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Lecture 30

BSCI 10001 Lecture Notes - Lecture 30: Loose Connective Tissue, Hyaline Cartilage, Elastic Cartilage


Department
Biological Sciences
Course Code
BSCI 10001
Professor
Adam Arthur Leff
Lecture
30

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Cells and Tissues
Extracellular Matrix
Two main elements
Ground substance mostly water along with adhesion proteins and
polysaccharide molecules
Fibers
Produced by the cells
Three types
Collagen fibers
Elastic fibers
Reticular fibers
Connective Tissue Types
Bone (osseous tissue)
Composed of:
Bone cells in lacunae (cavities)
Hard matrix of calcium salts
Large numbers of collagen fibers
Used to protect and support the body
Connective Tissue Types
Hyaline cartilage
Most common cartilage
Composed of:
Abundant collagen fibers
Rubbery matrix
Entire fetal skeleton is hyaline cartilage
Connective Tissue Types
Elastic cartilage
Provides elasticity
Example: supports the external ear, epiglottis
Connective Tissue Types
Fibrocartilage
Highly compressible
Example: forms cushion-like discs between vertebrae
Connective Tissue Types
Dense connective tissue
Main matrix element is collagen fibers
Cells are fibroblasts
Examples
Tendon attach muscle to bone
Ligaments attach bone to bone
Connective Tissue Types
Areolar connective tissue
Most widely distributed
connective tissue
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