Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
10 Cards in this Set
- Front
- Back
|
Tissue repair is the restoration of damaged tissue with:
|
Tissue renewal/Regeneration - replaces lost cells with same type cells; function maintained.
Fibrosis/scarring - damaged tissue replaced with connective scar tissue consisting of collagen, function often lost |
|
|
Parenchymal tissue
|
Functioning cells of an organ
|
|
|
What is stromal tissue?
|
supporting connective tissues
extracellular matrix Blood vessels nerves |
|
|
How does tissue repair occur?
|
Cellular proliferation by mitotic production of new cells; daughter cells are same as original cells
|
|
|
What controls cell proliferation?
|
Cellular proliferation is controlled by mitotic factors called growth factors that bind to surface receptors and initiate mitosis
|
|
|
What are the 4 major phases of the cell cycle?
|
G1 - cell components begin to prepare for division
S (synthesis) - DNA replication G2 - organelles double, cytoplasmic components and cytoskeleton increases, prepare for division M - cellular division, prophase, metaphase, anaphase, telophase and cytokinesis G0 - cell permanently exits cell cycle |
|
|
Name the three division of body tissues.
|
Continuously doubling (epithelial)
Stable (skeletal, skeletal muscle) Permanent (central nervous system, neurons) |
|
|
Name three properties of stem cells.
|
1. Self-renewal - keep dividing
2. Asymmetric replication - always one daughter cell kept, other cell matures 3. Differential potential (potency) - one cell differentiates to different levels |
|
|
What are the different potencies of stem cells?
|
Totipotent - can make all tissue types
Pluripotent - can make cells from a germ layer Multipotent - can make a family of cells, differentiated to a specific line Unipotent - one cell type, specific to one organ |
|
|
What are the properties of embryonic stem cells?
|
From early stage embryo
Pluripotent cells from inner mass of blastocyst Can generate multiple cell lines |
