9. What is a reflex action? Describe the steps involved in a reflex ac

1.	9. What is a reflex action? Describe the steps involved in a reflex action.
Answer» A reflex action is an unconscious, involuntary and instantaneous movement or response due to a stimuli. it does not require the involvement of the brain rather the use of nervous pathways known as reflex arcs. An example of a reflex action is the instant drawing back of the arm from a hot object. Here is how a reflex action takes place:Stimulus → receptor → sensory neurone → relay neurone → motor neurone → effector A stimulus is the agent causing neurotransmission. Stimulus evokes the functional reaction of part of body or organ that is required. An effector is any part of the body that produces the response. Examples of effectors are muscles that move the arm and glands that produce hormones.

9. What is a reflex action? Describe the steps involved in a reflex action.

Answer»

A reflex action is an unconscious, involuntary and instantaneous movement or response due to a stimuli. it does not require the involvement of the brain rather the use of nervous pathways known as reflex arcs.

An example of a reflex action is the instant drawing back of the arm from a hot object.

Here is how a reflex action takes place:Stimulus → receptor → sensory neurone → relay neurone → motor neurone → effector

A stimulus is the agent causing neurotransmission. Stimulus evokes the functional reaction of part of body or organ that is required.

An effector is any part of the body that produces the response. Examples of effectors are muscles that move the arm and glands that produce hormones.

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