Spinal cord & spinal nerves WK5 L2 Flashcards
WHAT ARE THE FUNCTIONS FO THE SPIAL CHOLRD?
CONDUCTION - LOCOMOTION - REFLEXES
WHAT DOES THE CONDUCTION SECTION DO?
CARRIES INFORMATION TO AND FROM THE BRAIN
BUNDLES OF FIBRES PASSING INFORMATION UP AND DOWN SPINAL CHORD
WHT DOES THE LOCOMOTION FUNCTION DO?
CO-ORDINATES MUSCLES GROUPS
POOLS OF NEURONS CONTROLLING FLEXION AND EXTENSION
WHAT DOES THE REFLEX SECTION DO?
INVOLUNTARY REFLEXES TO EXTERNAL STIMULI
SPINAL CHORD AND PERIPHERAL NERVES
WHAT IS THE SPINAL CHORD?
NERVOUS TISSUES
WHAT IS THE SPINE?
THE BONE AROUND THE NERVOUS TISSUES
HOW MANY PAIRS OF SPINAL NERVES IS THERE?
31
WHERE DOES THE SPINAL CHORD BEGIN AND END?
C1 TO L1
WHAT IS THE CAUDA EQUINA?
SACK OF NERVE ROOTS EXTENDING FROM L2 TO S5
WHAT ARE THE FIBROUS LAYERS OF THE SPINAL CHORD?
DURA MATER - ARACHNODI MATER - PIA MATER
WHERE IS THE DURA MATER?
OUTER LAYER
WHERE IS THE ARACHNOID MATER?
INNER LAYER
WHERE IS THE PIA MATER?
INNER LAYER
WHAT IS GREY MATTER?
PART OF THE CNS BRAIN AND SPINE THAT CONTAINS THE CELL BODIES
WHAT IS WHITE MATTER?
AREA THAT CONTAINS MEYLINATED AXONS
WHAT ARE THE SPINAL HORNS?
BUTTERFLY SHAPED GREY MATTER INSIDE SPINAL CHORD
POSTERIOR AND ANTERIOR
WHAT IS THE POSTERIOR HORN?
POSTERIOR ROOT OF SPINAL NERVE SERVES SENSORY FUNCTION
WHAT IS THE ANTERIOR HORN?
ANTERIOR ROOT OF SPINAL NERVE SERVES MOTOR FUNCTION
WHAT ARE THE THREE NERVES OF EACH SPINAL COLUM?
SENSORY - INTER - MOTOR
WHAT DO THE SENSORY NERVES DO?
REPORT INCOMING INFORMATION TO THE CNS
WHAT DO THE INTER NERVES DO?
CONNECT SIGNALS BETWEEN SENSORY AND MOTOR NERVES
WHAT DO THE MOTOR NREVES DO?
SEND OUTGOING INFORMATION TO THE PNS FOR THINGS LIKE MOVEMENT
WHERE ARE THE SENSORY NERVES?
IN THE POSTERIOR ROOT
WHERE ARE THE MOTOR NERVES?
IN THE ANTERIOR ROOT
WHAT IS ASCENDING?
UPWARDS
WHAT IS DESCENDING?
DOWNWARDS
WHAT IS THE ASCENDING PART OF THE SPINE CALLED?
SPINO XXXX
WHAT IS THE DESCENDING PART OF THE SPINE CALLED?
XXXX SPINAL
DOES THE SPINAL CHORD HAVE ASCENDING OR DESCENDING CHORDS?
BOTH
WHAT IS DECUSSITATION?
THE ACTION OF THE NERVE FIBRES CROSSING
WHAT DOES CONTRALATERALL MEAN?
OPPOSITE SIDES
WHAT DOES IPSYLATTERAL MEAN?
SAME SIDE
WHAT IS THE SPINOTHALMAIC PATHWAYS TRACT RESPONSIBLE FOR?
PAIN - PRESSURE - LIGHT - TEMPERATURE - TOUCH - TICKLE - ITCH
(ASCENDING TRACTS)
HOW MANY ORDER NEURONS ARE THERE IN THE SPINOTHALAMIC TRACT?
3 - FIRST ORDER - SECOND ORDER - THIRD ORDER
WHAT DO THE FIRST ORDER NEURONS DO?
SENSORY RECEPTORS - SKIN TO SPINAL CHORD VIA POSTERIOR ROOT
WHAT DO THE SECOND ORDER NEURONS DO?
DECUSSATES AT SPINAL CHORD AND PROJECTS UP TO THE BRAIN (THALAMUS)
WHAT DO THE THIRD ORDER NEURONS DO?
PROJECT FROM THE THALAMOUS TO THE CEREBRAL CORTEX
WHAT DO THE ASCENDING PART OF THE SPINE DO?
SEND SENSORY RESPONSES TO THE BRAIN
WHAT DOES THE DESCENDING PART OF THE SPINE DO?
SENDS MOTOTR COMANDS TO THE BODY
WHAT IS THE CORTICOSPNIAL PATHWAYS TRACT RESPONSIBLE FOR?
PATHWAY WHERE THE BRAIN CONTROLS THE MOVEMEBT OF MUSCLES
DESCENDING TRACTS
HOW MANY ORDER NEURONS ARE THERE IN THE CORTICOSPIANL TRACT?
2 - UPPER NEURONS - LOWER NEURONS
WHAT DO THE UPPER NEURONS DO?
FROM CEREBRAL CORTEX TO BRAIN STEM/SPINAL CHORD - MOTOR COMPONENT OF CNS TRANSMITTING FRON BRAIN TO LOWER NEURONS
WHAT DO THE LOWER NEURONS DO?
FROM SPINAL CHORD TO MUSCLES AND GLANDS - MOTOR COMPONENT CONNECTING TO MUSCLES
WHAT DOES A NERVE CONTAIN?
BUNDLES OF AXONS WRAPPED IN FASCICLES
WHAT ENCASES THE NERVES?
EPINEURIUM
WHAT ARE INSIDE FASCICLES?
INDIVIDUAL AXONS
WHAT ARE FASCICLES WRAPPED IN?
PERINEURIUM
WHAT COATS EACH INDIVIDUAL AXON?
ENDONEURIUM
HOW MANY CERVICAL VERTEBRAE IS THERE?
8
HOW MANY THORASIC VERTEBRAE IS THERE?
12
HOW MANY LUMBAR VERTEBRAE IS THERE?
5
HOW MANY SACRAL VERTEBRAE IS THERE?
5
HOW MANY COCCYGEAL VERTEBRAE IS THERE?
1
HOW MANY PLEXI NERVES ARE THERE?
5
WHAT ARE THE 5 PLEXI NERVES?
CRVICAL - BRACHIAL - LUMBAR - SACRAL - COCCYGEAL
