Synaptic vesicles contain chemicals called that are released across the synapse to the next neuron.

The synaptic vesicles contain chemicals called neurotransmitters, that are released across the synapse to the next neuron.

Vesicles are the organelles where neurotransmitters are stored, thanks to which, these substances are protected from enzymatic destruction. In addition, they also play a fundamental role in the process of neurotransmitter release by exocytosis

The correct answer is neurotransmitters.

Explanation:  

Vesicles are defined as the form of the organelles into which the storage are done for the neurotransmitters. They are protected all through the destruction of the enzymatic.

The salt in the sea water dehydrated the sailor because her body could not take in the amount to salt in the sea water