basic tissue types Flashcards
in a tissue, the ….. fills the spaces between the cells
ECM
4 types of tissue
epithelial tissue
connective tissue
nervous tissue
muscle tissue
epithelia cover
surfaces - skin, stomach, blood vessels
3 cell shapes for epithelium
- simple squamous - endothelial cells
- simple cuboidal - salivary gland duct
- simple columnar - inner surface of small intestine
3 cell arrangements for epithelium
- pseudostratified - all cells attached to underlying basement membrane - respiratory tract
- stratified squamous - only deepest layer attached to basement membrane - skin
- stratified transitional - urinary system
specialisations of epithelia - microvilli
increase SA for reabsorption - supported by actin
- inner surface of small intestine
specialisations of epithelia - cilia
moves substances along, made of microtubules
- respiratory system eg. trachea
specialisations of epithelia - keratinised
outer layer of dead keratinised cells
- skin
specialised cell types in epithelium
goblet cells in ciliated pseudostratified epithelium of trachea - secretes mucous
- epithelial tissue with more than 1 cell type
3 types of connective tissue
- fluid connective tissue (blood, lymph)
- soft connective tissue (fibroblasts, adipose cells)
- hard connective tissue (cartilage, bone)
soft and hard connective tissue seperated by large amounts of extracellular material called
matrix
3 key components of matrix -
1. proteoglycans
protein with many charged carb side chains
hydrated to form a gel
3 key components of matrix -
2. collagen proteins
rope-like, bend but don’t stretch
3 key components of matrix -
3. elastic fibres
stretchable and resilient
nervous tissue made of 2 types of cell
-neurons
-glial cells