The Neuron: Self Assessment Questions
Dendritic spines are sites where neurons:
- Release neurotransmitter
- Receive inhibitory inputs from other neurons
- Receive excitatory inputs from other neurons
- Release trophic neuropeptides
Pseudounipolar neurons:
- Are the most common neuron type in the brain
- Have multiple dendrites emanating from the cell body
- Often send a projection through the posterior roots of the spinal cord
- Provide output signals from the central nervous system to motoneurons
Sensory afferent neurons:
- Typically are multipolar neurons
- Typically have their soma in the central nervous system
- Can have their peripheral axon in either a spinal or cranial nerve
- Directly control the contraction of muscle fibers
Axons of interneurons:
- Often provide direct outputs to muscle fibers
- Can provide outputs to multiple interneurons or efferent neurons
- Provide outputs to only a single interneuron
- Are always very short, and provide outputs to only nearby neurons
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