Shared Flashcard Set

Details

Lecture 2
The Life of a Cell
28
Anatomy
Undergraduate 2
09/11/2010

Additional Anatomy Flashcards

 


 

Cards

Term
number of cells that die every 24 hours
Definition
100 billion
Term
Interphase
Definition
-G1, S, G2
-non dividing stage of cell cycle
-cell is involved in DNA replication and growth
Term
G1
Definition
-normal cellular activities
-cell growth and duplication of organelles
-protein synthesis
Term
S
Definition
-DNA replication
-where mutations occur
Term
G2
Definition
protein synthesis, microtubules, etc.
Term
mitotic phase
Definition
-nuclear division
-cytokinesis-cytoplasmic division
Term
possible fates of daughter cells
Definition
-enter a new cell cycle immediately
-rest as an uncommitted cell
-differentiate (specialize), age or die (sometimes lose ability to divide)
Term
cells which are extremely specialized and have lost their ability to divide
Definition
RBCs, neuron, muscle cell
Term
cells that normally do not divide but can be induced to do so by appropriate stimulus
Definition
liver cells, lymphocytes (WBCs)
Term
cells which continuously undergo cell division
Definition
-skin, cells of intestinal lining, bone marrow cells
Term
chromosome
Definition
dark staining threadlike body in the nucleus containing genetic information
Term
chromatin
Definition
DNA and protein
Term
gene
Definition
-hereditary unit or source of information for synthesis
-segment of DNA on chromosome
Term
karyotype
Definition
number and type of chromosomes an individual has
Term
centriole
Definition
cylindrical structure, composed of microtubules that serves as an organizing center for mitotic spindle
Term
cells vulnerable to DNA damage
Definition
GI tract and bone marrow
Term
cells vulnerable to DNA damage
Definition
GI tract and bone marrow
Term
prophase
Definition
-nuclear membrane disappears
-chromosomes become condensed
Term
metaphase
Definition
-paired chromosomes (or chromatids) line up along equator
Term
anaphase
Definition
-chromosomes separate and migrate to opposite sides of cell
Term
telophase
Definition
-nucleus divides into two units which have the same composition of DNA
Term
result of mitosis
Definition
daughter cells enter phases of the cell cycle and may immediately divide again, "rest" or remain permanently in interphase
Term
results of meiosis
Definition
4 daughter cell which contain 1/2 of DNA or number of chromosomes of parent cell (23 chromosomes)
Term
hypertrophy
Definition
increase in size of cells
Term
hyperplasia
Definition
increase in mitotic activity (number of cells)
Term
atrophy
Definition
decrease in size due to lack of use
Term
metaplasia
Definition
changes in cell in response to disease or chronic irritation which results in the transformation of the cell into different cell type
Term
neoplasm
Definition
-new cell mass
-rapid multiplication
-benign vs. malignant
Supporting users have an ad free experience!