Discussion Set 2 & Response

Include citations in APA format and no plagiarism. Must be at least one paragraph in length. It must also be free of spelling and grammatical errors. A paragraph format must be used.

– 4. What are the muscles involved in respiration? Describe their roles in either normal, restful breathing or forced breathing. Pick one specific muscle to discuss.

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Also, make a one-paragraph response to this paragraph below. Please use citations and check the spelling and the grammar plus no plagiarism.

1. Response.

Good morning class-

I am going to discuss one of the primary muscles involved in respiration, the diaphragm. The diaphragm along with the intercostal muscles are the principal muscles that are involved in all types of respiration and breathing. The diaphragm is a dome shaped muscle that flattens and contracts during inspiration and relaxes and returns to its normal shape during expiration. As the prime mover of the respiratory muscles, the diaphragm makes about 2/3 of the pulmonary airflow on its own (SALADIN & CUSHMAN, n.d.). Most of the time it is an involuntary muscle as breathing is usually an involuntary activity but just as breathing can be voluntary when it is thought about, the diaphragm can be voluntary as well.

The diaphragm is involved in normal, forced, and restful breathing. During forced breathing, especially during forced expiration the lowering of the diaphragm boosts the pressure in the abdomen which aids in certain activities such as, childbirth, urination, defecation, and vomiting.

Source: Saladin, K. S., Gan, C. A., & Cushman, H. N. (2018). Anatomy & Physiology: The Unity of Form and Function. New York, NY: McGraw-Hill Education.

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