Myofibril Anatomy Flashcards
1
Q
Myofibril
A
Highly structured proteins
2
Q
Sarcolemma
A
Cell membrane
3
Q
T-tubule
A
Help depolarization spread evenly
4
Q
Mitochondrion
A
ATP
5
Q
Sarcoplasmic Reticulum (SR)
A
Ca2+ storage
6
Q
Sarcomere
A
Organized proteins (myofiliaments)
Z line, I band, M band, H band (within M band), I band, Z line
7
Q
Myosin
A
Thick filament
8
Q
Myosin Heads
A
Binding sites to actin
9
Q
Crossbridge
A
When myosin is bound
10
Q
Three proteins that make up thick filament
A
Actin, tropomyosin, troponin
11
Q
Titin
A
Connects to myosin protein in thick filament