cancer Flashcards

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1
Q

what is cancer ?

A

a group of disorders caused by a growth disorder ,usually where cells divide uncontrollably .

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2
Q

what is a tumour ?

A

a mass of abnormal cells that divide uncontrollably

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3
Q

What is neoplasm ?

A

A neoplasm is a type of abnormal and excessive growth of tissue

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4
Q

What is a mutation ?

A

An alteration in the nucleic acid sequence of an organism

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5
Q

What is a benign tumor ?

A

A mass of cells that does not invade neighbouring tissue or metastasise

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6
Q

Cancer is a result of …

A

A mutation in the genes that regulate mitosis

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7
Q

What happens if the genes that regulate mitosis mutate

A

Non functioning proteins are made ,mitosis is not regulated .uncontrollable division of cells and the creation of a tumor .

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8
Q

Give the main features of a benign tumor ?

A

Grow potentially very large but at a slow rate

They are non cancerous because they produce adhesion molecules sticking them together and to a particular tissue

They are often surrounded by a capsule so they remain compact and can be removed in surgery and rarely return

The impact is localised and usually non life threatening depending on the tumor location

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9
Q

Give the features of malignant tumors ?

A

These are cancerous and grow large large rapidly
The nucleus becomes large and the cell can become unspecialised

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