Summary/Outline

1.Description

a.structure- 9 sets of 3 fused mictrotubles arranged in open star shape

b.location- just outside of nucleus

c.arrangement- found in sets of 2 at right angles to each other

2.Cell Division

a.poles- attach to, cause to drag apart

b.microtubles/spindles- attach to poles

c.basal bodies- same structure (cilia, flagella)

d.mitosis/meiosis- part in cell division

3. Derived from

a.spirochettes- bacteria with microtubles

4. Found in

a. animal cells- always

b.mosses, algae, fungi- cell must have cilia and flagella (rarely found in plants)

5. Definitions

a. centriole- organelle associated with spindle

b.spindle- microtubular structure

c. basal body- base of cilia and flagella

d. cell division- cell divides into 2 daughter cells