The serratus posterior superior andserratus posterior inferior are both involved in respiration but invery different ways. Knowing this, answer the following questions(1-3):

1. What function does each have in respiration?
   superior-
   
   inferior-
2. How is each muscle shaped? How are the two muscles locatedrelative to one another?

3. Would that make these muscles agonist-antagonists, orsynergists in respiration specifically? Explain how you know.

4. Which serratus posterior muscle would be considered asynergist with the external intercostals during forced respiration?Explain how you know.

5. What is one function of the diaphragm?

6. What is plantar fasciitis? Describe what part of the body isaffected as well as what happens to that part.