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Odds and Ends

Odds and Ends. Drawing an EKG waveform properly What to include in your hemorrhage diagram (Tips and Help Schedule at http://webs.wofford.edu/davisgr/bio342/hemorrhagediagramtips.htm Hypovolemic shock? Death? Whatever you can do well in 15 minutes!

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Odds and Ends

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  1. Odds and Ends • Drawing an EKG waveform properly • What to include in your hemorrhage diagram (Tips and Help Schedule at http://webs.wofford.edu/davisgr/bio342/hemorrhagediagramtips.htm • Hypovolemic shock? • Death? • Whatever you can do well in 15 minutes! • Revised Abstracts may be turned in anytime but no later than the last Friday of class (Dec 7th.)

  2. 1QQ # 28 for 10:30Answer one • Diagram the response to a drop in oxygen delivery to the kidney. • Diagram the effects of sympathetic stimulation of systemic arterioles that leads to an increase in mean arterial pressure. • Diagram the effects of sympathetic stimulation of veins that leads to an increase in mean arterial pressure.

  3. ACE expressed on luminal surface of pulmonary endothelial cells.

  4. Why the difference in partial pressures in Air and Alveoli? Ventilation by Bulk Flow Gas exchange by Diffusion Where should the receptors be for the negative feedback loop for homeostasis? Gas exchange Gradient for CO2 is only 6 mmHg; CO2 is more 20x more soluble and permeable than O2

  5. Peripheral Chemoreceptors • Carotid bodies (not carotid sinuseswhich are baroreceptors) • Aortic bodies (not aortic arch baroreceptors) Central Chemoreceptors in medulla (sensitive to H+ in interstitial fluid of medulla) To ponder: Why should there be three sets of chemoreceptors?

  6. RespiratoryPhysiology The physics of air flow Flow in tubes 2) Ventilation Poiseulle’s equation

  7. The Structure underlying the function: Upper Respiratory Tract Lower Respiratory Tract Intercostal muscles Bronchitis= infection/inflammation of conducting airways Asthma = smooth muscles contract →increase resistance to airflow in conducting airways.

  8. Pneumothorax (unilateral due to each lung having its own compartment. Visceral pleura and parietal pleura separated by fluid-filled pleural cavity which allows lung and chest wall to slide relative to each other but remain adhered unless air enters the pleural cavity (which leads to collapse of the lung and outward expansion of chest wall on that side.) Greg R. and the story of spontaneous pneumothorax

  9. Upper Tract Sleep Apneaa)obstructive,b)central & CPAP

  10. Continuous Positive Airway Pressure

  11. Bronchopulmonary segments and Surgical resection Why is lung cancer so common? How are the delicate living tissues of the respiratory protected?

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