How are reflex, actions classified ?

Explanation

There are two types of reflexes. They are :
1. Unconditional reflex is an inborn reflex for an unconditioned stimulus. It does not need any past experience, Knowledge or training to occur, Eg, Blinking of an eye when a dust particle about to fall into it, sneezing and coughing due to foreign particle enetering the nose or larynx.
2. Conditioned reflex is a respone to a stimulus that has been acquired by learning. This does not naturally exists in animasl. Only an experience makes it a part of the behaviour.
Eg , Exitement of salivary gland on seeing and smelling a food. The conditioned reflex was first demonstrated by the Russian physiologist Pavlov in his classical conditioning experiment in a dog. The cerebral cortex controls the coorditioned reflex.