OpenStax
Open Stax: Anatomy & Physiology: Acid Base Balance
Students learn how buffer systems in the body - the respiratory and the renal - affect the blood pH.
OpenStax
Open Stax: Anatomy & Physiology: Physical Characteristics of Urine
Students learn the chemical make-up and pH of urine in the human body.
Other
American Red Cross: Donating Blood: Type of Donations: Plasma Donation
Describes how plasma, a blood component, is used in the medical treatment of many illnesses, including autoimmune diseases. Includes a list of facts and frequently asked questions about donations, along with information for potential...
PBS
Pbs: Who Made America?: Innovators: Charles Richard Drew
One-page profile of influential innovator, Charles Drew, whose vision and ideas created the blood bank by revolutionizing the understanding of blood plasma.
US National Library of Medicine
Medline Plus: Blood Transfusion
This site explains situations which call for blood transfusions and describes possible safety risks of this procedure. It describes how this procedure occurs and provides a discussion of possible blood substitutes.