Please ...can you explain me what is reflex action ?

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.
Hope this helps,
Cheers!!

 

  • 14

relex  action is that     for eg;   when  we   touch   hot   thing  like  cup of hot  milk  we suddenly  leave  the  glass  becoz  of  our  sensitive  tissue  when  feels  that  it  was hot  it  will send the message  to  our  brain 

after that  brain  interpt  the  msg  and  take the  acton


  • 0

Reflex actions are such actions, which are instantaneous and are not judged by brain. The work of brain is done by spinal cord in this case.

  • -1

Reflex action is a sudden action in response to change in environment . The response in that case needs to be quick and instant and there is no thinking involved in it . It takes place through the reflex arc. Reflex arcs are formed in spinal chord . e.g. When we touch a hot vessel , we withdraw our hands. Receptor organ ( a sense organ ) and effector organ ( a muscle or a gland ) are also participated in this action. 

Have a nice day .

  • 0

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. 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.

  • 3
What are you looking for?