The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
Excessive alcohol use costs the country approximately $235 billion every year.
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On average, the stomach produces 2 L of hydrochloric acid per day.
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People about to have surgery must tell their health care providers about all supplements they take.
Did you know?
As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.
How to read a phylogenetic tree.
Review of Systems ROS Cont.
A step stool can be used to assess the ability to use steps.
Step-by-Step Approach for Managing COPD
Step 2 of upper eyelid eversion
Literacy Development in the Early Years: Helping Children Read and Write