Give three examples of reflex actions.
Examples of reflex actions are alter in size of the pupil of the eye in response to light intensity, blinking in response to foreign particles on the cornea, coughing or sneezing in response to irritation of the nasal passages and trachea or bronchi, knee jerk in response to a blow on the tendon of the leg extensor muscle, quick removal of the hand from a hot or sharp object.