Ch 1 Connective Tissues Flashcards
What are the characteristics of connective tissue?
Cells are widely scattered in tissue
Cells produce large amounts of extracellular matrix
Good blood and nerve supply except for cartilage which gets neither
What are the functions of connective tissue?
Protection Supporting framework for body and organs Store energy as fat Defend body from microorganisms Transport fluid and dissolved substances
What are the different types of connective tissue?
Connective, blood, cartilage, bone.
What are collagen fibers?
Fibers made of collagen protein.
One collagen bundle is made of many collagen fibers.
Stiff, flexible, resistant to stress.
Most abundant fiber.
What are the characteristics of reticular fibers?
They interconnect in a branching way.
Make scaffolding tissue.
Provide structure and framework.
Stretchier than collagen.
What are elastic fibers?
Made of elastin.
Provide strength and elasticity to tissues.
What is ground substance made of?
Protoglycans
Glycoproteins
Interstitial fluid
What are protoglycans?
Huge carbohydrates that help make up ground substance.
Attracts and holds water.
What are glycoproteins?
Proteins with carbohydrates attached.
Attracts and holds water.
Helps make up ground substance.
What are the characteristics of areolar connective tissue?
Most widely distributed of connective tissues.
Semifluid extracellular matrix- holds a lot of water.
Has a few fibers, mostly collagen, scattered through tissue.
Flexible, not resistant to stress.
What is a fibroblast?
A fiber making cell.
What is a fibrocyte?
A cell that maintains extracellular matrix.
What is a macrophage?
A large irregularly shaped cell that moves through tissue.
What is the function of a macrophage?
Perform phagocytosis and Pinocytosis on bacteria, foreign particles, and damaged tissues.
Secrete chemicals that signal immune system.
What is the function of a plasmacyte?
Make and release antibodies.
Protection.
Develop from lymphocyte.
