Biomechanics Test - T2 Flashcards
Which type of joint allows for the greatest range of motion?
Synovial.
Between the bones of the cranium are an example of what type of joint?
Fibrous joint.
Which kind of joint permits triaxial movement such as circumduction?
Ball and socket.
Between the atlas and axis is an example of what type of joint?
Pivot joint.
4 accessory structures in synovial joints?
- Meniscal cartilages
- Extracapsular ligaments
- Intracaspular ligaments
- Tendons
Which ligament strengthens the shoulder joint?
The glenohumeral ligament.
Menisci?
Fibrocartilagious discs in the knee.
Which type of motion is used to describe the flight of a softball after it leaves the bat and sails in an arc over the outfield fence?
Curvilinear motion.
What does the term curvilinear describe?
Translational motion along a curved line.
What does the term acceleration describe?
The time rate of change of velocity.
How does mass differ from weight?
Weight is a force and mass is the quantity of matter in a body.
What will the body do if there is an unbalanced force at rest?
Accelerate.
Inertia?
A body’s resistance to having its state of motion changed.
How can angular motion be defined?
Rotation about an axis of rotation.
How can angular velocity be defined?
How quick the rotation is.
Why is mass an important quantity in kinetics?
Because it quantifies the inertia of the body.
What does a free-body diagram display?
The external forces acting on a body.
Which of the following are examples of external forces which may act on the human body:
(a) Weight
(b) Mass
(c) Friction
(d) Ground reaction force
(e) Muscle force
A
C
D
If location is constant, velocity…
…has to be zero.
How is torque defined?
- The tendency of a force to cause rotation.
- The turning effect of a force.
- The product of force and moment arm.
The angular distance covered by a rotating object will always be…
…at least equal to, if not greater than, the angular displacement covered by the object.
What are the 4 tasks & the correct order in Knudson’s (2013) 4 task model of qualitative analysis?
- Preparation
- Observation
- Evaluation/Diagnosis
- Intervention
When a runner has completed one full lap around a 400 m track in a time of 50 s, what is the runner’s displacement with respect to the starting position?
0m.
Example of an absolute angle?
An angle formed between a segment and a horizontal reference line.
