Learning Behavior Specialist (LBS) 1 Practice Exam

A form of damage to the brain resulting from cut nerve pathways.

Shearing Contusion Revisualization Number Concepts

Correct Answer:

Shearing

Explanation:

Damage from rapid acceleration or deceleration tears axons as different parts of the brain move at different speeds, severing long nerve pathways. This tearing is called a shear injury and is characteristic of diffuse axonal injury, where widespread disruption of connections between brain regions occurs rather than a single localized bruise. A contusion, in contrast, is a bruise on brain tissue from direct impact, producing local bleeding and tissue damage rather than tearing of the axons. So the term that best describes damage due to cut nerve pathways is the shear injury, which captures the mechanism of axonal tearing across the brain's white matter.

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