PSYC 412 Lecture Notes - Lecture 10: Contact Inhibition, Metastasis, Bronchus
Document Summary
Cancer: group of diseases caused by the uncontrolled growth and spread of abnormal cells. Normal cells: controlled growth, normal chromosomes, undergo apoptosis, contact inhibition, stay in organ, specialized cells, undergo maturation and senescence, even in appearance, even-shaped nuclei, organized arrangement. Cancer cells: uncontrolled growth, abnormal chromosomes, no apoptosis, no contact inhibition, ability to metastasize, nonspecialized cells, immature/undifferentiated, variable in appearance, variably-shaped nuclei, disorganized arrangement. Ignore the chemical signals that tell cells to stop dividing or that initiate programmed cell death (apoptosis)m. Take control of normal cells, molecules, and blood vessels to feed tumor. As cancer cells grow into tumors, they begin using the immune system to. Hide from the immune system, spread undetected stay alive. 2nd highest cause of death in the us and most developed countries. Some cancers are related to race, ethnicity, and cultural differences. The causes, symptoms, and treatment for each cancer vary. Incidence rate is highest in african american males, followed by white males.
