Transcript Cancer - hrsbstaff.ednet.ns.ca

Cancer
Mitosis Gone Wild
What is it??

Uncontrolled, unregulated
growth of cells

Cell division happens much
more rapidly

Cancer cells often look much different then
regular cells
Tumours and Cancer
Tumours can be either benign (non-cancerous)
or malignant (cancerous).
 Benign tumour cells stay in one place in the
body and are not usually life-threatening.
 Malignant tumour cells are able to invade nearby
tissues and spread to other parts of the body.
 Cancer cells that spread to other parts of the
body are called metastases.

Normal cells versus Cancer cells

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Usually only divide to
replace damaged cells
Cell to cell
communication
Cannot divide in
isolation
Adhere to one
another
Can differentiate

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Uncontrolled cell
division
Do not need to
communicate with
each other
Can divide in isolation
Can metastasize
(through circulatory
and lymphatic)
Can not differentiate
Cancer in Young Adults

Approximately 10 000 cancers are diagnosed in
young adults each year

Cancer is the main cause of early death among
young adult women

More young women then young men are now
diagnose with, and die from, lung cancer

Testicular cancer is the most common cancer in
young men
Causes of Cancer

Causes are still not really understood

Carcinogens are chemicals that cause cancer by causing
mutations

Lifestyle habits (diet, tanning, tobacco, alcohol,
radiation, occupational hazards)

Environmental triggers

Family history
Journal Assignment
Due on Thursday
 Marked out of 20 points
 3 Parts to include in your journal

– Fully explain the connections between mitosis and
cancer. (5 pts)
– Why is it important to learn about cancer? (5 pts)
– How has affected you in your life? (5 pts)
– Also include vocab words: metastasize, benign, and
malignant somewhere in your entry (5 pts)