Pressure in a narrowed artery
Blood flows through an artery with a narrowed segment (stenosis). Compared with the wider part, the blood in the narrow segment has:
Answer C: explanation for every choice
A
This is the reverse of what continuity requires.
B
Higher speed corresponds to lower pressure, not higher.
C
Correct. Continuity requires faster flow through a smaller area, and Bernoulli's principle links higher speed to lower pressure.
D
Flow must speed up in the narrower segment.
TakeawayNarrower → faster (continuity) → lower pressure (Bernoulli).
Equations usedContinuity equationBernoulli's equation
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