Neurotransmission Process and Pain Perception

Flashcards covering key vocabulary related to neurotransmission, conversion of action potentials, and pain perception.

Action Potential

A temporary change in electrical potential that propagates along the axon to transmit signals.

Axon Terminal

The endpoint of an axon where neurotransmitter release occurs.

Synaptic Cleft

The small gap between the presynaptic and postsynaptic neurons where neurotransmitters diffuse.

Exocytosis

The process by which vesicles release their contents, such as neurotransmitters, into the synaptic cleft.

Voltage Gated Calcium Channels

Channels that open in response to an action potential, allowing calcium ions to enter the axon terminal.

Fast Pain

A sharp, quick pain sensation often associated with injuries like paper cuts.

Slow Pain

A dull, throbbing pain sensation that is perceived differently from fast pain.

Neurotransmitter

Chemical messengers released from neurons that transmit signals across the synaptic cleft.

Calcium Ions

Positively charged ions that, when influxed into the neuron, trigger the release of neurotransmitters.

Postsynaptic Cell

The neuron or cell that receives the neurotransmitter from the synaptic cleft.