Multiple Choice
The opening of which type of channel causes depolarization of the neuron?
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9. Transport Across Membranes
Ion Channels and Neurons
Multiple Choice
Which part of a neuron contains the nucleus?
A
Axon terminal
B
Myelin sheath
C
Cell body (soma)
D
Node of Ranvier
Verified step by step guidance1
Understand the basic structure of a neuron, which includes the cell body (soma), dendrites, axon, myelin sheath, axon terminals, and nodes of Ranvier.
Recall that the nucleus, which contains the cell's genetic material, is located in the part of the neuron responsible for maintaining cell functions and integrating signals.
Identify that the cell body (soma) is the central part of the neuron where the nucleus resides, as it contains the organelles necessary for cell maintenance.
Recognize that the axon terminal is involved in transmitting signals to other neurons, the myelin sheath insulates the axon, and the nodes of Ranvier are gaps in the myelin sheath, none of which contain the nucleus.
Conclude that the correct answer is the cell body (soma) because it houses the nucleus.
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