Biolog 38 - Chapter 38: Circulation I. Blood Plasma is the...

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Chapter 38: Circulation I. Blood Plasma is the liquid component of the blood Plasma is about 60 % of a volume of blood; cells and fragments are 40%. Plasma has 90% water and 10% dissolved materials including proteins, glucose Red blood cells, also known as erythrocytes, are flattened, doubly concave cells about 7 µm in diameter that carry oxygen associated in the cell's hemoglobin. Mature erythrocytes: lack a nucleus, are small White blood cells, also known as leukocytes, are larger than erythrocytes, have a nucleus, and lack hemoglobin. They function in the cellular immune response. There are five types of leukocytes, important components of the immune system. 1. Neutrophils enter the tissue fluid by squeezing through capillary walls and engulfing foreign substances. 2. Macrophages release white blood cell growth factors, causing a population increase for white blood cells. 3.
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Biolog 38 - Chapter 38: Circulation I. Blood Plasma is the...

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