GENERAL KNOWLEDGE

BLOOD PRESSURE IS HIGHER IN THE ARTERIES AS A RESULT OF

  • A. stress
  • B. contraction and relaxation ✓
  • C. blockage in the arteries
  • D. presence of valves

 

The answer to the question is: B. contraction and relaxation

Blood pressure is higher in the arteries as a result of contraction and relaxation.

When the heart contracts, it pumps blood into the arteries, causing an increase in pressure known as systolic pressure. This is the highest pressure in the arteries during each heartbeat. When the heart relaxes, the pressure in the arteries decreases, known as diastolic pressure. The combination of these two pressures is what is measured when blood pressure is taken.

The contraction and relaxation of the heart are essential for maintaining blood flow throughout the body. The pumping action of the heart ensures that oxygenated blood is delivered to all tissues and organs, while deoxygenated blood is returned to the lungs for re-oxygenation. This continuous cycle of contraction and relaxation maintains the necessary pressure within the arteries to facilitate this circulation.

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