Term
| IS THE NEURAL TISSUE IN THE SPINAL CORD CONTINUOUS WITH THE NEURTAL TISSUE OF THE BRAIN? |
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Definition
| YES. THE PROTECTIVE COVERING AROUND THE SPINAL CORD AND THE BRAIN ARE CONTINUOUS WITH EACH OTHER. |
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Term
| THE PIA MATER FOLLOWS THE GYRI AND SULCI. WHARE IS THE GYRI AND SULCI? |
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Definition
| THE GYRI ARE THE HILLS AND THE SULCI ARE THE DIPS |
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Term
| WHAT ARE THE SPIDERY LEGS CALLED BETWEEN THE PIA MATER AND ARACHNOID MATER? |
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Definition
| TREBECULAE. AROUND THE TREBECULAR IS WHERE WE FIND THE SUBARACHNOID SPACE. THIS IS WHERE WE HAVE OUR CSF. |
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Term
| HOW CAN THE BRAIN SENSE ACID-BASE STATUS AND OXYGEN AND CARBON DIOXIDE INT HE BLOOD? |
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Definition
| THROUGH THE CSF. IT BATHES THE BRAIN. IT IS OUR BLOOD-BRAIN BARRIER. |
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Term
| HOW CAN THE BRAIN KNOW WHAT IS GOING ON IN THE BLOOD? |
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Definition
| IT KNOWS WHAT'S GOING ON IN THE BLOOD BECASUE SUBSTANCES WILL LEAVE THE BLOOD AND ENTER INTO THE CSF. CSF PROVIDES BOTH PHYSICAN AND CHEMICAL PROTECTION FOR THE BRAIN (ACIDOSIS, ALKALOSIS, HYPOXIA, HYPERCARBIA). |
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Term
| WHAT ARE THE PROJECTIONS OF THE ARACHNOID MATER THAT PROJECT UP, INTO, AND THROUGH THE DURA MATER? WHERE DO THEY PRIMARILY EXIST AT? |
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Definition
| ARACHNOID VILLA OR GRANULATIONS. THE PRIMARY EXIST IN THE DURAL SINUSES. |
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Term
| HOW DOES THE ARACHNOIDS REABSORB CSF? |
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Definition
| CSF IS GOING TO LEAK OUT OF THE SUBARACHNOID SPACE AND LEAK THROUGH LITTLE PORES IN THESE ARACHNOID VILLA AND INTO THE DURAL SINUSES. |
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Term
| WHAT ARE THE 2 DISTINCT LAYERS OF THE DURA MATER THAT MAKES THE DURA SINUSES? |
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Definition
| THE PERIOSTEUM WHICH IS ON TOP AND THE BIFURCATIONS ARE CALLED THE MENINGEAL LAYER. |
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Term
| WHAT IS THE SAGGITAL SUTURE? |
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Definition
| THE SUTURE THAT RUNS FROM THE OCCIPITAL BONE TO THE FRONTAL BONE AND SEPARATE THE LEFT FROM THE RIGHT PARIETAL BONES. |
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Term
| WHAT ARE THE 2 SINUSES ASSOICATED WITH THE SAGGITAL CALLED? WHERE DOES THE BOTTOM ONE SIT ABOVE? |
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Definition
| THE SUPERIOR SAGGITAL SINUS AND INFERIOR SAGGITAL SINUS. THE INFERIOR SAGGITAL SINUS SITS ABOVE THE CORPUS CALLOSUM WHICH ALLOWS COMMUNICATION BETWEEN THE LEFT AND RIGHT HEMISPHERES. |
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Term
| WHARE ARE THE REABSORPTION POINTS FOR THE CSF? |
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Definition
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Term
| WHAT IS THE LOCATION CALLED WHERE THE SUPERIOR AND INFERIOR SAGGITAL SINUSES MEET AT IN THE BACK OF THE SKULL? |
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Definition
| THE CONFLUENCE OF SINUSES |
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Term
