What is the functional role of the T tubules?
A) stabilize the G and F actin
B) enhance cellular communication during muscle contraction
C) hold cross bridges in place in a resting muscle
D) synthesize ATP to provide energy for muscle contraction

Question

Quizplus · Accepted Answer

T tubules are invaginations of the plasma membrane that penetrate deep into the muscle fiber. They help in transmitting the action potential from the surface of the cell to the interior, allowing for synchronized calcium release from the sarcoplasmic reticulum and enhancing communication between sarcoplasmic reticulum and myofibrils. This synchronization ensures efficient muscle contraction.

What Is the Functional Role of the T Tubules