Diagnosing Nervous System Disorders

Which of the following imaging tests is commonly used to diagnose nervous system disorders?

• Electroencephalography (EEG)

• Computed tomography (CT)

• Electromyography (EMG)

• Evoked Responses

What is the primary purpose of a spinal tap (lumbar puncture)?

• To measure the speed of nerve conduction

• To record the brain's electrical activity

• To withdraw cerebrospinal fluid for examination

• To stimulate specific areas of the brain

An increase in the number of white blood cells in the cerebrospinal fluid suggests which of the following conditions?

• Brain hemorrhage

• Infection or inflammation of the brain and spinal cord

• Multiple sclerosis

• Low intracranial pressure

Which of the following is a potential risk of performing a spinal tap when there is increased pressure within the skull?

• Seizure

• Herniation

• Muscle weakness

• Sleep disturbance

What is the purpose of using a manometer during a spinal tap?

• To inject a radiopaque contrast agent

• To measure the pressure within the skull

• To record electrical activity of the brain

• To stimulate nerve impulses

Which procedure is used to record the brain's electrical activity as wave patterns?

• Electromyography (EMG)

• Electroencephalography (EEG)

• Nerve conduction studies

• Angiography

In electromyography (EMG), what is recorded to assess muscle function?

• Electrical activity of the brain

• Speed of nerve conduction

• Electrical activity of the muscle

• Pressure within the skull

What condition might be indicated by slow nerve conduction in nerve conduction studies?

• Myasthenia gravis

• Carpal tunnel syndrome

• Brain tumor

• Idiopathic intracranial hypertension

Which of the following tests uses stimuli for sight, sound, and touch to activate specific areas of the brain?

• Evoked Responses

• Magnetic resonance imaging (MRI)

• Positron emission tomography (PET)

• Doppler ultrasonography

What is a common side effect experienced by about 1 in 10 people after a spinal tap?

• Seizure

• Low-pressure headache

• Muscle weakness

• Increased intracranial pressure