Absolute Reflex:

An absolute reflex is an involuntary reaction or response that occurs automatically in response to a specific stimulus without involvement or conscious control of the brain.

Characteristics of Absolute Reflex:

• Involuntary: Absolute reflexes happen automatically and are not under conscious control.
• Innate: These reflexes are present at birth and do not need to be learned or acquired.
• Rapid: Absolute reflexes occur quickly, often within milliseconds of the stimulus.
• Fixed: The response produced in an absolute reflex is stereotypical and predictable.
• Protective: Many absolute reflexes serve a protective function, helping to prevent harm to the body.

Examples of Absolute Reflexes:

• Eyeblink Reflex: The automatic closing of eyelids in response to a sudden bright light or an object approaching the eye.
• Sneeze Reflex: A forceful expulsion of air through the mouth and nose triggered by irritation of the nasal passages.
• Startle Reflex: A sudden, involuntary response to a loud noise or unexpected touch, characterized by a sudden movement of the body.
• Knee-Jerk Reflex: The involuntary extension of the leg in response to a tap on the patellar tendon, tested by tapping the knee with a reflex hammer.