PPT-Gas Exchange and Pulmonary Circulation

Gas Pressure Gas pressure is caused by the molecules colliding with the surface In the lungs the gas molecules are colliding with the surfaces of the respiratory passages and alveoli Higher concentrations of gas will produce more collisions and cause a higher pressure. Teka Siebenaler RRT. Cardiopulmonary Services . University of Minnesota . Amplatz. Children’s Hospital. Fetal Lung Stages of Development. Embryonic Stage 3. rd. -8. th. week. Neural Tube closure. Essentials of Exercise Physiology. Respiration. External respiration:. . ventilation and exchange of gasses in the lungs (pulmonary function).. Internal respiration. : . ventilation and exchange of gasses in the tissues (pulmonary function).. . Associate Professor. Department of Physiology. KGMU. Respiratory System. LECTURE:7. Contents. Pulmonary circulation- features. Gaseous transport: CO. 2 . CO. 2. -Hb dissociation curve. Circulatory Disturbances. Learning Objectives. Venous thrombosis: causes and effects. Pulmonary embolism: pathogenesis, clinical manifestations, diagnostic techniques. Arterial thrombosis: causes and effects. Respiration. External respiration:. . ventilation and exchange of gasses in the lungs (pulmonary function).. Internal respiration. : . ventilation and exchange of gasses in the tissues (pulmonary function).. 1. These are the lower compartments of the heart. Circulation Review. 2. This vein feeds the right atrium.. Vena Cava b. Pulmonary Vein . c. Femoral Vein d. Pulmonary artery. Circulation Review. 3. This artery leaves the right ventricle.. Blood Flow Studies. Heart And Vessels. X-ray plain film for pulmonary vessels only. Nuclear Medicine – V/Q Scan. Angiography. CT angiography. Magnetic resonance angiography. Ultrasound (. doppler. ). PULMONARY EDEMA. 1. LECTURE NOTES BY:. Dr. . Syed Mohammad Zub. air. MBBS(KE) BS (PU) DHA (CCM) FWHO(UK) MBA;FACHE (US) M.PHIL (PHYSIOLOGY). Assist. Prof Physiology . KING EDWARD . MEDICAL. UNIVERSITY, Lahore.. Murat DiramaliMD Department of Anatomy Abant Izzet Baysal University Faculty of Medicine Bolu Turkey29mdiramaliyahoocomActa Medica AnatoliaIntroductionFor centuries Anatolia and Mesopotamia were homel THE PULMONARY AND SYSTEMIC CIRCULATION. .. THE PULMONARY CIRCULATION. CARRIES BLOOD BETWEEN THE HEART AND THE LUNGS.  THIS CIRCULATION BEGINS AT THE RIGHT VENTRICLE AND ENDS AT THE LEFT ATRIUM. 3. Oxygen-Poor blood is pumped out of the Right Ventricle of the Heart into the Lungs through the Pulmonary Arteries.  These are the only Arteries in the Body to Carry Deoxygenated Blood. . Types of circulatory systems. Diffusion – oxygen and carbon dioxide, based on body shape and size. Gastrovascular. cavities . – distribution of substances throughout the body and in digestion.. Open circulatory system . In the fully developed human, the heart serves two main purposes. . The right heart pumps blood to the lungs for oxygenation and the left heart pumps oxygenated blood to rest of the body. . In the embryo and fetus, the lungs do not oxygenate the blood. . Differences from Systemic Circulation . Low peripheral Resistance . Low pressure . Systolic20-25 mm Hg, Diastolic 6 -12 mm Hg & Mean 15mm Hg. Pulmonary Arterioles Thin walled, large lumen . Pulmonary Capillaries shorter and wider and blood flow is pulsatile . An embolus: is a detached intravascular solid, liquid, or gaseous mass that is carried by the blood to a site distant from its point of origin. . . Embolism: - . This is the passage and eventual trapping within the vasculature of any of a wide variety of mass objects..