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Connective Tissue. Connective tissue. Made of cells suspended in an extra-cellular matrix Three types of fibers Collagen fibers Strong fibers Elastin fibers Flexible fibers Reticular fibers Create a delicate framework. Types of connective tissue. Areolar (loose) Tissue.
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Connective tissue • Made of cells suspended in an extra-cellular matrix • Three types of fibers • Collagen fibers • Strong fibers • Elastin fibers • Flexible fibers • Reticular fibers • Create a delicate framework
Areolar (loose) Tissue • Few collagen fibers • Cells of this tissue are spread out in the matrix
Lots of reticular fibers • May be hard to see on the slides
Dense Connective Tissue • Abundant collagen fibers • Closely packed • Fine network of elastin fibers
Elastic Connective Tissue • Mainly elastin fibers • Between collagen fibers and fibroblasts • May be hard to see on the slides
Cartilage • Rigid connective tissue • Provides support • Matrix is abundant and made of… • Abundant collage fibers • Gel-like ground substance • Characteristic cells are found in little “pocket-like” structures called lacunae
Hyaline Cartilage • Most common type of cartilage
Elastic Cartilage • More flexible than hyaline • Has more elastin fibers
Fibrocartilage • Very tough tissue • Abundant collagen fibers
Bone (osseous tissue) • Most rigid tissue • Cells also found in lacunae
central (Haversian) canal perforating (Volkmann) canal
Blood • Cells are suspended in a fluid matrix • plasma • Characteristic cells=red blood cells (RBC’s) and white blood cells (WBC’)