Question

Why does blood pressure drop in the capillaries?

Answer 1

Blood pressure drop in capillaries:

1. Blood pressure is said to be the force exerted by the blood against the arteries.
2. The normal range of blood pressure is 90 – 120 / 60 – 80 mm Hg.
3. Here 120, is the systolic pressure and 80 is the diastolic pressure.
4. Blood flow to the downstream capillaries is reduced as a result of arterioles narrowing or constricting, which raises resistance.
5. The dilatation of arterioles increases blood flow to the downstream capillaries, and some reduction in blood pressure causes a decrease in resistance.
6. Therefore, there is a blood pressure drop in the capillaries due to the dilatation of arterioles, which increases blood flow to the downstream capillaries.