1. Initiation of Exercise
- The respiratory rate increases during initiation of exercise because it necessitates the contraction of muscles which needs a greater amount of oxygen to work.
2. Moderate exercise
- When exercising at a moderate intensity, the supply of air to the lungs increases as the breathing mechanism regulates by minimizing the stress exerted on the respiratory muscles.
3. Abrupt ascent into high altitudes
- At altitude, breathing becomes unstable, shifting between episodes of fast respiration and periodic breathing which are all caused by the blood's decreased level of oxygen.
4. Paralysis of phrenic nerve
- The phrenic nerve provides primary motor supply to the diaphragm and its paralysis leads to a condition wherein one side of the diaphragm becomes weak or paralyzed.
5. Severe anemia
- The heart rate of people with severe anemia increases due to their systems' constant struggle to restore normal oxygen levels.
6. Advanced pregnancy
- The respiratory depth or rate increases due to the increase of progesterone production and the growing womb. Respiratory infections are also at high risk due to various factors such as decreased respiratory endurance, lung elasticity, etc.
References
- Respiration during Exercise. (n.d.). McGraw Hill Medical. https://accessphysiotherapy.mhmedical.com/content.aspx?bookid=3100§ionid=259271559
- Exercise Physiology: Respiratory contribution. (n.d.). https://www.medicine.mcgill.ca/physio/vlab/exercise/resp.htm
- Cogo, A. (2011). The lung at high altitude. Multidisciplinary Respiratory Medicine, 6(1), 14. https://doi.org/10.1186/2049-6958-6-1-14
- Moawad, H., MD. (2023, May 13). What happens to people with anemia? Verywell Health. https://www.verywellhealth.com/anemia-7495917
- LoMauro, A., & Aliverti, A. (2015). Respiratory physiology of pregnancy. Breathe, 11(4), 297–301. https://doi.org/10.1183/20734735.008615
POST-LECTURE ACTIVITY: RESPIRATORY SYSTEM
PAULINO, Lettice Jeazle G.
The due date for posting to this forum was Thursday, 26 October 2023, 11:59 PM.