Which structure is like a locked door that only certain neurotransmitter keys can unlock?
A) synapses
B) receptor sites
C) neural chiasms
D) response terminals

Question

Which structure is like a locked door that only certain neurotransmitter keys can unlock?
A) synapses 
B) receptor sites 
C) neural chiasms
D) response terminals

Quizplus · Accepted Answer

Receptor sites on the postsynaptic membrane act like locked doors that can only be opened by specific neurotransmitter keys. When the neurotransmitter binds to the receptor site, it can either excite or inhibit the postsynaptic neuron, depending on the type of neurotransmitter and the characteristics of the receptor. Synapses (A) are the gaps between neurons where neurotransmitters are released and received. Neural chiasms (C) are where nerve fibers cross over each other, and response terminals (D) are not a recognized term in neuroscience.

Which Structure Is Like a Locked Door That Only Certain