What are the 3 types of neurons and their functions?
Afferent "Sensory" Neuron
Interneuron "Associative Neuron"
Efferent "Motor" Neuron
The three basic types of neurons are represented in the Reflex Arc above.
The Afferent Neuron or Sensory Neuron receives information from the sensory receptors and carries the impulse from the sense receptors to the central nervous system. In this example the touch receptors in the skin are relaying information through the Afferent "Sensory" Neuron from the environment to the spinal cord.
The Interneuron or the Associative neuron is the transfer station or the decision making neuron. In the case of the reflex arc the Interneuron would make a decision to respond or not respond based upon the intensity of the stimulus.
The Efferent Neuron of Motor Neuron would then return the impulse back to the muscle or gland that would need to respond.
We have all had the doctor strike our patellar tendon with a rubber hammer. The Afferent "Sensory" Neuron receives the information of the force of the strike on our tendon. This information is relayed quickly up the neuron to the spinal cord where the Interneuron would decide if the stimulus warrants a response. If a response ins necessary the Efferent "Motor" Neuron returns the impulse to the muscle of the legs causing the lower leg to react.
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- Sensory neurons: Transmit sensory information from sensory organs to the central nervous system.
- Motor neurons: Carry signals from the central nervous system to muscles or glands, controlling movement or secretion.
- Interneurons: Facilitate communication between sensory and motor neurons within the central nervous system.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
- What is the difference between a motor and somatic response?
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- Is a cell body a part of a neuron?
- How many DNA molecules are present in a human somatic cell? How does protein synthesis occur?

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