Question

Briefly explain the following term ‘reflex action’.

Answer 1

Reflex action:

1. A spontaneous, automatic, involuntary, response to a stimulus that occurs without any conscious effort or thought and requires the involvement of the CNS, is known as the reflex action.
2. There are two types of reflex action a. Unconditioned or inborn reflexes and b. Conditioned or acquired reflexes.
3. The neural pathway of reflex action is known as the reflex arc.
4. A reflex arc is consists of five parts i.e, Receptors, sensory nerves, CNS (spinal cord and brain), motor nerves, and effector organs are five

Examples:

1. The sudden closing of eyes when flashed with a high-intensity light.
2. Secretion of saliva on seeing or smelling food etc.