BIOSC-139 Lecture Notes - Lecture 2: Furosemide, Pelvic Cavity, Muscles Of Respiration
12 Aug 2020
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Document Summary
Thoracic cavity- divided into 4 smaller cavities pleural cavity (2 lungs), pericardial cavity (heart), mediastinum (tubing to & from heart/lungs & esophagus located), diaphragm. Esophagus goes from throat to stomach (passes food) Posterior cavity (aspect) spinal cord, vertebral column (canal) Fig 1. 9 serous membranes in cavities. Pleural cavity space where lung is. Visceral pleural outermost covering of lung. Innermost covering of thoracic wall parietal pleural lines ribcage. Space between parietal pleural & visceral pleural pleural cavity w/ serous fluid. Lubricant (watery) produced by serous membrane. Why do you have serous fluid? each other. Pleural cavity does not exist there are no spaces; 2 membranes (v. p & p. p) rub along. To prevent friction b/c lungs move independently of body wall. Parietal pericardium lines the cavity in which heart is in. Pericardial cavity space between 2 membranes w/ serous fluid. If the regions are healthy, the space in the cavity should not exist. Inflammatory response cleanup & repair process.
