HLTH101 Lecture Notes - Lecture 8: Cystic Fibrosis, Klinefelter Syndrome, Cervical Cancer
1 Aug 2016
School
Department
Course
Professor
Document Summary
Cell cycle is controlled by checkpoints to ensure. Proper replication of dna many dna repair mechanisms. Each daughter cell receives proper # of chromosomes. If dna errors cannot be repaired programmed cell death (apoptosis, figure next slide) Apoptosis basically = voluntary suicide (not necessarily voluntary but is best for cell in that situation) A damaged cell may undergo apoptosis if it is unable to repair genetic errors. Result when cells accumulate genetic errors (approx. Normal cellular proliferation requires a balance between the activity of genes that promote growth and those that suppress it. Malignant keeps growing out of control and has the ability to go into blood stream/other parts of the body to make more and more = cancerous. Most cancer cells don"t have the proper number of chromosomes. Liver - has the ability to regenerate parts of itself when necessary (only parts that need to be though) Lining of digestive tract as well replacing cells as they go (die)