| WHERE IS CSF FORMED BY AND WHERE? |
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Definition
| THE CSF IS FORMED BY SPECIALIZED BLOOD VESSELS KNOWN AS THE CHOROID PLEXUS. WE FIND THE CHOROID PLEXUS IN THE LATERAL VENTRICLE, THE 3RD VENTRICLE, AND THE 4TH VENTRICLE. |
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Term
| WHAT IS THE DURA PROJECTIONS THAT SEPARATES THE LEFT AND RIGHT CEREBRAL HEMISHPHERES? WHERE DOES IT RUN FROM AND TO WHERE? |
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Definition
| THE FALX CEREBRI. IT RUNS ALL THE WAY FROM THE ETHYMOID BONE TO THE OCCIPITAL BONE. THE FALX CEREBRI TERMINATES ALONG THE INFERIOR RIM. BELOW THE INFERIOR RIM IS THE INFERIOR SAGGITAL SINUS AND BELOW THAT IS THE CORPUS COLLOSUM. THE FALX CEREBRI IS ATTACHED ANTERIORLY TO THE CRISTA GALLI OF THE ETHMOID BONE AND POSTERIOR TO THE TENTORIUM CEREBELLI AT THE OCCIPITAL BONE. |
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Term
| WHAT DURA PROJETION SEPARATES THE LEFT AND THE RIGHT CEREBELLAR HEMISPHERES? WHAT DOES IT ATTACH TO? |
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Definition
| FLAX CEREBELLI. ATTACHED TO THE POSTEROR AND INFERIOR PORTIONS OF THE TENTORIUM CEREBELLI AND WILL CONTAIN THE OCCIPITAL SINUS IN ITS POSTERIOR BORDER. |
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Term
| DESCRIBE THE STRAIGHT SINUS. WHAT IS IT FORMED BY? |
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Definition
| IT RUNS FROM THE INFERIOR SAGGITAL SINUS DOWN TO THE CONFLUENCE OF SINUSES. IT IS FORMED BY THE FALX CEREBELLI. |
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Term
| WHAT IS A DURA PROJECTION THAT IS FORMED BETWEEN THE OCCIPITAL LOBE OF THE CEREBRUM AND THE CEREBELLUM? |
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Definition
| THE TENTORIUM CEREBELLI. THE EXTERNAL CONVEX BORDER ENCLOSES THE TRANSVERSE SINUS POSTERIORLY AND THE SUPERIOR PETROSAL SINUS ANTERIORLY. |
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Term
| WHAT DOES THE SELLAR DIAPHRAGM DO? |
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Definition
| COVERS THE PITUITARY GLAND. |
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Term
| WHICH SINUSES SEPARATE THE OCCIPITAL LOBE OF THE CEREBRUM FROM THE CEREBELLUM THAT IS UNDERNEATH IT? |
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Definition
| TRANSVERSE AND SIGMOID SINUSES |
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Term
| WHAT SINUS IS ARROUND THE PITUITARY? |
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Definition
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Term
| WHERE DOES THE OCCIPITAL SINUS LIE? |
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Definition
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Term
| WHERE ARE THE DURAL SINUSES GOING TO EMPTY INTO TO GO TO THE BLOOD? |
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Definition
| INTO THE JUGULAR FORAMEN. AT THE JUGULAR FORAMEN, THE DURAL SINUSES EMPTY INTO THE JUGULAR VEINS. |
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Term
| WHERE DOES CSF COME FROM? |
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Definition
| IT CAME FROM THE PLASMA IN THE CHOROID PLEXUS IN THOSE BLOOD VESSELS THAT ARE IN THE VENTRICLES. CSF BEGINS LIFE AS PLASMA AND CSF ENDS ITS LIFE AS PLASMA. |
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Term
| WHAT ARE THE 2 OPEN AREAS IN BOTH CEREBRAL HEMISPHERES CALLED? |
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Definition
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Term
