1. Nerve cell functioning

2. The nature of the processes
Functional unit is the neuron
Neuron consists of the cell body and processes
What goes on in the processes
Dendrites
Spatial information-summation
Temporal information--summation
Gradational phenomenon
Axon
All or none phenomenon
Membrane potential
Membrane changes polarity via flux of ions in and out of the cell

3. What happens at the junction between axon and dendrite
Synapse--synaptic gap
Transformation of an electrical phenomenon into a chemical phenomenon
Neurotransmitter-neurohumor--acetylcholine
Cholinesterase

4. Reflex arc
Sensory unit
Integration unit
Motor unit

5. Processing
Distributive
Centralized

6. Protostomes
Annelids
Molluscs
Arthropods