Lecture 24 - Mechanobiology II Flashcards

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1
Q

Define Force

A

Measured in Newtons

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2
Q

Define Stress

A

Force applied over a certain area
mEASURE IN n/m2
(newton over square mete)

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3
Q

Define Shear

A

Stress that acts parallel to area

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4
Q

Define Compression

A

Pushing force (N)

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5
Q

Define Tension

A

Pulling force (N)

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6
Q

Define Stiffness

A

Stress over strain E, N/m2 is measured in Pascals

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7
Q

What happens when you increase stress?

A

Increase the stress (force over area) strain is also increased

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8
Q

Define strain

A
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9
Q

What are the 3 different stiffnesses of tissues?

A

Different tissues have different stiffness

Soft (0.1kPa-1kPa) - Brain, embryo, breast
Intermediate (1kPa - 10kPa) - Liver, Kidney, Dermis, Lung
Stiff (10 kpA - 100kPa) - muscle, cartilage, bone

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