A Patient Has Presented with an Abnormal Reflex Response

question 22

Multiple Choice

A patient has presented with an abnormal reflex response. In response to a flash of light, the patient will move his eyes towards the light but not turn his head. Which of the following may explain the condition?

• A) The patient has damage to the accessory nerve (XI), affecting his ability to reflexively turn his head.
• B) The patient has damage to the oculomotor nerve (III), affecting his ability to coordinate eye movement and head movement.
• C) The patient has damage to his trochlear nerve (IV), accentuating his ability to move his eyes and rendering the need to move the head unnecessary.
• D) The patient has damage to the occipital lobe of the cerebrum, causing him to be blind to the flash of light.

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Definitions:

Poisson Process

A statistical process modeling the occurrence of events in a fixed interval of time or space if these events happen with a known constant mean rate and independently of the time since the last event.

Mean Arrival Rate

The average rate at which entities arrive in a system per unit of time, commonly used in queueing theory.

Mean Interval Time

The average time period between occurrences in a sequence of events or measurements.

Poisson Process

A stochastic process that models the occurrence of events randomly distributed in time or space.