NSC Ch. 5 2025/2026 Exam Questions
with 100% Correct Answers | Latest
Update
synaptic transmission - 🧠 ANSWER ✔✔process of information transfer at a
synapse
two types: electrical and chemical
electrical synapses - 🧠 ANSWER ✔✔synaptic transmission via electrical
current flowing from one neuron to the next
,occur through gap junctions that ions pass directly from cytoplasm of one
cell to cytoplasm of the other
at the junctions, channels called connexons (2 per channel) form gap
junction channels that ions pass through
transmission is bidirectional and very fast
when connected by by gap junctions, said to be electrically coupled
AP in the presynaptic neuron causes a small amount of ionic current to flow
across the gap junction channels into the other neuron causing PSP
chemical synapses - 🧠 ANSWER ✔✔chemical neurotransmitters transfer
information from one neuron to another at the synapse; most
presynaptic and postsynaptic membranse separated by synaptic cleft that's
filled with a matrix of fibrous extracellular protein
, presynaptic element usually an axon terminal, which contains dozens of
synaptic vesicles inside of which are neurotransmitters and the terminal
may also contain secretory vesicles
postsynaptic potential (PSP) - 🧠 ANSWER ✔✔AP caused in the second
neuron in an electrically coupled neurons
secretory granules - 🧠 ANSWER ✔✔large vesicles in axon terminals that
contain soluble protein that appears dark in the electron microscope
also called dense-core vesicles
membrane differentiations - 🧠 ANSWER ✔✔dense accumulations of protein
adjacent to and within the membrane on either side of the synaptic cleft
active zones - 🧠 ANSWER ✔✔sites of the neurotransmitter release; located
on the presynaptic side
postsynaptic density - 🧠 ANSWER ✔✔the protein thickly accumulated in
and just under the postsynaptic membrane
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
3
with 100% Correct Answers | Latest
Update
synaptic transmission - 🧠 ANSWER ✔✔process of information transfer at a
synapse
two types: electrical and chemical
electrical synapses - 🧠 ANSWER ✔✔synaptic transmission via electrical
current flowing from one neuron to the next
,occur through gap junctions that ions pass directly from cytoplasm of one
cell to cytoplasm of the other
at the junctions, channels called connexons (2 per channel) form gap
junction channels that ions pass through
transmission is bidirectional and very fast
when connected by by gap junctions, said to be electrically coupled
AP in the presynaptic neuron causes a small amount of ionic current to flow
across the gap junction channels into the other neuron causing PSP
chemical synapses - 🧠 ANSWER ✔✔chemical neurotransmitters transfer
information from one neuron to another at the synapse; most
presynaptic and postsynaptic membranse separated by synaptic cleft that's
filled with a matrix of fibrous extracellular protein
, presynaptic element usually an axon terminal, which contains dozens of
synaptic vesicles inside of which are neurotransmitters and the terminal
may also contain secretory vesicles
postsynaptic potential (PSP) - 🧠 ANSWER ✔✔AP caused in the second
neuron in an electrically coupled neurons
secretory granules - 🧠 ANSWER ✔✔large vesicles in axon terminals that
contain soluble protein that appears dark in the electron microscope
also called dense-core vesicles
membrane differentiations - 🧠 ANSWER ✔✔dense accumulations of protein
adjacent to and within the membrane on either side of the synaptic cleft
active zones - 🧠 ANSWER ✔✔sites of the neurotransmitter release; located
on the presynaptic side
postsynaptic density - 🧠 ANSWER ✔✔the protein thickly accumulated in
and just under the postsynaptic membrane
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
3
