Answer Happy

1. The figure below shows the tension measured in a muscle, with arrows representing the arrival of action potentials. You inject this muscle with a drug that increases the permeability of mechanically-gated Cat channels when they are stimulated. Predict how tension will change by drawing a new series of myograms on the axes below (assume the timing of AP arrival is the same). Explain the mechanistic reason for any changes, include the location of these mechanically-gated Cat channels, and name the mechanism this muscle is using to build tension. (6) + Time (ms) Tension