Learn about the anatomy of the heart and how its chambers, valves, and vessels work together to maintain effective blood circulation throughout the body to sustain life.

Normal growth and healing is well ordered and precise. So, for example the cells know when: there are enough new cells to heal a cut, or; a structure such as a finger is fully grown; Cells send ...

A normal white blood cell range for adults is between 4,500 and 11,000 cells per microliter (μL). The ranges tend to be higher in children, and they are based on age.

Slightly elevated blood glucose within a range of what is generally considered “normal” may be associated with increased risk for heart disease, researchers reported. Gregg C. Fonarow, MD ...

Many people have high blood pressure. — P.R. Dear P.R.: The normal range for a platelet count is 150,000-450,000 per microliter, so 135,000 is just below the lower limit of normal.

How 'normal' blood test results can still mean you have a serious illness... but there is a way you can spot the hidden warning signs. By DR ROB GALLOWAY. Published: 06:26 EDT, 18 February 2025 ...