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BIOL 102 Midterm: BIO 102 - Notes for Exam 1 e

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BIOL 102
Terry Spohn

Connective Tissues - Mostly matrix—separated from each other; cells embedded in nonliving extracellular matrix (gel-like ground substance; gives CT strength and characteristics) - General functions: o Support softer organs of body o Connect parts of body o Store fat o Produce blood cells (made in red bone marrow) - Two general types: o Fibrous ▪ Function: provides strength and elasticity ▪ Contains fibers and cells embedded in matrix • Cells: fibroblasts, macrophages, lymphocytes, and neutrophils • Fibers: collagen, elastic, and reticular ▪ Four General Types: • Loose: surrounds many organs, lines cavities, around blood vessels • Dense: forms tendons, ligaments, deeper layers of skin • Elastic: surrounds stomach and bladder; maintains shape • Reticular: makes up internal framework of soft organs (liver) and lymphatic system o Special ▪ Cartilage: produced by chondroblasts found in lacunae (depressions in tissue); no blood vessels; high collagen content ▪ Bone: inorganic matrix with calcium salts for hardness ▪ Blood: fluid matrix of plasma, RBCs and WBCs, and platelets ▪ Adipose Tissue: fat cells; function in insulation, protection, and energy storage Muscle Tissues - Skeletal: moves body parts; voluntary, multinucleated (cylindrical—striated) - Cardiac: functions in the heart; involuntary (auto-rhythmic); single nucleus (branch:
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