PPT-Ventilation - moves air to and from alveoli

Functions of Respiratory System Gas exchange between air and circulating blood Defend respiratory system from pathogens Help homeostasis of blood volume pH and pressure Permit . 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).. Dead Space. dead space. is the volume of air which is inhaled that does not take part in the gas exchange, either because it (1) remains in the conducting airways, or (2) reaches alveoli that are not perfused or poorly perfused. In other words, not all the air in each breath is available for the exchange of oxygen and carbon dioxide.. exchange by diffusion between air in the . lungs and blood in capillaries.. What can you tell me about alveoli?. Alveoli. The tiny air sacs at the end of each bronchiole are specially designed for gas exchange. . organs are involved in the Respiratory system (breathing). Mouth. Trachea. Bronchus. Alveoli. Diaphragm. Rib cage. Lungs. Bronchioles. Oesophagus. Heart. Nose. Stomach. Ciliated epithelial cells. Larynx. PowerPoint. ®. Lecture Slide Presentation by . Robert J. Sullivan. , Marist College. EXCHANGE OF GASES. RESPIRATORY SYSTEM. The human respiratory system allows one to obtain oxygen, eliminate carbon dioxide. . (3) (f-5) (7) (8) Number of search keys. The average number of search keys selected by a searcher per search. Textwords ratio. The percentage of textwords se- lected, that is: the total number of text and Disorders. Gas Exchange. Gas exchange occurs in the alveoli due to the difference in the partial pressures of oxygen and carbon dioxide in the capillary blood and the alveoli.. Since the concentration of oxygen is greater in the alveoli, it diffuses into the capillary blood.. What is gas exchange?. The process all organisms undergo in which they absorb one gas from the environment and release a different one. . In human gas exchange… . -absorb oxygen for cell respiration and release carbon dioxide as waste. Molecules move randomly & rapidly in relation to each other. Net diffusion is from [high] to [low]. Partial pr. of the gas is proportional to [gas]. .  nitrogen  79% 600 mmHg.  Oxygen  21% 160 mmHg. on Alveolar Gas Concentration. 1. 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.. Chapter 22 content not on Wednesday lecture test. Goals:. -Describe the airway divisions that lead air to the alveoli where most gas exchange actually occurs.. -Describe the structure and anatomy of the lower airway anatomy as it applies to health and disease. Brad Smith, PhD. University of Colorado Denver | Anschutz Medical Campus. Departments of Bioengineering and Pediatrics. Background and Vision. Background and Motivation. Acute respiratory distress syndrome (ARDS). Functions of Respiratory System . Provides enormous Surface area for . gas exchange. . between alveoli and circulating blood.. Helps . regulate pH. of body fluids.. Permits vocal . sounds. .. External nares. BACKGROUND-Cellular Respiration. Oxygen . is used by cells. Oxygen is needed to convert glucose to ATP. Carbon dioxide is a waste product. Body cells die if respiration fails. FUNCTIONS. Supplies . body with oxygen and removes carbon dioxide.