They are composed of the cell body, dendrites, and axon
Dendrites : receive information from other neurons and sensory receptors
Nucleus : provides energy fo the Neuron to carry out its d’unions
Cell body : support the cell’s life support centre
Axon : carries neuron’s message to other body areas
Myelin sheath : covers the axon of some neurons and hell’s speed neural impulses
Terminal branches of axon : form junctions with other cells
Neuron Function
Action potential
The electrical charge that travels down an axon, caused by the movement of positive ions in and out
Revisiting potential is when more positive ions are on the outside
Depolarization is an incoming message that stimulates a section of he axon
The flow of depolarization is the sequential depolarization and repolarization which causes action potential to move continuously down the axon
Synapse Structure
A synapse includes the tips of terminal branches of axon, the tiny space between neurons and the ends of dendrites of receiving Neuron
Synapse Function
When a signal gets to the end of the axon, the chemical signal is sent to the next Neuron in the network
Axon terminal button : produces NT, stores NT in synaptic vesicles, recycle NT building blocks
Action potential reaches axon terminal
Action Potential causes synaptic vesicles to release NT in synaptic gap
NT diffuses through the gap and binds to receptors on receiving Neuron
NT message is received as inhibitory or excitatory which will either stimulate AP on receiving Neuron (excitatory) or respires the AP on receiving Neuron (inhibitory)