The correct Answer is A-3, B-4, C-1, D-2
Explanation
Blood pressure refers to the force exerted by circulating blood against the walls of the body's arteries, the major blood vessels. It is typically measured in millimeters of mercury (mm Hg) and has two main components: systolic and diastolic pressure.
Statement-wise Analysis
- A. Systolic pressure - 3. Pressure during ventricular contraction
Correct. Systolic pressure is the higher number in a blood pressure reading. It represents the pressure in the arteries when the heart ventricles contract and pump blood out into the body.
- B. Diastolic pressure - 4. Pressure during ventricular relaxation
Correct. Diastolic pressure is the lower number in a blood pressure reading. It represents the pressure in the arteries when the heart ventricles relax and fill with blood.
- C. Normal blood pressure - 1. 120/80 mm Hg
Correct. A blood pressure reading of 120/80 mm Hg is generally considered normal for a healthy adult. The first number (120) is the systolic pressure, and the second number (80) is the diastolic pressure.
- D. Sphygmomanometer - 2. Instrument used to measure blood pressure
Correct. A sphygmomanometer is a medical device used to measure blood pressure. It typically consists of an inflatable cuff, a measuring unit (manometer), and a mechanism for inflation.
Key Takeaway
Blood pressure is measured as systolic over diastolic pressure, reflecting ventricular contraction and relaxation, respectively, with a sphygmomanometer being the instrument used for its measurement.