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Questions and Answers
What is the primary function of osteoclasts in bone remodeling?
What is the primary function of osteoclasts in bone remodeling?
- To break down and resorb bone tissue (correct)
- To regulate vitamin D levels
- To produce calcium supplements
- To build new bone tissue
Approximately how much calcium is destroyed and rebuilt in bones every day?
Approximately how much calcium is destroyed and rebuilt in bones every day?
- 1 g
- 5 g
- 0.5 g (correct)
- 0.1 g
At what age does the activity of osteoblasts typically become less than that of osteoclasts?
At what age does the activity of osteoblasts typically become less than that of osteoclasts?
- 20-25 years old
- 35-40 years old (correct)
- 45-50 years old
- 30-35 years old
What is the term for the type of bone that is characterized by a shaft and a rounded head at each end?
What is the term for the type of bone that is characterized by a shaft and a rounded head at each end?
Which of the following is a recommended treatment for osteoporosis?
Which of the following is a recommended treatment for osteoporosis?
How often is the entire skeleton essentially replaced through the process of bone remodeling?
How often is the entire skeleton essentially replaced through the process of bone remodeling?
What is the definition of yield stress?
What is the definition of yield stress?
What is the ultimate stress point?
What is the ultimate stress point?
What is the definition of stress?
What is the definition of stress?
What is the breaking stress point?
What is the breaking stress point?
What is the definition of shear stress?
What is the definition of shear stress?
What is the material's behavior up to point B on the stress-strain curve?
What is the material's behavior up to point B on the stress-strain curve?
What is the primary function of the vertebral column?
What is the primary function of the vertebral column?
How many vertebrae are in the spine?
How many vertebrae are in the spine?
What is plotted along the vertical axis in the stress-strain curve?
What is plotted along the vertical axis in the stress-strain curve?
What is the function of the discs in the spine?
What is the function of the discs in the spine?
Up to which point does the stress and strain remain proportional?
Up to which point does the stress and strain remain proportional?
What type of marrow stores fat in the bones?
What type of marrow stores fat in the bones?
How many red blood cells are produced each second by the bone marrow?
How many red blood cells are produced each second by the bone marrow?
What is the significance of point A in the stress-strain curve?
What is the significance of point A in the stress-strain curve?
What is the name of the law that is defined between point OA in the stress-strain curve?
What is the name of the law that is defined between point OA in the stress-strain curve?
What is the function of the bony thorax?
What is the function of the bony thorax?
What happens to the material if it is unloaded before the crossing of point B?
What happens to the material if it is unloaded before the crossing of point B?
What is the significance of point B in the stress-strain curve?
What is the significance of point B in the stress-strain curve?
What is the strain of a material defined as?
What is the strain of a material defined as?
What is the shear modulus of a material?
What is the shear modulus of a material?
What is the strength of a material?
What is the strength of a material?
What type of stress tends to shorten the material along the axis of the applied load?
What type of stress tends to shorten the material along the axis of the applied load?
What is the opposite of elastic deformation?
What is the opposite of elastic deformation?
What type of stress is caused by a pair of opposing forces acting along parallel lines of action?
What type of stress is caused by a pair of opposing forces acting along parallel lines of action?
The compressive stress is the stress state caused by an applied load that tends to elongate the material along the axis of the applied load.
The compressive stress is the stress state caused by an applied load that tends to elongate the material along the axis of the applied load.
The shear modulus is also known as the elasticity modulus.
The shear modulus is also known as the elasticity modulus.
Shear stress is the stress state caused by an applied load that acts to reduce the length of the material along the axis of the applied load.
Shear stress is the stress state caused by an applied load that acts to reduce the length of the material along the axis of the applied load.
The strength of a material is its ability to withstand an applied load without failure or plastic deformation.
The strength of a material is its ability to withstand an applied load without failure or plastic deformation.
Elasticity is the ability of a material to undergo permanent deformation under stress.
Elasticity is the ability of a material to undergo permanent deformation under stress.
Plasticity is the ability of a material to return to its previous shape after stress is released.
Plasticity is the ability of a material to return to its previous shape after stress is released.
Tensile stress is the stress state caused by an applied load that acts to reduce the length of the material along the axis of the applied load.
Tensile stress is the stress state caused by an applied load that acts to reduce the length of the material along the axis of the applied load.
Strain is defined as the ratio of original length to change in length.
Strain is defined as the ratio of original length to change in length.
The stress-strain curve is a graph that plots stress against time.
The stress-strain curve is a graph that plots stress against time.
Yield stress is the point at which a material begins to undergo plastic deformation.
Yield stress is the point at which a material begins to undergo plastic deformation.
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