objective 10 Flashcards
a term used to describe the total number of people who are living with a
diagnosis of cancer
prevalence
what are the risk factors of cancer?
- Many well-known and common cancer risk factors are preventable.
- In addition to tobacco use, known risk factors include excessive body weight,
lack of physical activity, unhealthy eating habits, alcohol consumption, and
excessive exposure to the sun. - Several of these factors are related to other chronic diseases, such as
diabetes, kidney failure, chronic obstructive lung disease, and cardiovascular
disease
what are healthy cells?
- Blood cells
- Muscle (smooth,
striated, cardiac) cells - Nerve cells
- Bone cells
- Cartilage cells
- Liver cells
- Have specialized function
depending on their location
(differentiated). - Cells grow, replicate, and repair
tissues and organs. - Your immune system and your
genetic material (DNA/RNA)
regulate these processes. - Healthy cells are programmed
“what to do and when to do it.”
healthy cells
- Mutated cells
- Cannot regulate their
replication and pass on the
genetic mutations. - Bear little resemblance to the
normal cells of tissue from
which they arose. - Don’t do their “original job.”
- Cell membranes contain
tumor-specific antigens which
develop overtime as cell
become less differentiated. - Have invasive characteristics to
infiltrate other tissues
cancer cells
The process of cells developing into
mature healthy cells with explicit characteristics and
capabilities to do a certain function. Fetal cells are less
differentiated but become more differentiated as the
cells mature. When a cell develops mutations, it
becomes less “differentiated,” meaning it looks less
and doesn’t function like the cell it once was or was
meant to be
differentitation
process of infiltrating tissue, spreading
from the original development site.
metastasis
growth of new capillaries from the host
tissue to “nourish” the cancer cells
angiogenesis
transformation of a healthy cell into a
cancer cell
carcinogenesis
Abnormal, unrelated cell proliferation
that competes with healthy cells/tissue
for oxygen, nutrients, and space.
Abnormal cell replicate faster than
normal cells, passing on their defective
DNA that do not have regulatory
mechanisms to prevent overgrowth.
cancer
new growths of abnormal tissue
neoplasms
- Noninvasive, does not spread
- Remains localized
- Noncancerous
- May cause minor tissue damage
- Not injurious unless its location causes pressure or obstruction to vital
organs
benign
- Invasive
- Spreads or metastasizes
- When removed, recurrence is more common
- Death if uncontrolled
malignant
what are the 4 classifications of tumors?
carcinomas
leukemias
lymphomas
sarcomas
- Cancer that originates from epithelial tissue
carcinomas
glandular epithelium
adenocarcinoma
Cancer that originates from organs that from blood
leukemias
Cancers that originate from organs that fight infection (lymphoid tissue
lymphomas
Cancers that originate from connective tissue such as muscle and bone
sarcomas
what are carcinogens>
physical agents
chemical agents
diet
viruses
bacteria
genetics
hormones
medical interventions