Question

Where are relay neurons situated?
A. Effector
B. Spinal cord
C. Spinal nerve
D. Receptor

Answer 1

Hint: The neuron is the brain's fundamental working system, a specialised cell that transmits information to other nerve cells, muscle cells, and gland cells. Neurons are nerve cells that relay information to other nerve cells, muscle cells, and gland cells. A cell nucleus, an axon, and dendrites are all present in most neurons.

Complete answer:
Between sensory input and motor output/response are relay neurons. Sensory and motor neurons interact by relay neurons, which are located in the brain and spinal cord. Motor neurons are neurons that regulate muscle activity and are located in the central nervous system (CNS).
A relay neuron in the CNS's spinal cord receives electrical signals from a sensory neuron. Sensory neurons and motor neurons are linked by relay neurons.
How do relay neurons work?
A signal is detected by a skin receptor (the change in temperature).
A relay neuron in the CNS's spinal cord receives electrical signals from a sensory neuron. Sensory neurons and motor neurons are linked by relay neurons.
An effector receives electrical signals from a motor neuron.
A response is generated by an effector (muscle contracts to move hands away).

So, these are located in the spinal cord. Option B is the correct answer.

Note:
An interneuron is another name for a relay neuron. Relay neurons are signal relaying neurons located only in the brain, visual system, and spinal cord. These can be distinguished from other neurons by their short dendrites and long or short axons