Podcast
Questions and Answers
What is the main function of bone in the skeletal system?
What is the main function of bone in the skeletal system?
- Hormone production
- Protection and support (correct)
- Energy storage
- Maintenance of body temperature
Which of the following is a predominant mineral found in bone?
Which of the following is a predominant mineral found in bone?
- Magnesium
- Iron
- Zinc
- Calcium (correct)
What term is used for bone's ability to resist deformation under a load?
What term is used for bone's ability to resist deformation under a load?
- Stiffness (correct)
- Porosity
- Density
- Flexibility
In the context of bone biomechanics, what does anisotropy refer to?
In the context of bone biomechanics, what does anisotropy refer to?
During which loading mode is bone subjected to forces causing elongation?
During which loading mode is bone subjected to forces causing elongation?
What term is used to describe bone's capacity to absorb energy before failing?
What term is used to describe bone's capacity to absorb energy before failing?
What is the primary factor influencing bone geometry and biomechanical behavior?
What is the primary factor influencing bone geometry and biomechanical behavior?
What is the effect of repetitive loading on bone?
What is the effect of repetitive loading on bone?
Which factor contributes to degenerative changes in bone with aging?
Which factor contributes to degenerative changes in bone with aging?
What type of loading combines tension, compression, and shear?
What type of loading combines tension, compression, and shear?
Which bone feature enhances its strength and stiffness?
Which bone feature enhances its strength and stiffness?
What is the primary response of bone to increased mechanical demands?
What is the primary response of bone to increased mechanical demands?
Bone's behavior under different loading modes includes all EXCEPT:
Bone's behavior under different loading modes includes all EXCEPT:
Viscoelasticity in bone refers to its:
Viscoelasticity in bone refers to its:
In the context of bone biomechanics, stress raisers are:
In the context of bone biomechanics, stress raisers are:
Which aspect primarily influences the biomechanical properties of bone?
Which aspect primarily influences the biomechanical properties of bone?
Which of the following statements about torque is true?
Which of the following statements about torque is true?
What term is used to describe the rate of change in angular velocity?
What term is used to describe the rate of change in angular velocity?
Which type of lever has the resistance between the applied force and the fulcrum?
Which type of lever has the resistance between the applied force and the fulcrum?
What does stability refer to in the context of biomechanics?
What does stability refer to in the context of biomechanics?
Which method is used to determine the total-body center of mass location?
Which method is used to determine the total-body center of mass location?
What term is used for the change in linear speed for a body traveling on a curved path?
What term is used for the change in linear speed for a body traveling on a curved path?
Which of these statements about equilibrium is true?
Which of these statements about equilibrium is true?
What is the definition of moment arm?
What is the definition of moment arm?
In biomechanics, what does increasing the size of the base of support in the direction of an external force do?
In biomechanics, what does increasing the size of the base of support in the direction of an external force do?
What is the primary characteristic of third-class levers in human movement?
What is the primary characteristic of third-class levers in human movement?
Which statement about the center of gravity (CG) of an object is true?
Which statement about the center of gravity (CG) of an object is true?
What is torque in biomechanics?
What is torque in biomechanics?
Which statement about balance is true?
Which statement about balance is true?
'Quantitative analysis involves stick-man animation.' Is this statement true or false?
'Quantitative analysis involves stick-man animation.' Is this statement true or false?
'Stick-man animation can be used to plot force and torque at each phase of movement.' Is this statement true or false?
'Stick-man animation can be used to plot force and torque at each phase of movement.' Is this statement true or false?
'The segmental method is used to determine the total-body center of mass location.' Is this statement true or false?
'The segmental method is used to determine the total-body center of mass location.' Is this statement true or false?
Study Notes
Bone Functions and Properties
- Main function of bone: Provides structure, protection for organs, and attachment points for muscles.
- Predominant mineral in bone: Calcium phosphate.
- Ability to resist deformation under load: Stiffness.
- Anisotropy in bone: Refers to different mechanical properties in different directions.
- Loading mode causing elongation: Tension.
- Capacity to absorb energy before failure: Toughness.
- Primary factor influencing bone geometry and behavior: Mechanical loading.
Bone Response and Aging
- Effect of repetitive loading on bone: Promotes remodeling and adaptation to stress.
- Factor contributing to degenerative changes with aging: Decreased hormonal support and reduced mechanical loading.
- Loading type that combines tension, compression, and shear: Flexural loading.
- Bone feature enhancing strength and stiffness: Cortical bone.
Biomechanical Behavior
- Primary response of bone to increased mechanical demands: Remodeling to enhance strength.
- Bone behavior includes all except: Uniform elasticity under all conditions.
- Viscoelasticity in bone: Indicates that bone exhibits both viscous and elastic properties when loaded.
- Stress raisers in bone biomechanics: Structural irregularities that increase localized stress.
Torque and Lever Mechanics
- Biomechanical property primarily influenced by: Material composition and structure.
- True statement about torque: It is the rotational equivalent of linear force.
- Rate of change in angular velocity: Angular acceleration.
- Type of lever with resistance between applied force and fulcrum: Class 2 lever.
- Stability in biomechanics: The ability to maintain equilibrium despite disturbances.
Center of Mass and Movement
- Method to determine total-body center of mass: Segmental method.
- Change in linear speed for a body on a curved path: Centripetal acceleration.
- True statement about equilibrium: It exists when the sum of forces and moments acting on a body are zero.
- Definition of moment arm: Distance from the fulcrum to the line of action of the force.
Support and Gravity
- Increasing the size of the base of support in the direction of external force: Enhances stability.
- Primary characteristic of third-class levers: The effort is applied between the load and the fulcrum.
- True statement about center of gravity (CG): The CG is the point at which the weight of an object is concentrated.
- Torque in biomechanics: The tendency of a force to rotate an object around an axis.
Balance and Analysis Methods
- True statement about balance: It involves maintaining the center of mass over the base of support.
- Statement about quantitative analysis and stick-man animation: False; quantitative analysis is more than just stick-man animation.
- True statement about stick-man animation: True; it can plot force and torque during movement phases.
- The segmental method's use: True; it accurately determines the total-body center of mass location.
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Description
Test your knowledge about the functions, components, and minerals of the skeletal system and bone structure with this quiz. Questions cover topics such as bone function, organic matrix components, and bone minerals.
