Cancer+Nawtes+-+PK

Cancer Statistics

Cancer Biology

Intro..... -- Cancer is when a group of misbehaving cells cause problems in the body - Contact Inhibition: cells do not have it, they do not dividing which makes a tumor - the nucleus (the brain of cell), contains the chromosomes (DNA)- we have 46 - cancer causes the DNA to not function correctly because it is damaged - the change is called a mutations = caused by external causes (sun, tobacco), or internal ( hereditary) proto-oncogener: information to trigger cell division oncogener: mutation in proto-oncogene - *like a car, with no foot pressing the pedal but still driving*

tumor suppressors- brakes for the oncogener - the tumors can send out signals to "feed me" and blood vessels will grow into the tumors - once the tumor has blood vessels - it spreads to another part of body - called metastasis apoptosis: when the cell cannot heal its gene, it kills itself but damaged so it keeps on multiplying

Bodies, Organs and Cell Tissue - Tissue: muscle, nervous, epithilial, conective - Organ: combo of tissues, stomach,