A  single twitch has three phases: WHAT IS THE CORRECT ORDER OF THESE?   1 –Relaxation phase Ca2+ levels in cytosol fall Cross-bridges detach and tension decreases 2  –Latent period Action potential moves across sarcolemma SR releases Ca2+ 3  Contraction phase Calcium ions bind to troponin and cross-bridges form Tension builds to a peak

A  Charlie horse in the leg is a good example of incomplete tetnus. 

29). Antibiotics administered to animals are not completely absorbed or metabolized in vivo.

  Types of muscle wasting due to prolonged inactivity:    Mark all that are correct: 

7). Your physician had prescribed a β-lactam antibiotic for your sister. Your sister took biology in high school and is refusing to take the antibiotic because she says that it will affect osmosis in her cells. Which reason can you use to help your sister understand how the antibiotic will work?

Action potential begins with movement of  positively charged Calcium 

33). The evolution of antibiotic resistance is an example of _____.

12). What is the environmental pressure in the case of antibiotic resistance?

A MOTOR UNIT CONSISTS OF A MOTOR NEURON AND ALL THE MUSCLES IT STIMULATES. 

The sodium and chloride ion concentrations are lower inside the cell than outside, and the potassium concentration is greater inside the cell.