NEET PG DENTAL EXAM

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BRAIN

SPINAL CORD

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
When you flick a spider off of your arm, this causes a reflex which happens at the ____ level without having the brain process the impulse first.
A
Brain Stem
B
Frontal Lobe
C
Spinal Cord and Parietal Lobe
D
Spinal Cord
Explanation: 

Detailed explanation-1: -A reflex arc is a connection between perceiving the signal from the nerves and promptly responding to it. In a reflex action, the brain plays no part. The spinal cord, which reacts without thinking about how to respond to stimuli, is in charge of these automatic actions. It elicits no meaningful response in the brain.

Detailed explanation-2: -Spinal reflexes include the stretch reflex, the Golgi tendon reflex, the crossed extensor reflex, and the withdrawal reflex.

Detailed explanation-3: -Spinal cord reflexes are simple behaviors produced by central nervous system (CNS) pathways that lie entirely within the spinal cord. The sensory afferent fibers that evoke these reflexes enter the spinal cord and activate spinal motor neurons directly or through a chain of one or more spinal interneurons.

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