Muscle physiology - Sarcromeres Flashcards
1
Q
What is the structural and functional part of the muscle (myofibril)
A
Sarcomere
2
Q
Where do sarcromeres sit ?
A
It sits between two Z lines
3
Q
Sarcromeres have different bands what are they ?
A
The dark band, called the A band, has thick and thin filaments.
The light band, called the I band, only has thin filaments.
4
Q
What “ line” is at the centre of the dark bands ?
A
The M line
5
Q
What line is at the centre of the light bands ?
A
Z lines
6
Q
During muscle contraction what happens to the sarcomeres ?
A
They shorten
