Muscular system Flashcards
1
Q
Basic contractile unit of skeletal muscle
A
Sarcomere
2
Q
Structural components of a muscle fiber
A
myoglobin
transverse tubules
sarcolemma
sarcoplasmic reticulum
3
Q
Excitation occurs when a wave of excitation spreads through the…
A
T tubules
4
Q
Which type of muscle has uninucleated cells?
A
Smooth muscle
5
Q
All of the muscle fibers innervated by a single motor nerve fiber
A
Motor unit
6
Q
Contractile unit that extends from one z-disc to the next
A
Sarcomere
