Lecture 24 - Mechanobiology II Flashcards
1
Q
Define Force
A
Measured in Newtons
2
Q
Define Stress
A
Force applied over a certain area
mEASURE IN n/m2
(newton over square mete)
3
Q
Define Shear
A
Stress that acts parallel to area
4
Q
Define Compression
A
Pushing force (N)
5
Q
Define Tension
A
Pulling force (N)
6
Q
Define Stiffness
A
Stress over strain E, N/m2 is measured in Pascals
7
Q
What happens when you increase stress?
A
Increase the stress (force over area) strain is also increased
8
Q
Define strain
A
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
