Pathway from receptor to effector in which conscious part of brain is not involved is the:
Correct answer: A. Reflex arc
- A. Reflex arc
- B. Sensory pathway
- C. Motor pathway
- D. Somatosensory pathway
Explanation
A reflex, is an involuntary and nearly instantaneous movement in response to a stimulus.A reflex arc is a neural pathway that controls a reflex. In vertebrates, most sensory neurons do not pass directly into the brain, but synapse in the spinal cord. This allows for faster reflex actions to occur by activating spinal motor neurons without the delay of routing signals through the brain.
This question appeared on the NUMS 2021 paper, which you can sit online with every answer explained.
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About Reflexes and the Reflex Arc
A reflex arc shows how a rapid, automatic response travels from a receptor through a sensory neuron, relay neuron and motor neuron to an effector. The topic covers synapses, the spinal cord's role, and the difference between an involuntary reflex action and a slower voluntary response.
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The reflex arc, which is made of two neurons is known as:
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