Final answer:
The four cardinal symptoms of Parkinson's disease are tremors, bradykinesia, rigidity, and postural instability, which are the result of the loss of dopamine-producing neurons in the brain. Therefore, the correct answer to the student's question is option B: Tremors, bradykinesia, rigidity, and postural instability.
Step-by-step explanation:
The four cardinal symptoms of Parkinson's disease are tremors, bradykinesia (slowness of movement), rigidity (muscle stiffness), and postural instability (balance problems). These symptoms are caused by the progressive loss of dopamine-producing neurons in a region of the brain known as the substantia nigra.
This loss impacts the patient's motor skills, leading to the characteristic signs of Parkinson's disease. While cognitive decline, such as memory loss and depression can also occur, these are not among the defining motor symptoms of the disease.
Parkinson's disease is a degenerative disorder of the central nervous system that mainly affects the muscular system and movement. The four cardinal symptoms of Parkinson's disease are tremors, bradykinesia (slowness of movement), rigidity, and postural instability. Tremor is the most common and obvious symptom, often occurring in a limb at rest.
Patients with Parkinson's disease also experience difficulty walking, and in advanced stages, may develop dementia and depression.
Therefore, the correct answer to the student's question is option B: Tremors, bradykinesia, rigidity, and postural instability.