Biology Questions and Answers
The main risk factor for skin cancer is
solar eprotection axposition ogainst ultraviolet radiationf the skin without (^)
(a potential carcinogen).
The most lethal skin cancemelanoma. r is
- How is cancer usually
treated?
If the cancer is in its initial stage
treatmremoval oent is often done by surgicalf the neoplastic tissue.
Cancers already disseminated are often
treated with and anti-mitoticradiation ( drugs (chradiothemotherapy).erapy)
- What are the main
degenerative diseases of the
nervous system?
The main dnervous systemegenerative d are Alzheimer’s diseaseiseases of the (^)
and Parkinson’s disease.
Degenerative diseases of the nervous
system are degradation caused or loss oby progressive tissuef neurons in some
regions of the nervous system.
- What is Alzheimer’s
disease?
Alzheimer’s disease is a degenerative
disease owhich the f the central nervous systempatient has progressive in
dementia and alteration of mental
functions.
The disease generally appears after 40years of age and it is more frequent inthe elderly. Image studies of the brain (^)
show broad loss of brain tissue. (The
Alzheimer’s disease confused with other mentalshould not be
deteriorations common in the elderly.)
- What is Parkinson’s
disease?
Parkinson’s disease is a degenerative
disease othe main f the nervous systemmanifestations are progressive in which (^)
motor disturbances, like tremors of feet,
hands awalking and balance imnd mandibles (jaws) apairments.nd (^)
Parkinsondegeneration ’s disease of dopamineis due to thergic motor (^)
neurons, i.e., motor neurons that use
dopamine as a located in a specific rneurotransmitter,egion of the brain, (^)
the mesencephalon. Such degeneration
creates deficiency onervous system. (Parkinson’s df dopamine in theisease (^)
should not be confused with other
causes omedicines.)f tremors, like the use of some
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