Answer :
Final answer:
Neurodegenerative disorders are conditions characterized by neuronal death, leading to loss of nervous system function over time. Key examples include Alzheimer's disease, Parkinson's disease, and Multiple sclerosis. Therefore, the correct answer is option d) All of the above.
Explanation:
Neurodegenerative disorders encompass a group of illnesses marked by a decline in nervous system functionality, typically stemming from the death of neurons. These conditions exhibit a progressive nature, with symptoms worsening as more neurons succumb. The specific manifestations of each disorder depend on the location within the nervous system where neuronal loss occurs.
Alzheimer's disease, a prevalent neurodegenerative disorder, manifests as a gradual deterioration of higher cerebral functions, making it the primary cause of senile dementia. Parkinson's disease, another notable condition, stems from the degeneration of neurons in the substantia nigra, leading to reduced dopamine production and resulting in motor impairments.
Multiple sclerosis, characterized as an autoimmune disease, targets myelin, causing various neurological symptoms. Understanding these disorders is crucial for developing effective treatments, as they pose significant challenges to both patients and healthcare providers due to their chronic and debilitating nature.
