PHYSIOLOGY
CENTRAL NERVOUS SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They provide a quick, involuntary response
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They prevent injury
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They are essential to the survival of organisms
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All of the above
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Detailed explanation-1: -A reflex action is an automatic (involuntary) and rapid response to a stimulus, which minimises any damage to the body from potentially harmful conditions, such as touching something hot. Reflex actions are therefore essential to the survival of many organisms.
Detailed explanation-2: -Answer: The advantages are: (i) This enables the body to give quick responses to harmful stimuli thus protecting the body. (ii) It minimizes overloading of brain. (iii) In many animals, reflex arcs have evolved as efficient ways of functioning in the absence of true thought processes.
Detailed explanation-3: -Reflex action is a sudden and involuntary response to stimuli. It helps organisms to quickly adapt to an adverse circumstance that could have the potential to cause bodily harm or even death. Pulling our hands away immediately after touching a hot or cold object is a classic example of a reflex action.
Detailed explanation-4: -There are different types of reflexes, including a stretch reflex, Golgi tendon reflex, crossed extensor reflex, and a withdrawal reflex.