NEET PG DENTAL EXAM

Detailed explanation-1: -A reflex is an involuntary and nearly instantaneous movement in response to a stimulus. The reflex is an automatic response to a stimulus that does not receive or need conscious thought as it occurs through a reflex arc.

Detailed explanation-2: -Answer and Explanation: False. A reflex is an involuntary response to a harmful stimulus.

Detailed explanation-3: -The correct option is A True. Reflex action: Reflex action is an immediate and involuntary action taken against a certain stimulus. It is under the control of the spinal cord and is not controlled by the brain.

Detailed explanation-4: -A reflex action is a rapid and spontaneous action in response to any stimulus. When sudden responses are required, instructions are given mostly by the spinal cord itself.So a reflex action is an involuntary action performed by muscles mostly under the direction of the spinal cord in response to the stimulus.