In humans, what is the value of normal systolic and diastolic blood pressure respectively?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4: 120 mm Hg and 80 mm Hg, respectively.
Explanation:
The normal blood pressure of a healthy adult human is 120/80 mmHg. The significance of these two blood pressure values is as follows:
Systolic Blood Pressure – 120 mmHg: This is the pressure exerted when the heart muscles contract and pump blood into the arteries. It represents the maximum value of blood pressure.
Diastolic Blood Pressure – 80 mmHg: This is the pressure exerted when the heart muscles relax between two beats and the heart refills with blood. It represents the minimum value of blood pressure.
Additional Facts:
- Sphygmomanometer: The instrument used to measure blood pressure is called a sphygmomanometer.
- Hypertension (High Blood Pressure): If blood pressure consistently remains at 140/90 mmHg or higher, it is referred to as 'High Blood Pressure'.
- Hypotension (Low Blood Pressure): If it drops below 90/60 mmHg, it is referred to as 'Low Blood Pressure'.
- Unit: Blood pressure is measured in millimeters of mercury (mmHg), where 'Hg' is the chemical symbol for Mercury.
Potential Questions for Upcoming Exams:
Question: What is the name of the instrument used to measure blood pressure?
Answer: Sphygmomanometer.
Question: Which hormone is known as the 'Fight or Flight' hormone and can increase blood pressure?
Answer: Adrenaline.
Question: Between arteries and veins, in which does the blood pressure tend to be higher?
Answer: In arteries.