Micha got in a surfing accident where he hit his head on the bottom of the ocean floor. He survived but cannot move any body part below his neck. Most likely this accident damaged his _____________.

Question

BlackTom AI · Accepted Answer

When a person sustains a severe spinal injury that results in loss of movement below the neck, the damage is at or above the level that controls all four limbs.
Option 1: 'thoracic region of his spinal cord' would typically spare the arms and hands and primarily affect the trunk and legs, so it would not account for a lack of movement below the neck.
Option 2: 'lumbar region of his spinal cord' is far below the neck and would impact the legs and lower body, with intact function of the arms, which does not match the described inability to move anything below the neck.
Option 3: 'cervical region of his spinal cord' is the part that contains nerves controlling the arms, trunk, and legs; injury here can cause quadriplegia, matching the scenario of being unable to move below the neck.
Option 4: 'medulla' is part of the brainstem involved in autonomic and vital functions; while serious, damage specifically causing paralysis below the neck is more directly explained by cervical spinal cord injury rather than a primary brainstem lesion, and the question emphasizes motor block below the neck rather than brainstem signs.
In summary, the presentation aligns with damage to the cervical region of the spinal cord, which explains paralysis of all four limbs, whereas the other regions would produce different patterns of motor impairment.

Micha got in a surfing accident where he hit his head on the bottom of the ocean floor. He survived but cannot move any body part below his neck. Most likely this accident damaged his _____________.单项选择题

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