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Definition. Protein characteristic of the postsynaptic membrane. In a chemical synapse, the postsynaptic membrane is the membrane that receives a signal (binds neurotransmitter) from the presynaptic cell and responds via depolarisation or hyperpolarisation. The postsynaptic membrane is separated from the presynaptic membrane by the synaptic cleft.
Answers. Best Answer: The area that includes the presynaptic membrane, the synaptic cleft, and the postsynaptic membrane is called a synape. When the nerve impulse reaches the nerve endings it causes the presynaptic membrane to become more permeable to calcium.nswers. Best Answer: The area that includes the presynaptic membrane, the synaptic cleft, and the postsynaptic membrane is called a synape. When the nerve impulse reaches the nerve endings it causes the presynaptic membrane to become more permeable to calcium.