name the given structure. what is its general function? mention the function of the parts labelled a and b these structures in animals are said to be more efficient to give quick responses. why?
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The given structure is a reflex arc.
The general function of a reflex arc is to carry a message from the central nervous system( CNS) to the effector organ. It relays reflex actions.
The part labelled A is an afferent or sensory neuron.
The part labelled B is a efferent or motor neuron.
It represents the path followed by nerve impulses in case of reflex action. It is efficient in providing a quick response as it does not route through the brain, instead, takes the route of the spinal cord. This happens by directly activating spinal motor neurons.
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