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A nurse explains that light stimulates photoreceptors, leadi…

A nurse explains that light stimulates photoreceptors, leading to nerve impulses traveling to the brain. These signals ultimately travel through the optic nerve. Which cranial nerve carries visual information?

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A student reviews the structures connecting the cerebral hem…

A student reviews the structures connecting the cerebral hemispheres. The instructor explains that a large commissural tract allows communication between the two sides. Which structure connects the cerebral hemispheres?

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A patient asks how sound travels through the ear. The nurse…

A patient asks how sound travels through the ear. The nurse explains that vibrations pass through the external, middle, and inner ear. Which structure vibrates first in response to sound waves?

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During neurological examination, the patient gags when the p…

During neurological examination, the patient gags when the posterior pharynx is stimulated with a tongue depressor. The nurse recognizes this as an intact cranial reflex. Which reflex is being tested?

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A patient smells smoke and quickly recognizes danger. The nu…

A patient smells smoke and quickly recognizes danger. The nurse explains that olfactory information is processed in specific brain regions. Which lobe is strongly associated with olfactory processing?

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A nursing student is reviewing sensory receptors before an e…

A nursing student is reviewing sensory receptors before an exam. The instructor explains that receptors are specialized in responding to specific stimuli. Which receptor responds primarily to pain?

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A patient asks why cerebrospinal fluid is important for brai…

A patient asks why cerebrospinal fluid is important for brain health. The nurse explains that CSF cushions the CNS and helps maintain a stable environment. What is a major function of cerebrospinal fluid?

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A patient with brainstem injury has impaired consciousness a…

A patient with brainstem injury has impaired consciousness and difficulty maintaining alertness. The healthcare provider suspects dysfunction of the reticular activating system. What is the primary role of the RAS?

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During assessment, a patient cannot shrug their shoulders ag…

During assessment, a patient cannot shrug their shoulders against resistance after neck trauma. The nurse suspects injury to the accessory nerve. Which cranial nerve is affected?

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A patient suffers injury to the frontal lobe after trauma. T…

A patient suffers injury to the frontal lobe after trauma. The nurse expects deficits involving reasoning and voluntary motor activity. Which function is associated with the frontal lobe?

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