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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is isotonic contraction?

A

When muscle shortens because it generates more force than acting upon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What isometric contraction?

A

When a muscle won’t shorten because it is unable to generate more force than its working against

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Examples of white muscle?

A

ocular muscles

leg muscles in sprinters

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
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)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly