sarcomere structure Flashcards
1
Q
z lines
A
the end boundaries of sarcomere
2
Q
thick filaments
A
made mainly of protein
3
Q
myosin
A
are in the center of sarcomere
4
Q
thin filaments
A
contain protein called actin
5
Q
actin are
A
at the ends
6
Q
actins are attached to
A
z lines
7
Q
myosin filaments are
A
located in the middle of sarcomere and are anchored to zlines by the protein titin
8
Q
myosin and actin are
A
contractile proteins of a muscle fiber
9
Q
2 inhibitory proteins that are also present are
A
troponin and tropomyosin
10
Q
troponin
A
part of thin filaments and prevent sliding
11
Q
tropomyosin
A
relaxed
12
Q
sarcoplasmic reticulum
A
surrounds the sarcomeres
13
Q
the endoplasmic reticulum of muscle cells
A
sarcoplasmic reticulum
14
Q
sarcoplasmic reticulum is a reservoir for
A
calcium ions
15
Q
calcium ions are essential for
A
contraction process
