Tissues
Groups of cells of common origin, and carry out specific functions
4 types of tissue: Epithelial, connective, muscle, and nervous
Cellular connections
Methods that just hold cells together
3 types: desmosomes, gap junctions, tight junctions
Desmosomes
Sticky carbohydrate protein discs, joined by protein filaments between holding cells together
Gap junctions
Hollow protein channels, joins things together while allowing substances to go back and for the between what they join
Tight junctions
Pulls/holds cells together, creates a permeability barrier between the cells, prevents water and ion exchange between cells
Internal caulk