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BIOS 260 Quiz 2 & HW: Questions and Answers 100% Solved
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BIOS 260 Quiz 2 & HW: Questions and Answers 100% Solved
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BIOS 260 Quiz 2 & HW: Questions and Answers 100%Solved
Nerve fibers are classified according to diameter and degree of myelination. These will
determine the speed of conduction of the action potential. Which of the following group of
fibers will have the fastest speed of conduction? Correct Ans-Group A fibers
In temporal summation, the postsynaptic neuron is stimulated by a large number of terminals
at the same time. Correct Ans-False
A subthreshold stimulus will generate an action potential away from the soma. Correct
Ans-False
What type of neuron is responsible for carrying impulses from the central nervous system to
an effector? Correct Ans-motor neurons
Match the following types of channels with their characteristics. Choices are used or not-at-
all.
, BIOS 260 Quiz 2 & HW: Questions and Answers 100%
Solved
1. When the neurotransmitter acetylcholine binds to a specific location on the extracellular
surface of this type of channel protein, the pore opens to allow select ions through.
2. The amino acids in the structure of the protein are sensitive to charge and cause the pore
to open to the selected ion.
3. When the local tissue temperature changes, the protein reacts by physically opening the
channel. Correct Ans-1. Chemically-gated channels
2. Voltage-gated channels
3. Mechanically-gated channels
Which of the following neurons has a characteristic of two processes that extends from each
end of the cell body, opposite to each other and can be found in the retina? Correct Ans-A
Different parts of the cerebral cortex have different functions. If a patient complains of not
being able to perceive taste, which part is likely to be affected? Correct Ans-insula
Match the following parts of the reflex arc with their function? Choices are used once or not-
at-all.
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