Where is the phot for the video?
        
             
        
        
        
<span>Sodium channels close when not occupied
</span><span>Sodium ions diffuse through and enter the cell.
</span>
Then they leave the cell.
The sodium diverts in the cell layer have receptor locales for acetylcholine.
        
             
        
        
        
 The
correct answer is the gastrocnemius muscle.
<span>The
gastrocnemius muscle is a muscle located in the back part of the lower leg of
humans. The gastrocnemius together with the soleus muscle forms half of the
calf muscle with the function is plantar flexing the foot at the ankle joint
and flexing the leg at the knee joint.</span>
        
             
        
        
        
It would be the last one.
        
             
        
        
        
It's known as severity. 
The fact that her pain is on the scale between 1-10 refers to the severity of her pain.
Hope that helped ^U^