I know that cold receptors have myelinated axons and heat receptors don't. From a physiological perspective what could be the consequences if cold receptors were unmyelinated? Would that pose some detrimental effect?

How long is the longest pathway a neural signal can take starting from a sensory neuron and ending at a motor neuron (without loops)? [This is a purely theoretical question concerning only the synaptic connectivity of neurons, not the propagation of real signals.] The number I am looking ...