Question

Neuronal action potential reaches the axon terminal of neuron 1. Neurotransmitters, such as __________, are released from the axon terminal by exocytosis, diffuse across the synaptic cleft, and bind to receptors on the postsynaptic membrane of neuron 2, generating an excitatory local potential.

a) Sodium ions
b) Glucose molecules
c) ATP
d) Antibodies

Answer 1

Neurotransmitters, such as acetylcholine, are released from the axon terminal by exocytosis, diffuse across the synaptic cleft, and bind to receptors on the postsynaptic membrane of neuron 2, generating an excitatory local potential.

Step-by-step explanation:

When an action potential reaches the axon terminal of neuron 1, neurotransmitters, such as acetylcholine (ACh), are released from the axon terminal by exocytosis. These neurotransmitters diffuse across the synaptic cleft and bind to receptors on the postsynaptic membrane of neuron 2, generating an excitatory local potential. The correct option is a) Sodium ions.