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;
9 Cards in this Set
- Front
- Back
what happens to neoplasms
|
they proliferate to form new tissues.
apoptosis is not initiated. cell # is not constant signs to regullate/stop cell growth are ignored |
|
when do cells divide
|
when told to do so by growth factors.
they attach to receptor proteins typically on membranes of nearby cells which work by affecting G proteins to turn on intracellular messengers. those make second messengers and act inside the cell to stimlate division |
|
pro-oncogenes
|
normal genes that code for normal proteins used in cell division
|
|
oncogenes
|
mutated pro-oncogenes that promote autonomous cell growth
|
|
what do tumor suppressor proteins do
|
inhibit proliferation of cells in a tumor, p53 specific
|
|
naming tumors:
|
benign-
tissue name + oma malignant- epithelial tissue: tissue name + carcinoma mesenchymal tissue: tissue name + sarcoma |
|
benign tumors contain cells that are..
|
like normal tissue cells
they may perform the normal function of the tissue and have a capsule around them (so do not invade other tissues) |
|
malignant tissues contain cells that..
|
do not look like normal adult cells
the cells divide rapidly and tumors metastasize + travel in the blood or lymph nodes |
|
cancer cell characteristics
|
mutations in proliferative phase
if early= more undifferentiated= malignant if late= more differentiated= benign |