Question 1
Which would cause the crossbridge to change from a high-force state to a low-force state?
◦ energizing the myosin head
◦ decreasing intracellular calcium
◦ increasing intracellular calcium
◦ decreasing myosin ATPase activity
◦ increasing myosin ATPase activity
Question 2
The action potential traveling along the t-tubule changes the conformation of the
◦ acetylcholine receptor.
◦ ryanodine receptor.
◦ dihydropyridine (DHP) receptor (L-type calcium channel).
◦ Ca
2+ ATPase.