Weeks 1 & 2 Flashcards

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1
Q

Carcinogen

A

cancer-causing agent, frequently chemical

Any substance or agent that can cause or promote cancer by damaging DNA or causing uncontrolled cell growth. Carcinogens can be chemical, physical, or biological, and their effects depend on the exposure and individual susceptibility.

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2
Q

Carcinoma

A

Cancer that forms in epithelial tissue (including epidermis)

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3
Q

Rebel cell

A

A cell that behaves abnormally, often resisting the normal controls of growth and division.
(rogue cells)

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4
Q

Anthropomorphism

A

The attribution of human traits, emotions, or intentions to non-human entities.

  • Cancer cells do not think, do not plan, do not
    intentionally evolve
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5
Q

Cancer in latin

A

“crab”
- disease
- constellation (asterism)
- zodiac sign (pseudoscience)

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6
Q

karkinos in greek

A

crab

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7
Q

A crab is a metaphor for cancer the disease.

A

Blood vessels supplying tumours
look like many legs of a crab attached to the body.
Tumours are hard like the body of a crab.
The pain of a growing tumour is like the pinch of a crab.

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8
Q

Cancer as a metaphor

A

used for unrelated harms

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9
Q

Oncogene

A

A mutated gene that has the potential to cause cancer.

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10
Q

Carcinogenesis / oncogenesis

A

The formation of a cancer, whereby normal cells are transformed into cancer cells.

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11
Q

Tumour

A

An abnormal mass of tissue that forms when cells grow and divide more than they should or do not die when they should.

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12
Q

benign

A

non-cancerous

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13
Q

malignant

A

cancerous

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14
Q

~90% of cancers start…

A

in the epithelia (carcinomas)

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15
Q

Some names for atypical masses on the body

A

Mole, Cyst, “Skin Tag”, Pimple, Callus, Wart, Mass, Lump

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16
Q

epithelium

A

tissue made of a layer/ layers of cells covering bodily surfaces

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17
Q

tumour vs neoplasm

A

tumour : A lump, growth, localized swelling, mass while…
neoplasm : a new growth

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18
Q

oncology

A

branch of medicine that focuses on the diagnosis, treatment, and study of cancer.

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19
Q

Glyphosate

A

a typical carbon, oxygen and hydrogen-containing
organic molecule

active ingredient in Roundup herbicide

(is it a carcinogen? No clear answer)

Suspected to cause Mosaic Loss of Chromosome Y
among Male Farmers in the Agricultural Health Study.

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20
Q

aneuploidy

A

The occurrence of one or more extra or missing chromosomes in a cell or organism.

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21
Q

study on glyphosate use in farming

A

Males most exposed to glyphosate most likely to have lost Y chromosome from some of their cells

22
Q

hypertrophy

A

Cell sizes increase locally

23
Q

hyperplasia

A

Cell numbers increase locally

24
Q

Dysplasia

A

the cells are displaced
and disorganized; normal cell
organization not visible

25
Q

Somatic cells divide…

A

by mitosis

(they are the cells of the soma (body))

26
Q

Germ cells

A

some divide by mitosis others divide by meiosis to
produce gametes (eggs or sperm cells)

27
Q

“sporadic cancers”

A

Somatic cell gene mutations affect the organism in its lifetime - Some mutations enable cancer development.

28
Q

Germ cell gene mutations transmitted to offspring…

A

may increase risk of cancer in offspring

29
Q

Familial cancers

A

make up 5-10% of cancers

are where an inherited mutant
gene enables cancer to develop

30
Q

A neoplasm is a growth resulting from

A

hyperplasia

31
Q

gene mutation

A

change in a gene or its regulation

32
Q

Gene mutations change…

A

cell structure and/or functions

33
Q

Neoplasm to cancer :

A

cells of a benign tumor accumulate gene mutations over time to become a malignant tumor

34
Q

all species genetic and
physical diversity depends on

A

gene mutations - they enable

35
Q

polygenic

A

result of multiple interacting genes and factors

36
Q

cancer resistance and susceptibility

A

hundreds of genes contribute to it

is also influenced by environment - habits, health &
harms such as pollution

37
Q

certain mutant genes can greatly increase risk of cancer… give an example

A

albinism (lack of skin pigment)
greatly increases risk of skin cancer
beyond normal range

38
Q

Whole chromosomes can be…

A

mutated, affecting many genes

39
Q

review: sexual reproduction transmits parent’s…

A

genomes to offspring

40
Q

Translocations

A

chromosomes composed of parts of two different chromosomes

41
Q

deletions

A

Structural changes – missing pieces in chromosomes

42
Q

Cancer development a gradual process of…

A

genetic mutation and phenotypic transformation

43
Q

key features of cancer development

A

T A I M
(tumour, angiogenesis, invasion, metastasis)

44
Q

angiogenesis

A

formation of new blood vessels

blood supply forms, needed to grow

45
Q

invasion in cancer development

A

some cells move into adjoining tissue

46
Q

metastasis

A

some cells move to distant parts of body

47
Q

pressure or friction can cause

A

hyperplasia calluses

48
Q

tumourigenic

A

tumour forming

49
Q

psoriasis

A

autoimmune disease
stays localised
lots of treatment options

50
Q

Galway def. of cancer

A

a collection of malignant tumour cells

51
Q

3 Hs in enviro. risks

A

habits, health and harms

52
Q

karyotype

A

an individual’s complete set of chromosomes