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Chapter 9 Cancer
Dr. Reed portion of test 3
42
Pharmacology
Professional
11/09/2010

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Term
Another name for tumor is
Definition
neoplasm
Term
which tumor is well differentiated?
Definition
benign
Term
which tumor if not encapsulated?
Definition
malignant tumor
Term
name some benign tumors
Definition
lipoma, glioma, leiomyoma, chondroma
Term
mailgnant epithelial tumors are reffered to as
Definition
carcinomas
Term
an example of a malignant epithelial tumor is
Definition
adenocarcinoma
Term
malignant connective tissue tumors are referred to as
Definition
sarcomas
Term
an example of a malignant connective tissue tumor is
Definition
rhabdomyosarcoma
Term
cancers of lymphatic tissues are
Definition
lymphomas
Term
cancers of blood-forming cells are
Definition
leukemias
Term
Preinvasive epithelial malignant tumors of glandular or epithelial origin that have not broken through the basement membrane or invaded the surrounding stroma are
Definition
circinoma in situ
Term
what are 2 types of cell differentiation?
Definition
anaplasia and autonomy
Term
a cancer cell's independence from normal cellular controls is a
Definition
autonomy
Term
when a cell varies in size and shape then it is
Definition
anaplasia
Term
some stem cells are pluripotent. what is pluripotent?
Definition
the ability to differentiate into multiple different cell types
Term
biological markers that are substances produced by cancer cells or that are found on plams cell membranes, in the blood, CSF or urine are
Definition
tumor cell markers
Term
name a few tumor cell markers
Definition
hormones, enzymes, genes, antigens, antibodies
Term
cancer is predominantly a disease of
Definition
aging
Term
growth of new vessels are
Definition
angiogenesis
Term
advanced cancer cells can secrete
Definition
angiogenesis factors (VEGF)
Term
what is a VEGF?
Definition
Vascular endothelial growth factor
Term
angiogenesis factors are rquired in small cancers to premit?
Definition
tumor expansion
Term
what are protective caps on each chromosome and are held in place by telomerase?
Definition
telomeres
Term
mutant genes that in their nonmutant state direct protein synthesis and cellular growth
Definition
oncogenes
Term
also referred to as anti-oncogenes
Definition
tumor-suppressor genes
Term
encode proteins that in their normal state negatively regulae proliferation
Definition
tumor-suppresspr genes
Term
changes in one or a few nucleoide base pairs are called
Definition
point mutations
Term
when a piece on one chromosome is transferred to another is
Definition
chromosome translocation
Term
duplication of a small piece of chromosome over and over thta results in an increased expreesion of an oncogene is
Definition
chromosome amplification
Term
what does mutation of tumor-suppressor genes allows?
Definition
unregulated cellular growth
Term
when both chromosome copies of a gene are inactivated this is due to
Definition
loss of heterozygosity
Term
when whole regions of chromosomes are shut off while the same regions in other cells remain active this is?
Definition
gene silencing
Term
what are caretaker genes?
Definition
encode for proteins that are involved in repairing damaged DNA
Term
  • increased in malignant cells,
  • results in chromosomes loss, loss of heterozygosity, and chromosome amplifaction

are examples of

Definition
chromosome instability
Term
if the mutation occurs in somatic cells, it is NOT passed to
Definition
progeny
Term
direct invasion of contagious organs is also known as?
Definition
local spread
Term
how do metastases occur to distant organs?
Definition
through lymphatics and blood
Term
what are the phases of tumor spread?
Definition
  • transformation
  • growth
  • local invasion
  • distant metastasis
Term
the spread of cancer from a primary site of origin to a distant site is?
Definition
metastasis
Term
what are the steps of metastasis?
Definition
  • direct or continuous extension
  • penetration into lymphatics, blood vessels, or body cavities
  • transport into lymph or blood
  • transport to secondary sites
  • entry and growth in secondary sites
Term
where does metastasis occurs usually?
Definition
the first capillary bed
Term
preferential growth of cancerous cells in certain organs is
Definition
organ tropism
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