1. List the respiratory muscles and outline the basic process of inspiration and expiration. 2. Describe lung...

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Medical Sciences

1. List the respiratory muscles and outline the basic process ofinspiration and expiration.
2. Describe lung compliance and the factors that impactcompliance.
3. List and describe the 8 different respiratory volumes weheard about.

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1 The muscles of respiration are those muscles that contribute to inhalation and exhalation by aiding in the expansion and contraction of the thoracic cavity The diaphragm and to a lesser extent the intercostal muscles drive respiration during quiet breathing Accessory muscles of respiration The term accessory muscles refers to those that assist but do not play a primary role in breathing Use of these while at rest is often interpreted as a sign of respiratory distressThere is no definitive list of accessory muscles but the sternocleidomastoid and the scalenes anterior middle and posterior are typically included as they assist in elevating the rib cageThe involvement of these muscles seems to depend on the degree of respiratory effort During quiet breathing the scalenes are consistently physically active while the sternocleidomastoids are quiet With an increase in the respiratory volume sternocleidomastoids also become activeBoth muscles are simultaneously activated when one breathes in at the maximal flow rate Apart from the above neck muscles the following muscles have also been observed contributing to respiration serratus anterior pectoralis major and pectoralis minor trapezius latissimus dorsi erector spinae iliocostalis quadratus lumborum serratus posterior superior See Answer

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