Neurotransmitter Release and Synaptic Transmission

Flashcards summarizing key concepts related to neurotransmitter release and synaptic transmission.

What is the role of Calcium (Ca++) in neurotransmitter release?

Calcium ions entering the axon terminus enable the release of neurotransmitters into the synapse.

How do neurotransmitters transmit signals across the synapse?

Neurotransmitters diffuse across the synapse to bind with receptors on the postsynaptic neuron or neuromuscular junction.

What occurs at the postsynaptic dendrite upon neurotransmitter binding?

At the postsynaptic dendrite, the neurotransmitter opens Na+ channels, leading to neuron depolarization.

Describe the process at the neuromuscular junction initiated by acetylcholine.

Acetylcholine binds to its receptor at the neuromuscular junction, causing Ca++ release from the sarcoplasmic reticulum, which facilitates muscle contraction.