Questions and Answers
What is the first step of a neural reflex?
Arrival of stimulus, activation of receptor.
What happens during step #2 of a neural reflex?
Activation of sensory neurons.
What occurs in step #3 of a neural reflex?
Information processing by postsynaptic cell.
What is the focus of step #4 in a neural reflex?
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What is the final step of a neural reflex?
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Study Notes
Steps of Neural Reflex
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Step 1: Arrival of Stimulus
- Initiates reflex action by detecting a stimulus at the receptor level.
- Involves physical or chemical changes in the environment that trigger the response.
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Step 2: Activation of Sensory Neurons
- Sensory neurons are activated leading to graded depolarization.
- This signal transmits sensory information towards the central nervous system.
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Step 3: Information Processing by Postsynaptic Cell
- The postsynaptic cell processes incoming signals.
- This processing results from neurotransmitter release, influencing the postsynaptic neuron's excitability.
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Step 4: Activation of Motor Neuron
- Motor neurons are activated and generate an action potential.
- This action potential carries the response signal away from the central nervous system to effectors.
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Step 5: Response of Peripheral Effector
- The final step involves the action of peripheral effectors such as muscles or glands.
- This results in a physiological response to the initial stimulus, completing the reflex arc.
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Description
Test your knowledge on the five crucial steps involved in a neural reflex. This quiz covers the arrival of stimuli, activation of neurons, and more. Perfect for students studying neuroscience or related fields.
