ASCENDING TRACTS
CARRY SENSORY SIGNALS UP THE SPINAL CORD.
CAUDA EQUINA
BUNDLE OF NERVE ROOTS
L2-S5
CONTRALATERAL
ORGIN & DESTINATIONN ARE ON OPPOSITE SIDES
DECUSSATION
FIBERS CROSS OVER FROM L TO R OR R TO L SIDE OF THE BODY
DENTICULATE LIGAMENTS
EXTENSIONS OF A PIA MATER, EXTENDS THROUGH ARACHMOID TO DURA MATER, ANCHOR SP CORD & PREVENTS SIDE TO SIDE MOV'T.
DESENDING TRACTS
CARRY MOTOR SIGNALS DOWN TO BRAINSTEM
GANGLION
CLUSTER OF DIFFERENT NEUROSOMAS (NERVE CELL BODIES) OUTSIDE THE CNS IN THE PNS. ENVELPOED IN AN ENDOEURIUM CON'T WITH THAT OF THE NERVE CELL.
GRAY MATER
SPINAL CORD LOOKS LIKE A BUTTERFLY SITE OF ALL SYNAPTIC CONTACT BETWEEN NEURONS & SYNAPTIC INTEGRATION (INFO PROCESSING) IN CNS
IPOILATERAL
ORGIN & DESTINATION ON A SAME SIDE
MEDULLARY CONE
TAPPERED TIP OF SOINAL CORD
MENINGES
APINAL CORD & BRAIN ENCLOSED IN THEIR FIBOROUS MEMBRANES
MOTOR FIBERS
CARRY SIGNALS FROM THE CNS TO THE MUSCLES & GLANDS
SENSORY FIBERS
FIBERS CARRY SIGNALS FROM SENSORY RECEPTORS
TERMINAL FILUM
FIBOROUS STRAND THAT IS A CONTINUATION OF A PIA MATER
WHITE MATER
BUNDLES OF MYLIENTED AXINS CALLED TRACTS THAT CARRY SIGNALS UP & DOWN THE CNS
OLFACTORY
SMELLING
OPTIC
VISION
OCULOMOTOR
EYE MOV'T OPENING OF EYELID, CONSTRICTION OF PUPIL FOCUSING, PROPRICEPTION
TROCHLEAR
EYE MOV'T, PROPRIOCEPTION
TRIGEMINAL
PROVIDES SENSORY INFO TO THE FACE FOR TOUCH, PAIN, TEMP., & INNERVATES THE MUSCLE OF MASTIFICATION
ABDUCENS NERVE
PROVIDES EYE MOV'T (NOT EYE LID)
FACIAL
PROVIDES EXPRESSIONS, SENSE OF TASTE ON ANTERIOR 2/3'S OF TONGUE, SECRETION FROM SALIVARY & TEAR, NASAL & PALATINE GLAND
VESTIBULOCHLEAR
HEARING & SENSE OF BALANCE
VAGUS
PROVIDES SWALLOWING, TASTE, SPEECH, PULMONARY CARDIOVASCULAR, & GASTROINTESTIONAL REGULATION, SENSATIONS OF HUNGER, FULLNESS, & INTESTINAL DISCOMFORT
GLOSSOPHARYNGEAL
PROVIDES CONTROL OVER SWALLOWING, SALIVATION, GAGGING, SENSATIONS FRO POSTERIOR 1/3 TONGUE CONTROL OF BP & RESPIRATIONS
ACCESSORY
PROVIDES SWALLOWING, HEAD, NECK, & SHOULDER MOV'T
HYPOGLOSSAL
PROVDIES TONGUE MOV'T OF SPEECG, FOOD, MANIPULATION & SWALLOWING
WHAT IS SCIATICA?
SHARP PAIN THAT TRAVLES FROM GLUTEAL REGION ALONG THE POSTERIOR SIDE OF THE THIGH & LEG TO ANKLE
SCIATIC NERVE INJURY: TIBIAL & COMMON FIBULAR NERVE TRAVEL TOGTHER IN A CONNECTIVE TISSUE SHEATH & ARE COLLECTIVELY CALLED SCIATIC NERVE
CAUSES OF SCIATICA?
90% OF RESULTS FROM HERNIATED INVERTEBRAL DISC OR OSTEOPOROSIS OF LOWER SPINE
RADIAL NERVE INJURY: PASSES THROUGH AXILLA CRUTCH PARALYSIS, WRIST DROP
WHO IS LIKELY TO GET SCIATICA
MEN ARE SUSCEPTIBLE B-C OF THEIR WALLET IN REAR POCKET
RELFEX
MOTOR RESPONSE TO STIMULUS WITHOUT CONSCIOUS THOUGHT.
RECEPTOR
STRUCTURE THAT RECEIEVES THE STIMULUS & CONVERTS IT TO AN ACTION POTIENTIAL
AFFERENT (SENSORY) NUERON
THE NEURON TAKING THE STIMULUS TO THE CNS
INTEGRATING CENTER
BRAIN & SPINAL CORD
EFFERENT (MOTOR) NERVE
THE NEURON TAKING THE RESPONSE FROM THE CNS
EFFECTOR
THE STRUCTURE CAUSING AN EFFECT