Studied by 6 people
Cilia and Flagella
whiplike projections of cells
Cilia
short and move in a stiff back and forth motion, placed around cell
Flagella
longer and move in an undulating snakelike fashion, a tail of a cell
Villi
finger-like projection that arises from epithelium of some organs to increase cell surface area
Microvilli
small projections that arise from cells surface to increase cell surface area
Cell wall
extracellular structure of plant cells that provide support to the cell
Primary Wall
provides the strength and flexibility to the cell
Middle Lamella
glues adjacent cells together
Secondary Wall
provides additional strength and protection to the cell
Extracellular Matrix
Only seen in animals, has collagen, proteoglycan, fibronectin, and integrins
Collagen
forms strong fibers outside the cells
Proteoglycan
protein core with carbohydrate chains
Fibronectin
attaches ECM to integrins
Integrins
bind to the ECM on the outside and to attached proteins attached to microfilaments on inside
Plasmodesmata
cell junctions in plants that allow substances to move between plants
Desmosomes
Cell junctions in animals that connect adjacent cell membranes in one spot and connects cells to extracellular matrix
Tight Junctions
Cell junctions in animals that close spaces between animal cells by fusing cell membranes
Gap Junctions
forms channels between animal cells, allowing exchange of substances
