Question

Fill in the blank: The spinal reflex is a(n) ______ (beneficial) response as it allows for _____ ______ to harmful stimuli than would be possible if information had to travel all the way to the brain and back.

A) Adaptive, faster reactions
B) Detrimental, delayed responses
C) Involuntary, slower reactions
D) Unconscious, immediate responses

Answer 1

The spinal reflex is an adaptive response allowing for faster reactions to harmful stimuli, as it bypasses the brain, enabling immediate reactions.

Step-by-step explanation:

The spinal reflex is a(n) adaptive (beneficial) response as it allows for faster reactions to harmful stimuli than would be possible if information had to travel all the way to the brain and back. The correct answer is A) Adaptive, faster reactions.

Spinal reflexes, such as the quick withdrawal from a hot object, are examples of involuntary actions controlled by our autonomic nervous system (ANS). These reflexes happen at an unconscious level and are exceptionally rapid due to local synaptic connections. Such responses are beneficial as they conserve critical seconds during potentially harmful situations, enabling immediate reactions without the need for brain input.