A Skeletal Muscle Deprived of Adequate ATP Supplies Will

Question

A skeletal muscle deprived of adequate ATP supplies will
A) immediately relax.
B) release all actin-myosin bonds.
C) enter a state where actin and myosin are unable to separate.
D) fire many more action potentials than usual and enter a state of "rigor."
E) sequester all free calcium ions into the sarcoplasmic reticulum.

Accepted Answer

Without adequate ATP supplies, the myosin heads cannot detach from the actin binding sites, causing the muscle to remain contracted in a state known as rigor. This prevents the muscle from being able to relax.