Multiple Choice
Which process enhances the transmission of action potentials at existing synapses?
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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
Which type of neuron is characterized by a single axon and a single dendrite extending from opposite ends of the cell body?
A
Multipolar neuron
B
Unipolar neuron
C
Pyramidal neuron
D
Bipolar neuron
Verified step by step guidance1
Step 1: Understand the structure of a neuron. Neurons are specialized cells that transmit electrical signals in the nervous system. They typically consist of a cell body (soma), dendrites (which receive signals), and an axon (which sends signals).
Step 2: Learn the classification of neurons based on their structure. Neurons are categorized as multipolar, unipolar, bipolar, or pyramidal based on the number and arrangement of axons and dendrites.
Step 3: Define a bipolar neuron. A bipolar neuron is characterized by having one axon and one dendrite extending from opposite ends of the cell body. This structure is commonly found in sensory organs such as the retina of the eye.
Step 4: Compare the other neuron types. Multipolar neurons have multiple dendrites and one axon, unipolar neurons have a single process that splits into two branches, and pyramidal neurons are a subtype of multipolar neurons with a pyramid-shaped cell body.
Step 5: Conclude that the correct answer is 'bipolar neuron' because it matches the description of having a single axon and a single dendrite extending from opposite ends of the cell body.
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