Multiple Choice
In the central nervous system (CNS), which type of glial cell is the most abundant?
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9. Transport Across Membranes
Ion Channels and Neurons
Multiple Choice
Which type of cell is structurally adapted for transmitting rapid electrical messages over long distances in the body?
A
Skeletal muscle fiber
B
Erythrocyte (red blood cell)
C
Hepatocyte (liver cell)
D
Neuron (nerve cell)
Verified step by step guidance1
Step 1: Understand the function of each cell type listed. Skeletal muscle fibers are specialized for contraction and movement, erythrocytes transport oxygen, and hepatocytes perform metabolic and detoxification functions in the liver.
Step 2: Recognize that transmitting rapid electrical messages over long distances requires specialized structures such as axons and dendrites, which are characteristic of neurons.
Step 3: Recall that neurons have unique adaptations like myelinated axons that increase the speed of electrical signal transmission, enabling rapid communication throughout the body.
Step 4: Compare the structural features of neurons with other cell types and note that only neurons possess the necessary components for electrical signal propagation.
Step 5: Conclude that the cell type structurally adapted for transmitting rapid electrical messages over long distances is the neuron (nerve cell).
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