Question

a change in the resting potential of a postsynaptic dendrite from -70 mv to -72 mv is called
a neurotransmitter.
a depolarization.
an epsp.
an ipsp.
question 35 1.5 pts
hyperpolarization is to depolarization as
inhibitory is to excitatory.
aps are to epsps.
ipsps are to epsps.
aps are to ipsps.
many aps are to few aps.

Explanation:

1. For the first question, when the resting potential of a postsynaptic dendrite changes from - 70 mV to - 72 mV, it becomes more negative. This is hyper - polarization. An inhibitory postsynaptic potential (IPSP) causes hyperpolarization. A neurotransmitter is a chemical messenger, depolarization makes the membrane less negative, and an excitatory postsynaptic potential (EPSP) causes depolarization.
2. For the second question, hyperpolarization makes the neuron less likely to fire (inhibitory effect), while depolarization makes the neuron more likely to fire (excitatory effect). Also, IPSPs cause hyperpolarization and EPSPs cause depolarization. So hyperpolarization is to depolarization as IPSPs are to EPSPs and as inhibitory is to excitatory.

Answer:

First question: an IPSP.
Second question: inhibitory is to excitatory, IPSPs are to EPSPs.