MCQ Detailed View

Blood pressure is the force that blood exerts on the walls of arteries as it moves through the circulatory system. It is an important vital sign that helps doctors assess the health of the heart and blood vessels. Blood pressure is always written in two numbers, for example 120/80 mmHg, where the first number represents the systolic pressure and the second number represents the diastolic pressure.

Systolic pressure is the pressure in the arteries when the heart beats and pushes blood out into the body. It is the higher of the two numbers because it measures the maximum force exerted on the arteries. Diastolic pressure is the pressure in the arteries when the heart is at rest between beats. It is the lower number and shows how much pressure the arteries experience when the heart is relaxed.

The notation “Systolic / Diastolic” is standard worldwide and is used by doctors, nurses, and medical devices like sphygmomanometers. For example, if a blood pressure reading is 120/80 mmHg, it means 120 mmHg is the systolic pressure and 80 mmHg is the diastolic pressure. Writing it the other way, such as Diastolic / Systolic, would be incorrect and confusing.

Blood pressure readings are essential for detecting conditions like hypertension, hypotension, and heart diseases. Understanding how to read and write blood pressure properly is basic knowledge in biology and human physiology.

By knowing the correct format, students can clearly interpret medical data, understand cardiovascular health, and apply this knowledge in everyday science studies.