1. Which combination of axon features should lead an axon to communicate with do
ID: 3164432 • Letter: 1
Question
1. Which combination of axon features should lead an axon to communicate with downstream cells most slowly? axon that is 1. long 2. short 3. wide 4. thin 5. myelinated 6. nonmyelinated a) 1,3, and 5 b) 1, 3, and 6 c) 1,4, and 6 d) 2,3, and 5 e) 2,4, and 6 2. In a typical motor neuron, what is the correct sequence in which transmitting an electrical current? these structures usually become involvedin 1. cell body 2. axon 3. axon hillock 4. dendrites 5. synaptic terminals a) 4, 1, 3, 2, 5 b) 5,4, 1,3,2 c) 4,3, 1,2,5 d) 5, 4, 1, 2, 3 e) 4, 1, 2,3,5 3. Which is most directly involved in causing neurotransmitter release from the presynaptic membrane? a) Na b)K c) Cl d) Ca e) large, proteinaceous anions 2+Explanation / Answer
ANSWER 1.
c) 1, 4, and 6 - this is because long will take time, non0myelination will prevent jumping of potential and thin will cause there to be lesser volume to surface-area ratio causing resistance.
ANSWER 2.
a) 4, 1, 3, 2, and 5
ANSWER 3.
d) Ca2+
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