Consider a situation where blood flows through a section of a horizontal artery that is partially blocked by a reservoir along the wall of the artery. A hemoglobin molecule moves from the narrow region to the wider region. What happens to the pressure acting on the molecule? Explain with fundamentals of fluid physics.

Consider a situation where blood flows through a section of a horizontal artery that is partially blocked by a reservoir along the wall of the artery. A hemoglobin molecule moves from the narrow region to the wider region. What happens to the pressure acting on the molecule? Explain with fundamentals of fluid physics.