Which of these is the reason an action potential will only propagate in a single direction?

Describe how the human ear detects sound. 

Which of the following is the threshold membrane potential of a general neuron?

Explain how crossbridges are formed in skeletal muscle .

Which muscle tissue is under voluntary control?

An action potential can be triggered by multiple neurons all sending a excitatory signals to a single neuron, regardless of the membrane potential.

The surface of the tongue is composed of which kind of tissue?

Which organelles are adapted into the skeletal muscle cell?

In order for an action potential to occur, the axon must be myelinated.

Which of the following adaptations allows for the presynaptic neuron of an electrical synapse to trigger a postsynaptic neuron