Excitation-contraction coupling

Question 1

7

Answer 1

Action potentials are produced and propagate along sarcolemma and T-tubules

Question 2

8

Answer 2

Voltage sensitive receptors in T-tubules cause calcium release channels to open

Question 3

9

Answer 3

Calcium ion concentration in cytosol increases

Question 4

10

Answer 4

Calcium ions bind to troponin

Question 5

11

Answer 5

Troponin/Tropomyosin complex moves of binding sites of actin

Question 6

12

Answer 6

Myosin binding sites on actin are exposed