Cell cycle
• Damage, dead and warn out cells depending on their type ca
often by replaced by cell division maintaining tissue integrity
function
• The frequency with which cell division occurs varies with diff
types of tissue normally this is carefully regulated to allow
effective maintenance and repair of body tissue
• At the end of their natural life span,aging cells are program t
destruct and their component are removed by phagocytosis
process known as apoptosis
,• Cells with nuclei have 46 chromosomes and divided by mitos
process that result in two new genetically identical daughter
• the only exception to this is the formation of gametes (sex ce
ovum and spermatozoa which take place by meiosis
• the process by which cell divides and produce new cells know
cell cycle
■ This has two phases that can be seen on light
microscopy that are--
■ mitosis and interphase
, Interphase
• This is the longer phase and three separate stages are recog
that are recognize--
• 1) G1 phase
• 2) S phase
• 3) G2 phase
G1(Gap)phase--
• The cell grow in size and volume
• this is usually the longest phase and most variable in
length
• Damage, dead and warn out cells depending on their type ca
often by replaced by cell division maintaining tissue integrity
function
• The frequency with which cell division occurs varies with diff
types of tissue normally this is carefully regulated to allow
effective maintenance and repair of body tissue
• At the end of their natural life span,aging cells are program t
destruct and their component are removed by phagocytosis
process known as apoptosis
,• Cells with nuclei have 46 chromosomes and divided by mitos
process that result in two new genetically identical daughter
• the only exception to this is the formation of gametes (sex ce
ovum and spermatozoa which take place by meiosis
• the process by which cell divides and produce new cells know
cell cycle
■ This has two phases that can be seen on light
microscopy that are--
■ mitosis and interphase
, Interphase
• This is the longer phase and three separate stages are recog
that are recognize--
• 1) G1 phase
• 2) S phase
• 3) G2 phase
G1(Gap)phase--
• The cell grow in size and volume
• this is usually the longest phase and most variable in
length
