Chapter 5: Extracellular Structures

Question 1

seal the spaces between cells and provide direct communication between cells

Answer 1

cell junctions

Question 2

supports and protects cells and provides mechanical linkages between tissues

Answer 2

exracellular matrix (ECM)

Question 3

glycoproteins in the plasma membrane that bind to specific molecules on other cells

Answer 3

cell adhesion molecules

Question 4

regions of tight connections between membranes of adjacent cells

Answer 4

tight junctions

Question 5

form buttonlike spots, or belts, that run entirely around cells, “welding” adjacent cells together

Answer 5

anchoring junctions

Question 6

anchoring junctions with intermediate filaments that anchor the junction in underlying cytoplasm

Answer 6

desmosomes

Question 7

microfilaments are the anchoring cytoskeletal component

Answer 7

adherens junctions

Question 8

open direct channels that allow ions and small molecules to pass directly from one cell to another

Answer 8

gap junctions