A patient with hypoesthesia has damage to the _____ horn.

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BlackTom AI · Accepted Answer

The question asks about a patient with hypoesthesia and asks which horn is damaged. 
Option 1: Dorsal. The dorsal (posterior) horn of the spinal cord carries sensory afferent information from peripheral receptors into the spinal cord. Damage here can lead to sensory deficits such as hypoesthesia, which aligns with the symptom described. 
Option 2: anterior. The anterior (ventral) horn primarily contains motor neurons that project to skeletal muscles. Lesions here typically cause motor deficits or paralysis rather than sensory loss, so this is not consistent with hypoesthesia. 
Option 3: ventral. This term is synonymous with the anterior horn in many anatomical descriptions, reinforcing the motor role; again, lesions would more likely cause weakness or paralysis rather than sensory hypoesthesia. 
Option 4: superior. This term refers to a relative position and is not a named horn of the spinal cord. Since hypoesthesia is a sensory deficit, indicating a specific neural structure, selecting 'superior' would be anatomically inaccurate. 
In summary, the dorsal horn is the site associated with sensory processing, matching the symptom of hypoesthesia, whereas the other options point to motor pathways or non-specific positional terms that do not explain sensory loss.

BIOL 251 Module 6 Problem Set

A patient with hypoesthesia has damage to the _____ horn.

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