thinking is a complex activity. give reason
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Answer:
Explanation:
Thinking is a complex activity, so it is bound to involve a complicatedinteraction of many nerve impulses from many neurons.If this is the case, it is no surprise that the thinking tissue in ourbody consists of dense networks of intricately arranged neurons. It sitsin the forward end of the skull, and receives signals from all over thebody which it thinks about before responding to them. Obviously, inorder to receive these signals, this thinking part of the brain in the skullmust be connected to nerves coming from various parts of the body.Similarly, if this part of the brain is to instruct muscles to move, nervesmust carry this signal back to different parts of the body. If all of this isto be done when we touch a hot object, it may take enough time for us toget burnt!How does the design of the body solve this problem? Rather thanhaving to think about the sensation of heat, if the nerves that detect heatwere to be connected to the nerves that move muscles in a simpler way,the process of detecting the signal or the input and responding to it byan output action might be completed quickly. Such a connection iscommonly called a reflex arc (Fig. 7.2). Where should such reflex arcconnections be made between the input nerve and the output nerve?The best place, of course, would be at the point where they first meeteach other. Nerves from all over the body meet in a bundle in the spinalcord on their way to the brain. Reflex arcs are formed in this spinal corditself, although the information input also goes on to reach the brain.Of course, reflex arcs have evolved in animals because the thinkingprocess of the brain is not fast enough. In fact many animals have verylittle or none of the complex neuron network needed for thinking. So it isquite likely that reflex arcs have evolved as efficient ways of functioningin the absence of true thought processes. However, even after complexneuron networks have come into existence, reflex arcs continue to bemore efficient for quick responses.
Why is thinking a complex activity?
✍️Thinking is a complex activity, so it is bound to involve a complicated interaction of many nerve impulses from many neurons.
✍️If this is the case, it is no surprise that the thinking tissue in our body consists of dense networks of intricately arranged neurons.
✍️It sits in the forward end of the skull, and receives signals from all over thebody which it thinks about before responding to them.
✍️Obviously, in order to receive these signals, this thinking part of the brain in the skull must be connected to nerves coming from various parts of the body.
✍️Similarly, if this part of the brain is to instruct muscles to move, nervesmust carry this signal back to different parts of the body.
✍️Rather than having to think about the sensation of heat, if the nerves that detect heatwere to be connected to the nerves that move muscles in a simpler way, the process of detecting the signal or the input and responding to it byan output action might be completed quickly.
✍️Such a connection is commonly known as a reflex arc.
✍️Nerves from all over the body meet in a bundle in the spinalcord on their way to the brain.
✍️Reflex arcs are formed in this spinal corditself, although the information input also goes on to reach the brain.
✍️Of course, reflex arcs have evolved in animals because the thinking process of the brain is not fast enough.
✍️In fact, many animals have very little or none of the complex neuron network needed for thinking.
✍️So, it is quite likely that reflex arcs have evolved as efficient ways of functioningin the absence of true thought processes.
✍️However, even after the complex neuron networks have come into existence, reflex arcs continue to be more efficient for quick responses.
✍️Therefore, thinking is a very complex process involving many actions in the body.