← Chapter 20
Anatomy & Physiology · Chapter 20

Blood Pressure

Blood pressure is highest as blood leaves the heart. It falls steadily as blood travels. This steady drop keeps blood moving. Tap a part of the trip.

Aorta & large arteries

pressure (mmHg) along the whole trip
Blood pressurethe drop that drives flow

Along the trip

A normal reading is about 120/80. The top number is systolic, the high point when the ventricles squeeze. The bottom number is diastolic, the low point when they relax.
📷 Reference image
A real labeled picture to compare with the activity above.
Blood Pressure reference figure
Blood Pressure — OpenStax, CC BY 4.0 (via Wikimedia Commons)