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Most abundant; binds, supports, & strengthens tissues; protects, insulates, & compartmentalizes structures; highly vasular (exc. cartilage & tendons); nerve supply (exc. cartilage)
Located between spaced cells of c-tissue; consists of protein fibers & ground substance; secreted by c-tissue
Fluid, semifluid, gelatinous, or calcified; composed of H2O, proteins, & polysaccharides called glycosaminoglycans (GAG)
Example of glycosaminoglycans (GAG)?
Hyaluronic acid - viscous, slippery substance that binds cells, lubricates joints, & maintains shape of eyeballs
Fine bundles of collagen coated w/ glycoprotein formed into branching networks (forms framework (stroma) into soft organs)
Areolar c-tissue (loose)
Consists of collagen, elastic, & reticular fibers & fibrblasts, macrophages, plasma cells, adipocytes, & mast cells; *functions in strength, elasticity, & support
Where is the areolar c-tissue located? (loose)
Located in subcutaneous layer deep to skin, superficial region of dermis, mucus membranes, & around blood vessels, nerves, & body organs
Adipose c-tissue (loose)
Consists of adipocytes where triglycerides are centrally located, & nucleus & cytoplasm are peripherally located; *functions in reduces heat loss, energy reserve, support, & protection
Where is the adipose c-tissue located? (loose)
Located in subcutaneous layer deep to skin, yellow bone marrow, padding around joints & behind eyeballs (eye sockets)
Reticular c-tissue (loose)
Consists of networking of interlacing reticular fibers & cells, *functions: forms stroma, filters & removes blood cells in spleen & microbes in lymph nodes
Where is the reticular c-tissue located? (loose)
Located in the stroma (supportive framework) of liver, spleen, & lymph nodes
Regular dense tissue
Parallel bundles of collagen fibers w/ fibroblast (tendons & ligaments); *function: provides strong attachment
Elastic dense tissue
Branching elastic fibers & fibroblasts for stretching & recoiling (lungs, bronchial tubes, ligaments); *function is to allow stretching of organs
Dense network of collagen fibers & elastic fibers embedded in chondroitin sulfate, strength due to collagen, resilience due to chondroitin sulfate
consists of chondrocytes & collagen fibers; located at ends of long bones, anterior ends of ribs, parts of nose, & fetal skeleton
Strongest type of cartilage, consists of chondrocytes scattered in bundles of collagen fibers
Where are fibrocartilage found?
Found in pubis symphysis, intervertebral discs, menisci of knees, & portions of tendons
Where are elastic cartilage found?
Located on top of the larynx, part of the external ear, & auditory tubes
Bone c-tissue (type)
AKA ossseous tissue, contains osteocytes that are located w/n lacunae in matrix; 2 classifications
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