| WHAT ARE THE SPECIALIZED BLOOD VESSELS CALLED INSIDE THE LATERAL VENTRICLES AND WHAT ARE THE CELLS CALLED THAT COVER THEM AND WHAT DOES THOSE CELLS DO? |
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Definition
| INSIDE OF THOSE LATERAL VENTRICLES, WE HAVE SPECIALIZES BLOD VESSELS KNOWN AS CHOROID PLEXUS. THE CHOROID PLEXUS IS COVERED BY SOME SPECIALIZED CELLS THAT ARE CALLED EPENDYMAL CELLS. THESE CELLS REGULARE HOW MUCH AND WHAT COMES OUT OF THE PLASMA AND INTO THE LATERAL VENTRICLE, FORMING THE CSF. THE EPENDYMAL CELLS ARE THE SITE OF CSF PRODUCTION. THE CELLES ENSURE THERE IS A TIGHT BLOOD BRAIN BARRIER. |
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Term
| WHAT CONNECTS THE LATERAL VENTRICLES TO THE 3RD VENTRICLE? |
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Definition
| THE INTERVENTRICULAR FORAMEN. |
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Term
| DESCRIBE HOW THE 3RD VENTICLE IS FORMED. |
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Definition
| IT IS FORMED BY THE MEDIAL WALLS OF THE LEFT AND RIGHT THALAMUS. THEY ARE CONNECTED BY THE INTERMEDIATE MASS OF THE THALAMUS. IT IS FORMED IN AN OPEN SPACE BETWEEN THE LEFT AND RIGHT THALAMIC NUCLEI AND THAT CIRCLE THAT IS IN THE MIDDLE, IS WHERE THE INTERMIEDATE MASS OF THE THALAMUS WAS. THE 3RD VENTRICLE IS FORMED BETWEEN THE THALAMIC NUCLEI OF THE LEFT AND RIGHT HYPOTHALAMUS AS WELL. |
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Term
| WHAT IS UNDERNEATH THE HYPOTHALAMUS? |
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Definition
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Term
| DISCUSS HOW CSF MAKES IT FROM THE LATERAL VENTRICLES TO THE 4TH VENTRICLE. |
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Definition
| CSF IS PRODUCES IN THE LATERAL VENTRICLES. IT FLOWS OUT THROUGH THE INTRAVENTRICULAR FORAMEN INTO THE 3RD VENTRICLE. THERE WE HAVE MORE CHOROID PLEXUS ADDING MORE CSF. THE 3RD VENTRICLE IS DRAINED BY WHAT IS KNOWN AS THE CEREBRAL AQUADUCT. THE CEREBRAL AQUADEUCT DRAINS INTO WHAT IS KNOWN AS THE 4TH VENTRICLE. |
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Term
| WHERE IS THE 4TH VENTRICLE FORMED BETWEEN? |
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Definition
| BRAINSTEM AND THE INFERO-ANTERIOR REGIONS OF THE CEREBELLUM. |
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Term
| WHERE DOES CSF TRAVEL FROM THE 4TH VENTRICLE? |
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Definition
| IT GOES TO 1 OF 3 HOLES. 2 LATERAL APERTURES AND 1 MEDIAN APERATURE. THE MEDIAN APERATURE GOES TO THE CENTRAL CANAL OF THE SPINAL CORD. |
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Term
| WHAT ARE EPENDYMAL CELLS JOINED BY? WHAT DOES THAT MEAN? |
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Definition
| TIGHT JUNCTIONS. THEY DON;T LEAK ANYTHING BETWEEN THEM. ANYTHING THAT ENDS UP IN THE CSF, MUST GO THROUGH THE EPENDYMAL CELLS. |
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Term
| WHAT IS THE SITE OF REGULATION AND WHAT FORMS OUR BLOOD CSF BARRIER? |
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Definition
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Term
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Definition
| ENLARGED AREAS OF THE SUBARACHNOISED SPACE THAT CONTAINS CSF. |
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Term
| WHAT DOES THE MONRO-KELLI DOCTRINE EXPLAIN? |
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Definition
| HOW CSF IS KEPT IN MOTION. THE CEREBRAL PULSE CAUSES PRESSURE WAVES THAT CAN ACCOMODATE AN INCREASE IN ICP. |
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