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Cell Reg. and Cancer
Cell division, type, injury, and adaptations
Term | Definition |
---|---|
The phase where cell division/replication occurs | M Phase |
The phase where the cell goes into a resting state | G0 Phase |
What type of cell rapidly replicates? | Labile cells |
What type of cell stays in G0 phase until more of these cells are needed? | Stable cells |
What type of cell enters G0 phase and never leaves? | Permanent cells |
What is an example of labile cells? | Hair and skin cells |
What is an example of stable cells? | Liver cells |
What is an example of permanent cells? | Nerve cells |
Atrophy | Cell reduction ***arm taken out of a cast, appears smaller than other arm*** |
Physiologic Hypertrophy | Cell enlargement WITH accompanying supportive structures ***strength/weight training*** |
Pathologic Hypertrophy | Cell enlargement WITHOUT accompanying supportive structures ***left ventricle enlargement*** |
Hyperplasia | Cells increase in number |
Metaplasia | Replacing one cell type with another ***columnar cells replacing squamous cells*** |
Dysplasia | Abnormal cell growth |
Neoplasia | New, uncontrolled, uncoordinated growth ***can be benign (well differentiated) or malignant (poorly differentiated)*** |
What are the two types of cell death? | 1.) Apoptosis = programmed cell death ***ovarian cells during menopause*** 2.) Necrosis = cell death due to injury ; the cells swell, leak, and disintegrate into cell remnants ; irreversible changes are occurring |
Anaplasia | Cancer cells that divide rapidly and have little or no resemblance to normal cells |