A patient presents with symptoms of a condition known as 'Raynaud's phenomenon.' Which of the following physiological changes is primarily responsible for this condition?
Q1. A patient presents with symptoms of a condition known as 'Raynaud's phenomenon.' Which of the following physiological changes is primarily responsible for this condition?
Answer: Impaired vasoregulation of digital arteries
Explanation: Raynaud's phenomenon is characterized by impaired vasoregulation of digital arteries, leading to vasospasm and decreased blood flow to the hands and feet.