A) Salivation
B) Eye opening and closing
C) Response to pinching pin in a frog leg
D) Sweating
Correct Answer: D
Solution :
Reflex action is an immediate involuntary response to a stimulus. In reflex action a sensory impulse reaching central nervous system is itself returned to an effector as a motor impulse without neuronal analysis and integration. The common examples are salivation, eye opening and closing, response to pinching pin in a frog leg, coughing, sneezing etc. Sweating (maintenance of body temperature) is regulated by autonomic nervous system. The autonomic nervous system itself has two sections, ie, sympathetic and parasympathetic nervous system.
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