Exam (elaborations)
BIOL325 Week 10 Questions answers latest update
- Course
- BIOL325
- Institution
- University Of Richmond
BIOL325 Week 10 Questions answers latest update
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BIOL325: Week 10Focal adhesions - - interaction between actin filaments; cells and ECM
- linkage molecule: integrins
- associated with actin
- function: tethers cell to basal membrane; cellular movement
hemidesmisomes - - interaction between keratin filaments of epithelial cells to
basal lamina
- linkage molecule: integrins
- associated with intermediate filaments (keratin)
- function: support, strength, orientation
adherens junctions - - interaction between cytoskeletons of adjacent compatible
cells
- linkage molecules: cadherins
- associated with microfilaments
- function: anchoring, linking, transcellular network
desmisomes - - interactions between cells and neighboring cells
- linkage molecule: cadherins attaching to keratin filaments
- no cytoskeletal association
, - function: strength, rigidity
tight junctions - - interaction between neighboring cells
- no linkage molecule
- no cytoskeletal association
- function: seal neighboring cells together; maintain cellular polarity
gap junctions - - interaction between cytoplasm of two adjoining cells
- linkage molecule: regulated channel proteins/connexins
- no cytoskeletal association
- function: coordinate responses of cells in an organ
plasmodesmata - - interaction between cytoplasm of two adjoining plant cells
- linkage molecule: cell wall
- no cytoskeletal association
- function: gap junctions but for plants
epithelia - multiple sheets in which adjacent cells are joined tightly together,
covering the external surface of the body and line all the internal cavities as a
barrier
apical surface - surface is free/exposed to air and bodily fluid
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