Multiple Choice
Which nutrient is directly involved in the generation of action potentials in neurons by contributing to the depolarization phase?
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45. Nervous System
Neurons and Action Potentials
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Most metabolic and regulatory functions in a neuron occur in which part of the cell?
A
Myelin sheath
B
Dendrite
C
Axon terminal
D
Cell body (soma)
Verified step by step guidance1
Understand the structure of a neuron: A neuron consists of several parts, including the cell body (soma), dendrites, axon, axon terminals, and myelin sheath. Each part has specific functions.
Learn the role of the cell body (soma): The cell body contains the nucleus and most of the organelles, such as mitochondria and the endoplasmic reticulum, which are responsible for metabolic and regulatory functions like energy production and protein synthesis.
Compare the functions of other parts of the neuron: The dendrites receive signals from other neurons, the axon transmits signals away from the cell body, the axon terminals release neurotransmitters, and the myelin sheath insulates the axon to speed up signal transmission.
Identify the part of the neuron responsible for metabolic and regulatory functions: Since these functions require organelles like the nucleus and mitochondria, they occur in the cell body (soma).
Conclude that the cell body (soma) is the correct answer because it is the central hub for maintaining the neuron's health and functionality through metabolic and regulatory processes.
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