Cell Biol Chapter 13 outline
Cytoskeleton
A) microtubules
1) structure = hollow cylinders, ~ 24 nm diameter, length varies
2) functions (major)
a) chromosome movement (mitotic spindle)
b) cilia and flagella (eukaryote)
c) movement of vesicles and organelles in cells
3) microtubule assembly and disassembly
4) inhibitors of this process
a) colchicine
b) vincristine
5) microtubule organizing center (MTOC) or centrosome
B) microfilaments
1) structure = 6 nm actin polymers
2) functions
a) microvilli structure
b) cytokinesis
c) cytoplasmic streaming
d) penetration of sperm into egg
e) pseudopodia
C) intermediate filaments