Given These Events: 1) Calcium Ions Move Along Their Concentration

Multiple Choice

Given these events: 1) calcium ions move along their concentration gradient
2) action potential in cell membrane
3) opening of ion channels in sarcoplasmic reticulum
4) action potential in T tubules
5) actin to myosin cross-bridges form
Arrange them in the correct sequence as they participate during skeletal muscle contraction.

A) 1, 2, 5, 3, 4
B) 1, 5, 4, 3, 2
C) 2, 4, 3, 1, 5
D) 2, 1, 5, 3, 4
E) 5, 3, 4, 2, 1