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 new guidelines categorise blood pressure as normal (<120/80 mm Hg), pre-hypertension (120/80 to 139/89), stage 1 hypertension (140/90 to 159/99), and stage 2 hypertension (≥160/100 or higher).

Detailed explanation-3: -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-4: -As a general guide: ideal blood pressure is considered to be between 90/60mmHg and 120/80mmHg. high blood pressure is considered to be 140/90mmHg or higher. low blood pressure is considered to be below 90/60mmHg.

Detailed explanation-5: -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.