Skeletal Muscle Mechanics Flashcards
1
Q
The greater the preload the greater or less the passive tension of the muscle?
A
the greater the passive tension
2
Q
What is isotonic contraction?
A
When muscle shortens because it generates more force than acting upon
3
Q
What isometric contraction?
A
When a muscle won’t shorten because it is unable to generate more force than its working against
4
Q
What are some characteristics of white muscle?
A
large mass per motor unit
high ATPase acitivity
high capacity for anaerobic glycolysis
low myoglobin
5
Q
Examples of white muscle?
A
ocular muscles
leg muscles in sprinters
6
Q
What are some characteristics of red muscle?
A
small mass per motor unit
lower ATPase activity (slower muscle)
high capacity for aerobic metabolism (mitochondria)
high myoglobin (imparts red color)
