8 - properties of uniarticular and biarticular muscles Flashcards
1
Q
passive insufficiency
A
cannot be passively lengthened - stretched - enough to achieve full range of motion
2
Q
active insifficiency
A
cannot shorten enough to actively achieve full range of movement at all joints crossed
3
Q
tenodesis
A
tendons at distal joints move these joints without any muscle action around them
4
Q
why arent there many uniarticular muscles in the limbs
A
energetically inefficient
more efficient to cross multiple joints and effectt mutliple joints at once
5
Q
synergism
A
- preventing unwanted action at a moving joint or an unwanted action at distal/different joint
- position the joint to optimise movement
6
Q
isometric action
A
muscles can shorten up to 40% of their resting length
optimal force is produced at a certain muscle length
