Connective tissue types
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| 9246510923 | Areolar Connective Tissue (Loose) | Gel like matrix with all three fiber types; cells: fibroblasts, macrophages, mast cells, & some white blood cells. Function: Wraps & cushions organs; its macrophages phagocytize bacteria; plays important role in inflammation. Location: directly underneath epithelial tissue, part of membranes, packages organs, and surrounds capillaries. |  | 0 |
| 9246510924 | Adipose Tissue (loose) | Very little matrix; closely packed adipocytes, have nucleus pushed to the side by large fat droplets. Function: Energy storage, insulates against heat loss and supports and protects organs. Location: subcutaneous fat layer, around kidneys, pads of fat around the eyes, within abdomen, and in breasts. |  | 1 |
| 9246510925 | Reticular Connective Tissue | Loose network of reticular fibers in a gel-like ground substance; reticular cells lie on the network. Function: fibers form a loose framework (stroma) that support other cell types including white blood cells, mast cells, & macrophages. Location: lymph nodes, bone marrow and spleen. |  | 2 |
| 9246510926 | Dense Regular Connective Tissue | Primarily parallel collagen fibers; a few elastic fibers; major cell type is fibroblasts. Poorly vascularized. Function: attaches muscles to bones; attaches bones to bones; withstands great tensile stress when pulling force is applied in one direction. Location: tendons ( muscle & bone), ligaments (bone & bone). |  | 3 |
| 9246510927 | Dense Irregular Connective Tissue | Primarily irregularly arranged collagen fibers; some elastic fibers; fibroblast is the major cell type. Function: able to withstand tension from many directions; provides structural strength. Location: dermis of the skin, joint capsules, submucosa of digestive tract. |  | 4 |
| 9246510928 | Cartilage | One of four types of connective tissue- avascular and not innervated. | 5 | |
| 9246510929 | Hyaline Cartilage | Firm matrix consisting of collagen fibers; Chondroblasts produce the matrix & when mature chondrocytes lie in lacunae. Function: firm, pliable, support, resists compressive stress. Location: Tip of the nose, rib cage, embryonic skeleton, Ends of long bones. |  | 6 |
| 9246510930 | Elastic Cartilage | Similar to hyaline cartilage, but more elastic fibers in matrix. Function: maintains the shape of a structure while allowing great flexibility. Location: supports the external ear (pinna), epiglottis (flap in throat) |  | 7 |
| 9246510931 | Fibrocartilage | Blend of hyaline cartilage and dense connective tissue; collagen fibers predominate; rows of chondrocytes. Functions: provides support in areas of heavy pressure. Location: places subjected to a lot of pushing- intervertebral discs; pubic symphysis; discs of knee joint |  | 8 |
| 9246510932 | Osseous Tissue | Bone; well vascularized; Matrix is superhard containing collagen fibers (organic) & calcium salts (inorganic). Cells: Osteoblasts- make collagen fibers. Osteocytes-reside in lacunae Osteoclasts-large, break down bone material. Function: supports and protects; stores minerals. |  | 9 |
| 9246510933 | Spongy Bone | Made of trabeculae ( thin plates of bone) Location: in enlarged ends of long bones and other internal areas. | 10 | |
| 9246510934 | Compact Bone | Looks smooth & dense Location: exterior surface of long bones; shaft of long bones. | 11 | |
| 9246510935 | Osteon (Haversian system) | The structural unit of compact bone; Long cylinder of bone matrix, runs the shaft of the bone. Consists of a series of concentric tubes. | 12 | |
| 9246510936 | Lamella | layers of matrix; looks like a ring when looking at it; 3 layers. | 13 | |
| 9246510937 | Central Canal | Carries blood vessels and nerves to the osteon. | 14 | |
| 9246510938 | Perforating Canals | Lie right angles to central canal | 15 | |
| 9246510939 | Canaliculi | Crack like canals; Connect lacunae to each other and to the central canal. | 16 | |
| 9246510940 | Blood | Red and white blood cells in a fluid matrix (plasma) The fibers are dissolved until you cut yourself. Function: transport respiratory gases, nutrients, waste, and other substances. | 17 | |
| 9246510941 | Osteon model, superior view |  | 18 | |
| 9246510942 | Osteon model, lateral view |  | 19 |
