Derek Has Been Asked to Hand-Deliver a Message to Adeline

Multiple Choice

Derek has been asked to hand-deliver a message to Adeline. Adeline lives across the river from Derek, and there is no bridge; therefore, Derek must take a boat across the channel. When he reaches the shore, he ties the boat to the dock so he can take the message to Adeline. If we compare Derek's actions to those that occur in neurons, we can say that the dock, where Derrek binds his boat, is like a

A) vesicle.
B) neurotransmitter.
C) synapse.
D) receptor site.
E) glial cell.