Anatomy of the muscle cell Flashcards
1
Q
Muscle cell
A
muscle fiber
2
Q
Cell membrane
A
Sarcolemma
3
Q
Cytoplasm
A
Sarcoplasm
4
Q
Modified endoplasmic reticulum
A
sarcoplasmic reticulum
5
Q
T-tubules
A
continuation of muscle fiber membranes, making a hole inside sarcolemma.
6
Q
Triad
A
1 T-tubules and two terminal cisternae.
7
Q
terminal cisternae
A
Longitudinal tubules with enlarged end regions of the sarcoplasmic reticulum.
8
Q
Motor proteins
A
Thick filament (myosin) and thin filament (actin).
9
Q
regulatory proteins
A
tropomyosin and troponin
10
Q
accessory proteins
A
titin and nebulin
11
Q
Myosin determines what part of the contraction?
A
Speed
