Part 2 Flashcards
1
Q
What is another name for skeletal muscle fibres?
A
Myofibres
2
Q
What is the name of the cytoplasm of a myofibre?
A
Sarcoplasm
3
Q
What is most of the sarcoplasm occupied with?
A
Myofibrils which are cylindrical bundles of contractile proteins
4
Q
What is the sarcolemma?
A
The cell membrane of a striated muscle cell
5
Q
What is a sarcomere?
A
The repeating subunit of a myofibril; the smallest contractile unit of a muscle fibre
6
Q
What do M-line proteins do?
A
aka myomesin, attaches myosin to each other and helps stabilise their position
7
Q
What does titin do?
A
Provides additional support by anchoring myosins to Z-discs and also help muscles to return to a resting length
