What is reflex action? Explain reflex arc with the help of flow chart.
Answers
A reflex action is an involuntary action, that takes place in response to a stimulus. It is a process in which a reflex arc reaches the brain when an action is performed by the impulses of neuron cells.
A reflex action is an involuntary action, that takes place in response to a stimulus. It is a process in which a reflex arc reaches the brain when an action is performed by the impulses of neuron cells.These neuron cells carry the message from one part of the body to the other and help to communicate between the brain and other body parts. For example, pulling out your hand from the flame if it gets touched accidentally.
A reflex action is an involuntary action, that takes place in response to a stimulus. It is a process in which a reflex arc reaches the brain when an action is performed by the impulses of neuron cells.These neuron cells carry the message from one part of the body to the other and help to communicate between the brain and other body parts. For example, pulling out your hand from the flame if it gets touched accidentally.Below is the pathway of reflex action.
A reflex action is an involuntary action, that takes place in response to a stimulus. It is a process in which a reflex arc reaches the brain when an action is performed by the impulses of neuron cells.These neuron cells carry the message from one part of the body to the other and help to communicate between the brain and other body parts. For example, pulling out your hand from the flame if it gets touched accidentally.Below is the pathway of reflex action.Receptors → sensory neuron → spinal cord → motor neuron → effector.
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Answer:
Represent the reflex arc with the help of a neat flow chart. Reflex arc is the pathway of nerve impulses that are generated at the receptor due to stimulus to reach the effector organ when a reflex action is performed. It has following components: A receptor which receives the stimulus.
Sensory or nerve fibres which transmit sensory impulses generated by the receptor, to the central nervous system.
Part of central nervous system which may be spinal cord or brain
Motor or efferent nerve fibres which carry the motor impulses generated in the central nervous system, to specific effectors.
Effector organ which is activated by the motor impulse to response to the stimulus.
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