Podcast
Questions and Answers
What characteristic distinguishes unipolar neurons from bipolar neurons?
What characteristic distinguishes unipolar neurons from bipolar neurons?
- Unipolar neurons have multiple dendrites, while bipolar neurons have only one.
- Unipolar neurons can undergo division, while bipolar neurons cannot.
- Unipolar neurons have one pole, while bipolar neurons have two poles. (correct)
- Unipolar neurons are found only in adults, while bipolar neurons are present in embryos.
Which statement accurately describes multipolar neurons?
Which statement accurately describes multipolar neurons?
- Multipolar neurons generate impulses more quickly than unipolar neurons.
- Multipolar neurons can only be found during embryonic development.
- Multipolar neurons possess a single pole with both axon and dendrites.
- Multipolar neurons typically have more than two dendrites and one axon. (correct)
What main structural feature do neurons lack that distinguishes them from most other body cells?
What main structural feature do neurons lack that distinguishes them from most other body cells?
- Cell membrane
- Cytoplasm
- Centrosome (correct)
- Nucleus
How are neurons categorized based on the length of their axons?
How are neurons categorized based on the length of their axons?
During which developmental stage are unipolar neurons typically found?
During which developmental stage are unipolar neurons typically found?
Which of the following correctly describes the poles of bipolar neurons?
Which of the following correctly describes the poles of bipolar neurons?
What is the primary role of dendrites in neurons?
What is the primary role of dendrites in neurons?
Flashcards
Unipolar Neuron
Unipolar Neuron
A neuron with one pole from which both the axon and dendrite emerge.
Bipolar Neuron
Bipolar Neuron
A neuron with two poles; one for axon, one for dendrite.
Multipolar Neuron
Multipolar Neuron
A neuron with multiple poles. One for axon, others for dendrites.
Neuron
Neuron
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Axon
Axon
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Dendrite
Dendrite
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Neuron Classification - Poles
Neuron Classification - Poles
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Study Notes
Neuron Introduction
- Neurons are the structural and functional units of the nervous system
- Similar to other cells, they contain a nucleus and organelles in the cytoplasm
- Different from other cells because they have branches called axons and dendrites
- Neurons lack a centrosome, preventing cell division
Neuron Classification
- Neurons are categorized by different methods, including the number of poles
- Three types of neurons based on the number of poles:
- Unipolar neurons: Possess only one pole, with both axon and dendrite originating from it
- Bipolar neurons: Have two distinct poles, one for the axon, and one for the dendrites
- Multipolar neurons: Have multiple poles, with one designated for the axon and the rest for dendrites
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