AP BIOLOGY

Detailed explanation-1: -What are normal blood pressure numbers? A normal blood pressure level is less than 120/80 mmHg. No matter your age, you can take steps each day to keep your blood pressure in a healthy range.

Detailed explanation-2: -The top number (systolic) minus the bottom number (diastolic) is the pulse pressure. For example, if the resting blood pressure is 120/80 millimeters of mercury (mm Hg), the pulse pressure is 40-which is considered a healthy pulse pressure. Generally, a pulse pressure greater than 40 mm Hg is unhealthy.

Detailed explanation-3: -Use 120 over 80, which is written as 120/80 mm Hg (millimeters of mercury), as an example. The “120” is the top number and is known as systolic blood pressure. It represents the pressure in your arteries when your heart beats. The “80” is the bottom number and is known as diastolic blood pressure.

Detailed explanation-4: -120/80 is considered “normal” or healthy blood pressure. The top number (120) is your systolic number. This is the amount of pressure in your arteries during the contraction of your heart. The bottom number (80) is your diastolic number.

Detailed explanation-5: -Normal: less than 120 systolic and 80 diastolic. Elevated: 120–129 systolic and less than 80 diastolic. Stage 1 hypertension: 130–139 systolic or 80–89 diastolic. Stage 2 hypertension: at least 140 systolic or at least 90 diastolic.