)Skeletal muscle contraction is triggered to begin when calcium is released from
A)myofibrils
B)mitochondria
C)terminal cisterns of sarcoplasmic reticulum
D)T-tubules

Question

Quizplus · Accepted Answer

Calcium is stored in the terminal cisterns of the sarcoplasmic reticulum and is released into the cytoplasm when an action potential travels down the T-tubules. This calcium release triggers the contraction of the muscle fiber.

)Skeletal Muscle Contraction Is Triggered to Begin When Calcium Is