The newly oxygen-rich blood (shown in red) returns to the heart and enters the left atrium. Blood flows through the left atrium into the left ventricle. The left ventricle pumps the oxygen-rich ...

Medically reviewed by Anisha Shah, MDUsing a blood pressure chart by age can help you interpret your results to see how they compare to the normal ranges across groups, and within your own age cohort.

only allows blood to pass through one cell at a time Other features Thick muscular walls to withstand blood flowing at high pressure as it leaves the heart; the largest artery is the aorta Contain ...