Cancer

• a tumour is an abnormal mass of cells
• a group of cells undergo uncontrolled growth and division to for abnormal mass of cells
• what are the two types of tumours?

  benign + malignant
• benign are not considered cancer
• malignant are considered cancerous
• benign is an abnormal mass of cells found only in the membrane and dont move
• malignant tumours don't stay in one place
• malignant tumors invade other tissues
• malignant tumours spread to different parts of the body forming secondary tumours
• secondry and malignant tumours cause alot of damage to the body
• malignant tumours are fatal
• malignant tumors cause further damage to tissues by becoming a secondry tumour
• what are the 4 risk factors of cancer?


  smoking / obesity / uv radiation / genes
• what is the gene that can cause cancer?

  BRCA
• tumour cells divide by mitosis
• malignant tumours sprea to other parts of the body forming secondry tumours
• smoking is a rick factor for lung mouth stomach and cervical cancer
• what 4 cancers does smoking cause?

  lung / mouth / stomach / cervical
• ultra violet radiation is a rick factor of skin cancer
• what 2 factors cause liver cancer?

  obesity and alcohol
• BRCA causes ovarian and breast cancer
• BRCA is a cancerous gene
• what are 2 characteristics of malignant tumours?

  spread around the body in the blood + can lead to secondary tumours
• genetic lifestyle and environmental factors can cause cancer