MUSCLE MECHANICS HIGH YIELD Flashcards
name these muscles
stores oxygen while making them very efficient at performing sustained, slow pulls of contraction
red muscles
name these muscles
tend to tire more quickly when they are subjected to sustained loads over long period of time
white muscles
name these muscles
angles of muscle pull will be greater than 45 degrees
spurt muscles
name these muscles
angle of muscle pull will be less than 45 degrees
shunt muscles
what are the functions of muscles?
stabilize articulations
create motion
resist motion
resist bone stress
name this function of muscle:
creates stability at joint articulations
resist rotational motions to maintain compression at joints
stabilize articulations
name this function of muscle:
performs accelerator function
causes internal or external rotation during the swing phase
create motion
name this function of muscle:
perform decelerator function
resist and slow down motion during the contact period
resist motiom
name this function of muscle:
muscles help bones resist rotational forces
resists rotatory motion on bones at a joint, muscles help cause compression at the joint
resist bone stress
so with the angle of application, what is the effect when its higher?
the higher the angle of application of the muscle pull, the more efficient the contraction will be
what happens to the muscle and ligaments during there elastic response?
they have proprioceptors present to sense the position of the muscle or joint on which the ligament is working to stabilize
*they activate the proprioceptors
what period does the elastic response occur?
contact and midstance period because the elastic stress on the muscles change quickly as BW moves forward
examples of muscles that produce an elastic response?
gastroc
tibia-fibular syndesmosis
spring ligament
upper trunk in gait rotates opposite the lower trunk
