POSED BY MODELS. Blood pressure measurement. General practice doctor taking the blood pressure of a young man. The instrument used is a sphygmomanometer (seen on patient's arm). A cuff is inflated around the upper arm until it is tight enough to stop the flow of blood in the main artery. This pressure is recorded as the systolic pressure of the pumping heart. The cuff is then deflated, to give the diastolic pressure of the relaxed heart between pumps. Blood pressure is expressed as a difference between these two measurements, in millimetres of mercury (mm Hg). Although blood pressure varies over the day, it is an important measure of bodily health.

Photo website with Rights Managed and Royalty Free stock photos, images, illustrations and footage available for download immediately for commercial and editorial uses. Aflo is a leading independent supplier and producer of stock pictures and visual content. Search and find high quality images and video for design, print, web-use and publishing. Buy photos from our extensive collection of model released and property released sports images. Search some of the most beautiful travel and landscape pictures from our own photographers and license from our large collection of content, modern and archive, focusing on Japan. We provide free research. Register for personal account management and for full use of our Stock Photography website and start to download images now.