venous return, muscular system, vascular shunt mechanism Flashcards
MS
definition of origin
is a point of muscle attachment that remains relatively fixed during contraction
MS
definition of insertion
is a point of muscle attachment that moves towards its origin during contraction
MS
definition of agonist
- prime mover
muscle directly responsible for movement
MS
definition of antagonist
muscle which relaxes to allow for movement
MS
definition of fixator
stabilises the origin for movement
MS
definition of synergist
helps or contracts to prevent unwanted movement
VR
definition of Venus return
it is the transportation of blood back to the heart through the venuels and veins
VR
what are the mechanisms for Venus Return
- muscle pump
- respiratory pump
- pocket valves
- smooth muscle
- gravity
VSM
what is the law and definiton
starlings law
high venous return means high cardiac output
VSM
at rest % of blood direction
at rest
- vital organs - 80%
- working muscles - 20%
VSM
during exercise % of blood direction
during exercise
- working muscles - 80%
- vital organs - 20%
