#excitatory

[biologist4ever]

How Exocytosis Works from Cell A to Cell B

When a nerve signal reaches Cell A, calcium (Ca²⁺) enters, causing vesicles with neurotransmitters to move. The vesicles release neurotransmitters into the synaptic cleft (the gap between cells). These neurotransmitters then bind to receptors on Cell B, passing the signal along. After releasing the neurotransmitters, Cell A recycles the vesicles for future use. This process helps neurons communicate quickly and efficiently.

[biologist4ever]

How Neurons Communicate: Signal Transmission at the Synapse

When a nerve signal reaches the end of a neuron, it cannot jump to the next cell directly. Instead, it triggers the opening of calcium channels, causing neurotransmitters to be released into the synaptic cleft. These neurotransmitters cross the gap and bind to receptors on the next neuron, either activating or blocking a new signal.