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Circulatory System (functions)
includes: transporting oxygen and nutrients and hormones, transporting carbon dioxide and other metabolic wastes, regulating body pH and temperature, and protecting body from pathogens
is a type of connect tissue, consisting of a liquid extracellular matrix (plasma), and cells and cell fragments (formed elements)
includes: blood plasma (liquid matrix), and formed elements (cells and cell fragments)
a formed element that is defined by the percentage of total blood volume occupied by RBCs
macrophage cells in spleen and liver phagocytize these types of damaged cells; globin and heme groups are spilt apart, globin protein broken down into amino acids; heme group, iron removed and transported to red bone marrow by transport protein (transferrin), and non-iron portion of heme group converted to stercobilin and removed in feces
granular cell: contain small granules, 2- to 5-lobed nucleus, and they phagocytosis of pathogens
granular cell: contain large granules, 2-lobed nucleus, moderate inflammation at injury site, and they phaocytosis of pathogens
graular cell: contain various sized granules, 2-lobed nucleus obscured by granules, and they intensify inflammation at site of injury or infection
agranular cell: contain a round nucleus, they aid in immune respone, and they include B-, T-, and Natural Killer-Cells
agranular cell: contain kidney-shaped nucleus, they migrate to various tissures and become macrophages, and they phagocytosis of pathogens
functions include protecting the body from pathogens, and is composed of plasma and formed elements
includes the formation of formed elements of blood, occurs in red bone marrow in adults, and begins with pluripotent stem cells
is a series of actions that stops bleeding, mechanisms include vascular spasm, platelet plug formation, and blood clotting
is a contraction of smooth muscles in walls of arteries or arterioles in response to a nerve impulse from a pain receptor, or a chemical signal released from a platelet
Platelet Plug Formation
platelets adhere to blood vessel walls and aggregate to form a platalet plug, the platelets are loosely bound together
coagulation. is a series of chemical reactions that produces fibrin threads, and requires activity of several coagulation factors
consist of fibrin threads of blood clot contract, pulling clot together, and pulling damaged edges of blood vessels together
involves dissolving blood clots after tissue damage is repaired, and the digestion of fibrin threads by plasmin (fibrinolysin)
includes cell fragments, cytoplasm enclosed by plasma membrane, and is non-nucleated
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