Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
6 Cards in this Set
- Front
- Back
|
During muscle contraction what happens to the A band?
|
No change
|
|
|
During muscle contraction what happens to the H band?
|
Shortens
|
|
|
During muscle contraction what happens to the I band?
|
Shortens
|
|
|
During muscle contraction what happens to the Z lines?
|
They move closer together
|
|
|
What type of skeletal muscle fibers have:
Decreased ATPase activity Increased capacity for aerobic metabolism Increased mitochondrial content Increased myoglobin |
Red fibers (Type I)
Slow contraction Best for slow, posture-maintaining muscles (myoglobin is what gives the red color) |
|
|
What type of skeletal muscle fibers have:
Increased ATPase activity Increased Capacity for anaerobic glycolysis Decreased mitochondrial content Decreased myoglobin |
White Fibers (type II)
Fast contracting Best for dast short-termed skilled motions |
