Answer to Question 1
Benign tumors grow slowly and are encapsulated. Their cells resemble the normal cells from which they arose. They grow by expansion and cause pressure on surrounding tissue. They remain localized and do not recur when surgically removed, tissue destruction is minimal, there is no cachexia, and they usually are not life threatening.
Malignant tumors grow rapidly and are not encapsulated. Their cells undergo permanent change, abnormal rapid proliferation, invasive growth and metastasis, and they spread via the bloodstream. They may recur when surgically removed if invasive growth has occurred and tissue destruction is extensive. If invasive growth has occurred, cancer cachexia can be a threat to life unless detected early and properly treated.
Answer to Question 2
The two causes of stroke are bleeding or blood clots. Both causes affect the brain in the same way; they prevent oxygen from reaching brain tissue and cause death of the affected brain tissue.
Color enhanced X ray of large malignant tumor in the right lung.
EEG recordings showing the differences between normal, absence seizure, and generalized tonic–clonic
Laboratory mice demonstrate that genetic differences can have profound effects on the propensity to
Ethnic Differences in Financial Support for College Based on a sample of 304 emerging adults aged 2
Under ideal conditions, a single cell of the bacterium E. coli would divide every 20 minutes to ...
In the retina, there are two types of light receptor cells: Rods are sensitive to differences in lig