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11 CRANIAL NERVES
CRANIAL NEVES
Question | Answer |
---|---|
SPINAL CORD | IS A CONTINUATION OF BRAIN STEM. |
LUMBAR PUNCTURE | A HOLLOW NEEDLE IS INSERTED INTO THE SUBARACHNOID SPACE, BETWEEN L3AND L4 |
GREY MATTER | (CROSS SECTION OF THE SPINAL CORD)LOCATED IN THE CENTER AND SHAPED LIKE A BUTTERFLY. COMPOSED OF CELL BODIES, INTERNEURONS AND SYNAPSES. |
CENTRAL CANAL | AN OPENING OR HOLE THAT EXTENDS THE ENTIRE LENGTH OF THE SPINAL CORD. |
WHITE MATTER | COMPOSED OF MYELINATED AND UNMYELINATED AXONS |
NEURAL AXONS GROUPED TOGETHER | SENSORY AND MOTOR NERVE TRACTS |
SENSORY TRACTS THAT CARRY INFORMATION FROM THE PERIPHERY, UP THE SPINAL CORD, AND TOWARD THE BRAIN | ASCENDING TRACTS |
THE SPINALTHALMIC TRACT | IS AN EXAMPLE OF AN ASCENDING TRACT |
DECENDING TRACTS | MOTOR TRACTS CARRY INFORMATION FROM THE BRAIN TO THE PERIPHERY |
THE MAJOR DECENDING TRACTS | PYRAMIDAL (CORTICOSPINAL TRACT) AND EXTRAPYRAMIDAL TRACTS |
DECUSSATE | CROSS OVER |
ATTACHED TO THE SPINAL CORD ARE THE | SPINAL NERVES |
THE CELL BODIES OF THE SENSORY FIBERS ARE GATHERED TOGETHER IN THE | DORSAL ROOT GANGLIA |
VENTRAL ROOT | IS COMPOSED OF MOTOR FIBERS |
SPINAL NERVES CONTAIN BOTH SENSORY AND MOTOR FIBERS, ALL SPINAL NERVES ARE? | MIXED NERVES |
THE SPINAL CORD SERVES THREE MAJOR FUNCTIONS... | SENSORY PATHWAY, MOTOR PATHWAY, AND REFLEX CENTER |
SENSORY PATHWAY | THE SPINAL CORD PROVIDES A PATHWAY FOR SENSORY INFORMATIONTAVELING FROM THE PERIPHERY TO THE BRAIN. EX FINGER PRICK- FINGER-ASCENDS SPINAL CORD TO THE BRAIN |
A REFLEX IS? | AN INVOLUNTARY RESPOSE TO A STIMULUS. |
PATELLAR TENDON OR KNEE JERK REFLEX | QUADRICEPS LIGAMENT BELOW YOUR KNEE CAP. HELPS MAINTAIN AN UPRIGHT POSITION. |
WITHDRAWAL REFLEX | HELPS PROTECT YOU FROM INJURY EX. QUICKLY MOVES YOUR FINGER AWAY FROM A HOT IRON |
PUPILLARY REFLEX | REGULATES THE AMOUNT OF LIGHT THAT ENTERS THE EYE |
BARORECEPTOR REFLEX | HEART AND BLOOD VESSELS RESPONED TO REGULATE BLOOD PRESSURE TO NORMAL |
BABINSKI REFLEX | STROKING LATERAL SOLE, HEAL TO TOE RESULTING IN PLANTAR FLEXION. |