NERVOUS TISSUE

POLARIZED NEURON

• Intracellular Environment More Negative• -70mV• Sodium Potassium Facilitated Exchange

Pump Activated• Ionic Gates Closed• Potassium Greater Concentration Inside• Sodium Greater Concentration Outside• Chloride Greater Concentration Outside

DEPOLARIZED NEURON

• Intracellular Environment Less Negative

• +30mV

• Sodium Potassium Facilitated Exchange Pump Deactivated

• Na+ Gates Open

• Na+ Ionic Influx

• Exocytosis of Neurotransmitter

FACILITATED TOWARD EXCITATION

• Intracellular Environment Less Negative

• -69mV

• Sodium Potassium Facilitated Exchange Pump Deactivated

• Na+ Gates Open

• Na+ Ionic Influx

EXCITATORY POST SYNAPTIC POTENTIAL

• EPSP

• Intracellular Environment Less Negative

• -65mV

• Sodium Potassium Facilitated Exchange Pump Deactivated

• Na+ Gates Open

• Na+ Ionic Influx

REPOLARIZING NEURON

• Intracellular Environment Approaches Zero

• 0mV

• Sodium Potassium Facilitated Exchange Pump Still Deactivated

• K+ Gates Open

• K+ Ionic Out flux

• Refractory Period

INHIBITORY POST SYNAPTIC POTENTIAL

• IPSP

• Intracellular Environment More Negative

• -71mV

• Sodium Potassium Facilitated Exchange Pump Activated

• Cl- Gates Open

• Cl- Ionic Influx

SPATIAL SUMMATION

• Several Presynaptic Neurons Release Simultaneously

• Post Synaptic Integration

• Post Synaptic Qualitative Analysis

• Post Synaptic Quantitative Analysis

• Post Synaptic Summation

TEMPORAL SUMMATION

• Presynaptic Neuron Releases One Synaptic End Bulb Temporally

• Post Synaptic Neuron Integration

• Post Synaptic Qualitative Analysis

• Post Synaptic Quantative Analysis

• Post Synaptic Summation