cancer

Question 1

cancer definition

Answer 1

control of cell division is lost, the cells begin dividing uncontrollably and produce abnormal cell masses called tumours

Question 2

malignant tumours

Answer 2

the tumour cells are able to spread to other parts of the body

Question 3

metastasis

Answer 3

the spreading of malignant tumours/tumour cells to form secondary tumours in different parts of the body

Question 4

benign tumours

Answer 4

some tumours aren’t able to invade normal tissues, blood or lymph vessels and dont spread to other parts of body. they can grow and press on surrounding tissues exerting pressure on vital organs, but came spread and are usually easily removed

Question 5

carcinogens

Answer 5

environmental factors triggering tumours - usually occurs only after long exposure to a carcinogen.

Question 6

some examples of carcinogens

Answer 6

UV radiation
X rays
Ionising radiation
viruses - HPV can cause cervical cancer
chemical carcinogens - alcohol, asbestos, soot and tar