1.4 Musculoskeletal System And Movement Analysis Flashcards
What are the 2 types of joints?
- Ball and socket - allows movement in every direction
- Hinge - only allows movement in one direction
Define flexsion
Decreasing the angle between the bones of a joint
Define extension
Increasing the angle between the bones of a joint
Joint actions in sagittal planes and transverse axis
- flexion, extension, hyper extension
Joint actions in frontal planes and sagittal axis
- adduction, abduction
Joint actions in transverse planes and longitudinal axis
- horizontal adduction, horizontal abduction
Sporting example of ST
Forward role
Sporting example of FS
Cartwheel
Sporting example of TL
Spin/log roll
Definition of agonist
The muscle responsible for the movement that’s occurring
Definition of antagonist
The muscle that works in opposition to the agonist to help produce a co-ordinated movement
What are isotonic contractions?
When a muscle contracts to create movement, there are 2 types
What are concentric contractions?
When a muscle shortens under tension
What are eccentric contractions?
When a muscle lengthens under tension or performs negative work and acts as a brake
What are isometric contractions?
When a muscle is under tension but there is no visible movement, eg: crucifix
Define sagittal planes
Divides the body into right and left halve
Define frontal planes
Divides the body into front and back halves
Define transverse planes
Divides the body into upper and lower halves
Define all 3 types of axis
Transverse axis - runs from side to side across the body
Sagittal axis - runs from front to back
Longitudinal axis - runs from top to bottom
