Connective Tissues Flashcards
Give examples of connective tissues
Bone, cartilage, tendons and ligaments, adipose tissue, mesentery, layers under skin and around organs
How is structure related to function?
Diverse structural arrangement depending on location and function of tissue
What features define connective tissues?
Ground substance, fibres and cells
What makes up the extracellular matrix?
Ground substance and fibres
What does the extracellular matrix do?
Provides structural and biochemical support for cells
What is the function of ground substance?
provides biochemical support and supports intercellular exchange of substances
What is ground substance?
Clear, semi-solid gel composed of glycoproteins and complex carbohydrates (hyaluronic acid and glucosamine)
What do fibres do?
Provide structural support and tensile strength
What are the two main types of fibres?
Collagen and elastin
Describe collagen fibres
Strongest and most abundant, provide tensile strength
Describe elastin fibres
Long and branched, provide stretch and recoil ability
Where does collagen come from?
It is secreted into the ECM by connective tissue cells
What is type 1 collagen?
found in fibrous tissues
What is type 2 collagen?
Hyaline cartilage
What is type 3 collagen?
delicate branched ‘reticular’ network found in highly cellular organs
Where does elastin come from?
It is secreted into the ECM by fibroblasts