Why are reflex arc connections between input and output nerve made at spinal cord?a)Because brain is involved in complex thinkingb)Because brain does not respond fast enoughc)Because spinal cord is the point where they first meet each otherd)Because making them in brain will decrease the time of responseCorrect answer is option 'C'. Can you explain this answer?

Question

Answer

C) because spinal cord is the point where they first meet each other spinal cord act as a p.a of brain and 90percent decision of reflex action is taken by spinal cord.

Answer

C is right these app.has to wrong

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It is the only exception in metals which is liquid at room temperature because metals have a tendency to remain hard i.e. they have high tensile strength...hope this helps

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Because all nerves mainly attach to spinal and connected brain and information

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Spinal cord being the protruded part of brain ,serves the function similar to brain ..however it is related only to reflex actions and it responds for the organs situated somewhat more distant from brain than spinal cord....and since sensory nerves get message here during course of function then the responding nerve I.e motor neuron emerges from here and thats why spinal cord is the site of their junction....

It can be explained further ...Can ask if dont get

Answer

Introduction:
The reflex arc is a neural pathway that allows for a rapid, automatic response to a stimulus without conscious thought. It involves the sensory input, the central processing in the nervous system, and the motor output. In the case of simple reflexes, such as the withdrawal of a hand from a hot object, the connections between input and output nerves are made at the spinal cord rather than the brain.

Explanation:
1. Brain involvement in complex thinking:
- The brain is responsible for complex cognitive processes such as reasoning, decision making, and problem solving.
- If the reflex arc connections were made in the brain, it would involve unnecessary cognitive processing for simple reflexive actions.
- The involvement of the brain in simple reflexes would lead to delays in response time, as the brain needs more time to process information compared to the spinal cord.

2. Speed of response:
- The primary reason for reflex arc connections being made at the spinal cord is the need for a rapid response to certain stimuli.
- The spinal cord is closer to the site of the stimulus and has shorter neural pathways compared to the brain.
- By bypassing the brain and connecting the input and output nerves directly at the spinal cord, the response time is significantly reduced.
- This allows for quick actions, such as pulling away from a painful stimulus or blinking to protect the eyes from sudden bright light.

3. Point of convergence:
- Another reason for reflex arc connections being made at the spinal cord is that it is the point where the sensory and motor nerves first meet each other.
- The sensory input from the peripheral nerves enters the spinal cord through the dorsal root, while the motor output exits through the ventral root.
- The spinal cord acts as a central processing unit for reflexes, integrating the sensory information and generating an immediate motor response.

4. Decreased response time:
- By making the reflex arc connections at the spinal cord, the time taken for information to travel from the sensory receptors to the brain and back to the effectors is minimized.
- This direct connection allows for a faster response, which is crucial in situations where a quick reaction is necessary for self-preservation or protection.

Conclusion:
The reflex arc connections between input and output nerves are made at the spinal cord because the brain is involved in complex thinking, the spinal cord is the point of convergence for sensory and motor nerves, and making the connections in the brain would result in a slower response time. By bypassing the brain and connecting directly at the spinal cord, the reflex arc allows for quick, automatic responses to stimuli.

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