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18 Thorax and Lungs

18 Thorax and Lungs - 18 Thorax and Lungs(revised L...

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18 Thorax and Lungs (revised 10/01/08) L. Meneghini MSN RN
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Anterior Thoracic Landmarks Substernal Notch- U shaped above sternum Sternum-Breastbone Manubrium Xiphoid Costal Angle-Costal margins meet at Xiphoid
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Anterior Thoracic Chest
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Thorax Vertebra Prominens-C7/T1 Spinous Process Scapula Twelfth Rib
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Thorax Reference Lines ( be familiar with these ) Mid sternal line Midclavicular lines Scapular lines Vertebral lines Midaxillary line Anterior axillary line Posterior axillary line
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Lobes of lung RUL RML RLL LUL LLL
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Anterior Lobes
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Posterior Lobes
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Thorax and Lungs Mechanics of Respirations: 1. Supplies Oxygen to the body for energy production 2. Removes CO2as the waste product of energy 3. Maintains homeostasis (acid-base) 4. Maintains heat exchange
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Thorax: Development Considerations Infants and Children : Once cord is cut, blood is cut from the placenta and it gushes into the pulmonary circulation, the heart valves begin to close and the pulmonary and systemic circulation is functional. Alveoli reach the 300 million mark by adolescence
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Thorax Pregnancy : The uterus enlarges and elevates the diaphram 4 cm during pregnancy, however the thorax adjusts and compensates. The increase in estrogen relaxes the chest cage ligaments The growing fetus increases oxygen demand and this is met by increasing tidal volume .
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