Connective Tissue Flashcards
connective tissue main purposes (4)
binding/Structural support- protection- Transport- Insulation
Loose (areolar)
Most abundant, semi solid matrix of collagen and elastin fibres containing fibroblasts, adipocytes, mast cells and macrophages; connects and supports other tissues e.g. under skin, between muscles.
Adipose
an areolar tissue matrix contains lost of adipocytes, adopcytes contain large fat globulars.
Two types of fat (adipose tissue)
There are two types
White (fat)> 20-25% BMI in healthy adult, acts as insulator and energy store
Brown> found in new-born, highly vascularised- temp regulation
Reticular
found in lymph nodes and lymphatic organs, matrix captains reticule fibbers, cells present are reticular cells and white blood cells
Dense connective tissue
Low cell number but high fibre, can be fibre or elastic tissue
Two types of dense connective tissue
Fibrose and Elastic.
Fibrous tissue ;
- collagen fibres tightly packed.
- fibroblasts sit between cells.
E.g. tendons, ligaments, periosteum Elastic tissue; -elastin secreted by fibroblast cells
- fibroblasts sit between cells. -tissue has high degree of recoil
-found in organs where shape change is common e.g. blood vessels, lungs
Cartalage
Chondrocytes (cartilage cells)in a collagen and proteoglycan Matrix.
Three types of Cartilage tissue
HYALINE> ends of long bones, FIBROCARTILAGE> intervertrable discs, ELASTIC FIBROCARTALAGE- outer ear
Bone
Osteocytes(Bone Cells) embedded in a mineralised collagen matrix
Cell types ion bone tissues
Osteoblasts- letdown new bone matrix
>Osteoclasts- remove bone matrix
>Osteocytes -mature bone cells that reside in the matrix
Types of bone itself? (2)
Compact Bone vs Spongy Bone