Stress W6

Which of these is not a function of the skeletal system?

• Protects internal organs

• Anchor point for muscles and tendons to facilitate movement

• Reservoir for red blood cells

• Force Transmission

What is a key difference between Cortical and Trabecular bone?

• Increased porosity in cortical bone

• Cortical bone has weight saving properties

• High stress carrying ability of trabecular bone

• Higher degree of vascularisation in trabecular bone

Suppose Lucy sat around all of the summer break, her bones would…

• Lay new bone and increase in mass

• Remain the same (no osteogenic activity will occur)

• Resorb bone and reduce in mass

• Fuse together

"the ability of an object to return to its original shape if forces are removed" This property is known as _

Type the units for stress ("___/___") with the /

Jack is observing part of his femur. The shaft and flared portions of the bone are known respectively as...

• epiphysis and metaphysis

• Diaphysis and metaphysis

•  both just cortical bone

• metaphysis and body

Josh wants of measure his bones ability to deform elastically. What equation should he use?

• Stress = F/A

• Young's Modulus = stress/strain

• Poisson's Ratio = (strain x)/(strain y)

• Strain = delta L/L

Which region is plastic and which is elastic

• Plastic = 1

  Elastic = 2

• Plastic = 2

  Elastic = 3

• Plastic = 2

  Elastic = 1

• Plastic = 3

  Elastic = 2