12 Questions
Which type of neurons carry electrical signals from receptors to the CNS?
Sensory Neurons
Where are the cell bodies of sensory neurons located?
Outside the CNS in ganglia
Which part of a neuron carries impulses away from the cell body?
Axon
What is the main function of interneurons?
Carrying information between sensory and motor neurons
Which part of a neuron contains the nucleus and most of the cytoplasm?
Cell Body
How many axons does each neuron typically have?
One
What is the function of an interneuron?
Interconnect the sensory neuron with appropriate motor neuron
What is the role of Schwann cells in the peripheral nervous system?
Produce myelin for neurons
What do axon terminals contain at a synapse?
Neurotransmitter swellings
Where are the cell body and dendrites of sensory neurons located?
Outside of the spinal cord
What is the significance of synapses in neural transmission?
They ensure one-way transmission of impulses
What are receptors and effectors in the context of neurons?
Receptors detect stimuli, effectors bring about a response
Study Notes
Types of Neurons
- Sensory neurons carry electrical signals from receptors to the CNS.
Structure of Neurons
- Cell bodies of sensory neurons are located in dorsal root ganglia or in ganglia associated with cranial nerves.
- The axon carries impulses away from the cell body.
Cell Body
- The cell body (soma) contains the nucleus and most of the cytoplasm.
Interneurons
- Interneurons integrate and process information within the CNS.
- The main function of interneurons is to integrate and process information within the CNS.
Axons
- Each neuron typically has only one axon.
Synapses
- Axon terminals contain vesicles with neurotransmitters at a synapse.
- Synapses play a crucial role in neural transmission as they allow neurons to communicate with each other.
Peripheral Nervous System
- Schwann cells provide myelination and support to axons in the peripheral nervous system.
Receptors and Effectors
- Receptors detect stimuli, while effectors respond to stimuli in the context of neurons.
Learn about the 3 main types of neurons: Sensory Neurons, Motor Neurons, and Interneurons. Discover their functions and characteristics in transmitting electrical signals within the central nervous system.
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