Connective Tissue Flashcards
what types of cells to connective tissue contain
fibroblasts - produce fibres
adipocytes - fat cell
macrophage - immune system
extracellular material connective tissue contains
3 fibres - collagen, reticular, elastic
collagen fibre
strong and rope like adding strength
reticular fibre
smaller and narrower fibre but branched used for keeping organs in correct 3D structure
elastic fibre
thinner, stretchier allowing changing shape
what is ground substance
cells which produce fibres sit in ground substance eg fluid (blood), gel (cartilage) or mineral (bone)
what did connective tissue develop from
differentiated from mesenchymal stem cells
loose adipose connective tissue
contains fat cells for padding and insulation deep in the skin eg breasts
loose reticular connective tissue
made with many reticular fibres supporting 3D framework eg liver, kidney and bones
dense regular connective tissue
many collagen fibres align parallel in tendons and ligaments to provide firm attachment and stabilise forces
dense irregular connective tissue
collagen fibre line in different directions and may form sheets (capsule) to resist forces applied in different directions and prevent over expansion eg bladder
dense elastic connective tissue
allow expansion and contraction to produce movement eg between vertebrae to stabilise and cushion shock
hyaline cartilage connective tissue description
jelly matrix reinforced by collagen fibres with lacuna of chondrocytes located on bone surfaces and between ribs and sternum
hyaline cartilage connective tissue function
producing stiff but flexible support and reduce friction
elastic cartilage connective tissue description
similar to hyaline but contains elastic tissue not collagen eg ear
elastic cartilage connective tissue function
provides support but tolerates distortion without damage
fibrocartilage connective tissue
contains even more collagen fibres so more robust and pads knee joint to resist compression and prevent bone on bone contact
what are chondrocytes
cartilage cells
what are osteocytes
bone cells
bone connective tissue
osteocytes in matrix with collagen make it the toughest tissue
types of tissue membranes
mucus
serous
cutaneous
synovial
mucus tissue membrane
coated with mucus glands and epithelial cells to produce mucus to line passageways
serous tissue membrane
line ventral body cavities due to. a fluid on top of epithelial cells to produce smooth slippery surface for heart to pump with little friction
cutaneous tissue membrane
skin as has several layers of stratified epithelial cells to protection
