WVSOM -- Cranium
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| Viscerocranium | Portion of the skull making up the face. Made up of neurocrest cells
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| Neurocranium | the portion of the skull containing the brain and brainstem. Is lined by dura mater
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| Which suture is inconstant? | Metopic suture
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| What is the lambda? | Junction of the sagittal suture and the lamboidal suture
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| What is the pterion? | junction of coronary and squamous sutures
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| What is the bregma? | junction of sagittal and coronal sutures
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| What is the asterion? | junction of squamous and lambdoidal sutures
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| What are the 3 protective sheets that protect the brain? | meninges (dura mater, aracnoid and pia mater)
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| What is the purpose of CSF? | shock absorber
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| What is the function of the dura mater? | Physically supports brain and spinal cord, returns blood from the brain to the internal jugulars, and serves as the periosteum of the surrounding bones
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| What keeps the aracnoid close to the dura? | pressure of the cerebral spinal fluid
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| What is the function of the arachnoid mater? | allows vessels to travel to and from the brain
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| How do vessels travel thru the sub-arachnoid space? | arachnoid tubule
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| What are the three folds of the dura mater? | falx cerebri, tentorium cerebelli, and falx cerebella
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| What is the falx cerebri? | dura mater fold that separates the right and left lobes of the cortex
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| What is the tentorium cerebella? | dura mater fold that separates the occipital and temporal lobes from the cerebellum.
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| What does the falx cerebella? | duramater fold that separates the lateral cerebellar lobes
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| What nerves innervate the dura? | CN V and X
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| What causes pain in the dura? | stretching
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| What is the main artery to the dura? | middle meningeal artery
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| What bones make up the anterior cranial fossa? | Frontal, Ethmoid, Sphenoid Bones
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| What part of the brain is in the anterior cranial fossa? | Frontal Lobes
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| What bones make up the middle cranial fossa? | sphenoid and temporal bones
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| What part of the brain sits in the middle cranial fossa? | Temporal lobes, Pituitary gland, hypothalamus.
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| What artery and vein are in the middle cranial fossa? | middle meningeal artery and cavernous sinus
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| What nerves run thru the middle cranial fossa? | CN II, III, IV, V, VI
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| What bones make up the posterior cranial fossa? | Temporal and occipital bones
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| What part of the brain sits in the posterior cranial fossa? | cerebellum, pons and medulla
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| What nerves run thru the posterior cranial fossa? | VII, VIII, IX, X, XI, XII
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| What are the two small blood supplies to the spinal cord? | Anterior and posterior radicular artery
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| Where does the radicular arteries originate from? | Spinal branch of the posterior intercostals artery
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| Where do the radicular arteries anastamose? | anterior and posterior spinal arteries
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| What arteries branch off of the anterior and posterior spinal arteries? | sulcal artery and the vasocorona
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| Since the small spinal branches are not enough to supply the spinal cord, where does the spinal cord get other contributions from? | Enlarged anterior segmental medullary arteries and vertebral arteries near the brain
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| What do the left and right vertebral arteries join to form? | basilar artery
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| What does the basilar artery anastomose with? | Left and right internal carotid arteries
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| What forms the Circle of Willis? | Left and right internal carotid arteries
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| What is the blood supply to the brain and brainstem? | Circle of willis
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| Where are the venous sinuses located? | inside the folds of the dura mater
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| Where does blood drain from the cortex? | superior sagittal sinus and drains posteriorly
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| Where is the superior sagittal sinus? | hangs in a cleft between the two cerebral hemispheres
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| What are the unpaired venous sinuses? | Superior Sagittal sinus and inferior sagittal sinus
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| What anastamoses the basilar vein to the inferior sagital sinus? | great cerebral vein
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| Where do the superior and inferior sagittal sinuses anastomose? | confluence of sinuses
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| Where do deeper nervous structures drain? | inferior sagittal sunus and/or basilar vein
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| Where does the confluence of sinuses drain? | Left and right transverse sinuses
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| Where do the transverse sinuses drain? | sigmoid sinuses
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| How does blood exit the skull? | from the internal jugular veins
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| What drains blood to the internal jugular veins? | sigmoid sinuses
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| What does the cavernous sinus drain blood to? | internal jugular vein thru a superior and inferior petrosal sinus
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| What connects the venous sinuses and the scalp? | emissary veins
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| What veins can serve as routes of infection from the scalp into the dural system? | emissary veins
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Created by:
tjamrose
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