Question

What is reflex action?explain the mechanism of reflex action with a suitable example.

Answer 1

The automatic action or response provoked by a stimulus is known as a reflex action. The reflex actions, however, show sudden responses and do not involve any thinking.

When we accidentally touch a hot object, we withdraw our hands immediately without thinking. If we do not do this, our hands will burn. The sensory nerves detect the heat. They are connected to the nerves, which move the muscles of the hand. Such a connection of detecting the signal from the nerves (input), and responding to it immediately (output) is called a reflex arc.

A reflex arc makes instant and automatic responses possible. It connects the input nerve and output nerve, and meets in a bundle in the spinal chord. In fact, nerves from all over the body meet in a bundle in the spinal cord, on their way to the brain. Therefore, the information input reaches the brain.

Answer 2

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Here's your answer mate

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Reflex action✍

The Automatic response of effector to a stimulus is called a reflex action

Examples:

1 withdrawal of hand and touching fire.

2 sneezing coughing or vomiting when nose larynx or pharynx for get irritated by foreign particles.

✰Hope it helps❢❢

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