Scalp, Brain, Craniu
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| 5 tissue layers associated with the scalp (from outermost to innermost) | show 🗑
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| Pericranium | show 🗑
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| Vertebral A | show 🗑
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| Basilar A | show 🗑
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| show | Anterior most part of Circle of Willis and an anterior division of the Internal Carotid A, supplies the medial & superior surfaces, and frontal pole of the brain.
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| Middle Cerebral A | show 🗑
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| Posterior Cerebral A | show 🗑
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| show | Originates off the posterior cerebral A and connects it to the internal Carotid A. It supplies the inferior aspect of the cerebral hemisphere and occipital lobe.
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| Anterior communicating A | show 🗑
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| Posterior Inferior Cerebellar A | show 🗑
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| show | Last branch off the basilar A before it bifricates into the posterior cerebral arteries.
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| Periosteal layer of the dura mater | show 🗑
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| Meningeal layer of the dura mater | show 🗑
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| 4 Dural infoldings of meningeal dura | show 🗑
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| Diaphragma Sallae | show 🗑
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| Tentorial Notch | show 🗑
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| Contents of the brainstem | show 🗑
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| What makes up the different dural venous sinuses? | show 🗑
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| Superior sagittal Sinus | show 🗑
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| Confluence of Sinuses | show 🗑
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| show | much smaller than superior. Runs in the inferior, free border of Falx cerebri and empties into the straight sinus close to tentorium cerebelli.
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| Straight sinus | show 🗑
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| show | Leave the confluence of sinsus laterally along the posterolateral attachments of the tentorium cerebelli. Empties into Sigmoid sinus at the petrous temporal bones.
**Left is more dominant**
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| show | S-shaped course in the posterior cranial fossa coursing both occipital and temporal bones. Leaves the jugular foramen as the Internal Jugular V.
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| show | venous plexus, Superolateral to the sphenoid air sinus on either side of the sella turcica. Goes from the superior orbital fissure to the petrous part of temporal bone. Receives BL from: Sup & inf opthalmic veins. Drains into sup or inf petrosal sinuses
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| show | Runs from posterior cavernous sinuses to the sigmoid sinuses. Lies in the anterolateral attachment of the tentorium cerebelli.
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| show | Run from the the posterior cavernous sinuses to the jugular foramen and empties into the IJV.
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| show | Superior branch off the maxillary A. Enters the floor of the middle cranial fossa via foramen spinosum. Runs laterally up the skull and divids into Ant and Post branches. Damage is Responsible for epidural hematoma/lateral shift/lucid interval
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| show | Avascular. in close association but to attached to meningeal dura layer, only held against it by CSF pressure. Contains fibroblasts, collagen, and elastic fibers.
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| Pia mater | show 🗑
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| Subarachnoid Space | show 🗑
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| Central Sulcus | show 🗑
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| show | Seperates the temporal lobes (inferior) from both the parietal lobes and frontal lobe.
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| show | Seperates the occipital lobe (posterior) from both parietal and temporal lobes.
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| show | 1st and 2nd ventricles, largest of all ventricles. Derived from the telencephalon. Occupy large areas b/w cerebral hemispheres.
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| show | Allows CSF drainage from the lateral ventricles to the 3rd ventricle.
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| 3rd Ventricle | show 🗑
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| show | Narrow channel in the midbrain connecting the 3rd and 4th ventricles. Derived from the mesencephalon.
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| 4th ventricle | show 🗑
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| show | Lies in the attached border of falx cerebelli and empties into the confluence of sinuses.
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| Arachnoid granulations | show 🗑
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| show | Purulent material can move freely within the loose areolar tissue.
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| show | Dura is innervated by trigeminal N (all three branches). Pain is usually caused by vasodilation and distortion of the dura
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| show | B/c the squamous temporal bone is very thin, it can be fracture thus damaging the middle meningeal A. BL is contained within the dura and the inner skull table. Raises intracranial pressure, creates lateral shift and lucid interval. CN III affected 1st
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| Most common symptom seen with Cavernous sinus infections | show 🗑
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Created by:
WeeG
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