Test 2 Spring Flashcards
HOW MANY CATEGORIES ARE THERE OF NERVOUS SYSTEM CELLS?
2 BROAD CATEGORIES
NAME THE 2 CATEGORIES OF NERVOUS SYSTEM CALLS.
NEURONS AND GLIAL CELLS
HOW MANY TYPES OF NEURONS ARE THERE?
3 TYPES
- SENSORY NEURONS
- INTER-NEURONS NEURONS
- MOTOR NEURONS
WHAT IS THE FUNCTION OF SENSORY NEURONS?
TAKE IN THE INFORMATION AROUND THEM FROM OTHER CELLS (SENSE)
WHAT IS THE FUNCTION OF INTERNEURONS? WHAT DO THEY DO?
INTERNEURONS INTEGRATE INFORMATION (INTERPRETS AND SUMS UP INFORMATION)
WHAT DO MOTOR NEURONS DO?
MOTOR NEURONS ENACT FUNCTION AND RESPONSE
WHAT IS AN EXAMPLE THAT USES ALL 3 NEURONS?
KNEE JERK REACTION
WHAT TYPE OF CELL IS A EPENDYMAL CELL AND ITS FUNCTION?
GLIAL CELL
STRUCTURAL SUPPORT
WHAT TYPE OF CELL IS A SCHWANN CELL AND ITS FUNCTION?
INSULATION OF NEURONS
WHAT TYPE OF CELL IS A OLIGODENDROCYTES AND ITS FUNCTION?
INSULATION OF NEURONS
GLIAL CELLS ALSO FUNCTION AS
MAINTAINING CONCENTRATION OF IONS AND CHEMICALS AROUND THE NEURONS
NEURONAL MAINTENANCE
WHAT DO ASTROCYTES DO? WHAT TYPE OF CELL ARE THEY?
THEY FORM BLOOD-BRAIN BARRIER AND ARE GLIAL CELLS
WHAT TYPE OF CELL IS A RADIAL AND WHAT IS THE FUNCTION?
THEY PROVIDE A PATH FOR DEVELPOPING NEURONS
GLIAL CELL
WHICH CELLS OUT OF THE TWO THAT PROVIDE INSULATION OF NEURONS ARE IN THE CENTRAL NERVOUS SYSTEM?
OLIGODENDROCYTES
WHICH CELLS OUT OF THE TWO THAT PROVIDE INSULATION OF NEURONS ARE IN THE PERIPHERAL NERVOUS SYSTEM?
SCHWANN CELLS
NEURON ANATOMY:
-FINGERS
DENDRITES
-RECEIVING SIGNALS
NEURON ANATOMY:
-PALM OF HAND
CELL BODY
-INFORMATION MEETS AND SUMS UP INOFRMATION
NEURON ANATOMY:
-WRIST
AXON HILLOCK
-WHERE WE GET TO THRESHOLD AND GET ACTION POTIENTAL
NEURON ANATOMY:
-ARM
AXON
NEURON ANATOMY:
-ARM W/ SLEEVE
MYELIN SHEATH
NEURON ANATOMY:
-ARM W/ GAPS
NODE OF RANVIEN
-ALLOW FOR SALUTATORY CONDUCTION
DO ALL NEURONS HAVE NODE OF RANVIEN?
NO
NEURON ANATOMY:
-FINGERS ON OTHER HAND
AXON TERMINALS
SPIT OUT NEURON TRANSMITTER
DO AXON CELLS RECEIVE OR SEND INFORMATION AWAY?
AWAY FROM CELL BODY
DO DENDRITES CELLS RECEIVE OR SEND INFORMATION AWAY?
RECIEVE
TRUE OR FALSE
THE NUMBER OF COMPLEXITY OF DENDRITES IS CORRELATED WITH THE AMOUNT OF INPUT THE NEURON RECEIVES.
TRUE
WHAT IS MEMBRANE POTENTIAL?
RELATIVE CHARGE BETWEEN INSIDE AND OUTSIDE
WHAT IS RESTING POTENTIAL?
-70mV
WHAT IS DEPOLARIZATION?
WHEN CELL BECOME MORE ACTIVE; MORE POSITIVE CLOSER TO ZERO
WHAT IS HYPER POLARIZATION?
WHEN CELL BECOMES MORE POLAR, MORE NEGATIVE
LESS ACTIVE
FARTHER FROM 0
