Flashcards
Cell Biology : Connective Tissue
Cards in this deck (15)
- 1What are the 3 main components of connective tissue?Fibres, cells and matrix
- 2What are the two type of fibres and how are they different?Collagen and Elastic
collagen : white, thick, unbranched, strength
Elastin : Yellow, thin, branched, stretch - 3What are the properties of Collagen fibres?3 chains of aplha helix
Made of fibroblasts
Rich in Gly and Pro
34 genes involved - 4What are properties of Elastic fibres?Made by fibroblasts
Hydrophobic protein - elastin
Bound to fibrillin
cross linked - 5What stain do you need to see elastic fibres?Weigerts
- 6What are the 3 types of cells in connective tissue?Fibroblasts(active), Fibrocytes(inactive) and Adipocytes(fat cells)
- 7Which cells have a euchromatic nucleus, abundant cytoplasm and lots of RER?Fibroblasts
- 8Which cells have a heterochromatic nucleus(flat), scant cytoplasm and little RER?Fibrocytes
- 9What are some properties of Adipocytes?Lots of SER, pinocytic vesicles, coating of type 3 collagen, good blood supply , receptors for GH insulin and thyroid
- 10What is white fat and is it common?unilocular - one big lipid vesicle and yes it is common
- 11What is brown fat and is it common?Multilocular - many small lipid vesicles.
It has lots of mitochondria and is common in children in shoulders and around hips.
It burns calories producing heat - 12What is the matrix mainly made of?Glycosaminoglycans (GAGs)
- 13Why can't the matrix fold?It is hydrophobic
- 14Why is the matrix turgid?Retains sodium and other ions and draws water into hydration spaces
- 15Give some types of GAGs and where they are foundHyaluronic acid - catilage and synovial fluid
Chondroitin sulfate - cartilage and blood vessels
Heparan sulfate - lung and liver
Keratan sulfate - invertebral discs and catilage
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- Cell Biology Flashcards on Cell Biology : Connective Tissue, created by savaniprachi on 01/06/2014.
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