3. State the functions of i) Diaphragm ) Alveol
Answers
Answer:
Alveoli are the endpoint of the respiratory system which starts when we inhale air into the mouth or nose. During inhalation, alveoli expand as the negative pressure in the chest is created by contraction of the diaphragm. During exhalation, the alveoli recoil (spring back) as the diaphragm relaxes.
Explanation:
- Diaphragm-The diaphragm, located below the lungs, is the major muscle of respiration. It is a large, dome-shaped muscle that contracts rhythmically and continually, and most of the time, involuntarily. Upon inhalation, the diaphragm contracts and flattens and the chest cavity enlarges.
- Alveoli- The alveoli are where the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out. Oxygen breathed in from the air passes through the alveoli and into the blood and travels to the tissues throughout the body. The two main functions are : moving air in and out of your lungs (ventilation) oxygen-carbon dioxide exchange (diffusion) pumping blood through your lungs (perfusion).
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Answer:
Diaphragm anatomy and function
It contracts and flattens when you inhale. This creates a vacuum effect that pulls air into the lungs. When you exhale, the diaphragm relaxes and the air is pushed out of lungs. ... The diaphragm increases abdominal pressure to help the body get rid of vomit, urine, and feces.
Alveoli. An alveolar duc opens into a cluster of alveoli. An alveolus is one of the many small, grape-like sacs that are attached to the alveolar ducts. An alveolar sac is a cluster of many individual alveoli that are responsible for gas exchange.