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1. www.britannica.com › science › blood-biochemistryBlood | Definition, Composition, & Functions | Britannica

   www.britannica.com › science › blood-biochemistry

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   May 20, 2024 · Blood, fluid that transports oxygen and nutrients to cells and carries away carbon dioxide and other waste products. Blood contains specialized cells that serve particular functions. These cells are suspended in a liquid matrix known as plasma. Learn more about the components and function of blood.

2. www.britannica.com › science › blood-vesselBlood vessel | Definition, Anatomy, Function, & Types ...

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   May 17, 2024 · Blood vessel, a vessel in the human or animal body in which blood circulates. The vessels that carry blood away from the heart are called arteries. Veins are vessels that return blood to the heart. Learn more about the anatomy and types of blood vessels and the diseases that affect them.

   • Author: The Editors of Encyclopaedia Britannica

3. en.wikipedia.org › wiki › Circulatory_systemCirculatory system - Wikipedia

   en.wikipedia.org › wiki › Circulatory_system

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   3 days ago · Blood is a fluid consisting of plasma, red blood cells, white blood cells, and platelets; it is circulated around the body carrying oxygen and nutrients to the tissues and collecting and disposing of waste materials.

4. patient.info › news-and-features › what-is-a-fullWhat is a full blood count? - Patient

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   May 20, 2024 · What is tested in a full blood count? Instead, if your full blood count indicates that a certain blood cell is abnormally high or low, this may indicate infection, anaemia, or other more serious diseases. Depending on the results, your doctor may then request more tests to confirm a diagnosis.

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5. www.verywellhealth.com › mean-corpuscularRed Blood Cell Count: Understanding MCV, MCH, RDW, and More

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   May 3, 2024 · As per its name, it simply counts the number of red blood cells in a sample of blood. The RBC count is measured in millions of cells per microliter (one-millionth of a liter), or cells/mcL. A normal RBC count depends on age and sex: Women: 4.2–5.4 million cells/mcL. Men: 4.7–6.1 million cells/mcL.

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7. www.verywellhealth.com › hematocrit-level-test-1942505Hematocrit (HCT) Blood Test: High vs. Low Levels

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   4 days ago · A hematocrit (HCT) test, also known as the packed-cell volume (PCT), measures how much of your blood consists of red blood cells. Red blood cells carry oxygen from your lungs throughout your body. A low HCT could be due to anemia , a vitamin or mineral deficiency, or blood loss.

8. www.verywellhealth.com › red-blood-cell-rbc-countRed Blood Cell (RBC) Test: Normal Ranges and Symptoms

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   May 11, 2024 · Summary. A red blood cell count is used to measure the number of oxygen-carrying red blood cells in your body. When you have a high blood count or a low blood count, it's a sign that you may be sick. There are several types of RBC disorders, though, and a range of causes that lead to symptoms.