards)
Which Cranial Bones are paired?
Parietal Temporal Maxilla Nasal Bones Zygomatic Lacrimal Palatine Inferior Nasal Concha
Which cranial bones are unpaired?
Frontal Occipital Sphenoid Ethmoid Vomer Mandible
What bones unite at Pterion?
Frontal, Parietal, Temporal, and Sphenoid
A dural fold that does into the cranium separating L and R hemispheres.
Falx Cerebri
Fold that separates the cerebrum from the cerellum.
Tentorium Cerebelli
Where is CSF formed?
Choroid Plexus
Where does CSF circulate?
Subarachnoid space
What structure is found in the subdural space?
Bridging veins
What structure is found in the epidural space?
Middle meningeal artery
What is the only anatomical space and what is found here?
CSF and major arteries
Which brain bleed do you typically see a midline shift?
Subdural Hematoma
Which brain bleed looks like a lens on an MRI scan?
Epidural Hematoma
Know the flow of CSF.
Lateral Ventricle
Foramen of Monro
Third Ventricle
Cerebral Aqueduct
Fourth Ventricle
Foramen of Luschka/Magendie
Subarachnoid Space
Absorbed by Arachnoid Granulation
Returned to blood via dural sinuses
What is the weakest point of the skull called and what bones make up this articulation?
Pterion
Frontal, temporal, parietal, sphenoid
Which layer of meninges is highly vascularized?
Pia matter
This is a source of protection formed by endothelial cells and tight junctions between blood vessels in pia matter and the brain
Blood Brain Barrier
What blood vessel(s) is damaged in during an epidural hematoma? Is this a fast or slow bleed?
middle meningeal artery
fast
What blood vessel(s) is damaged in a subdural hematoma? Is this a fast or slow bleed?
bridging veins
slow
True or false.
Subdural hematomas can occur with little to no trauma
True
What type of brain injury is sustained from meningeal irritation from blood in CSF?
Subarchnoid Hemorrhage
Name two examples of subarchnoid hemorrhage.
Aneurysm
Arteriovenous malformation (AVM)
A patient is seen in your clinic. Upon arrival, the patient presents with normal vitals and no reports of pain. The patient suddenly reports having the worst headache of their life. What might you suspect?
Subarachnoid hemorrhage caused by aneurysm or AVM
Which hematoma puts patients at risk of a delayed cerebral vasospasm of ischemia?
Subarachnoid hemorrhage
What are some signs and symptoms of a concussion?
headache dizziness nausea/vomiting amnesia fatigue photophobia difficulty concentrating dazed