BIOL 2160 Study Guide - Final Guide: Breathing, Cellular Respiration, Respiratory Tract

• School: LSU
• Department: Biological Sciences
• Course: BIOL 2160
• Professor: S.Crousillac

Document Summary

Internal respiration = cellular respiration, use of o2 and production of co2 within mitochondria: external respiration = exchange of o2 and co2 between atmosphere and body tissues. External respiration: pulmonary ventilation: breathing, gas exchange between lungs and blood via diffusion, transport of o2 and co2 in blood to tissues, gas exchange between blood and tissues via diffusion. Respiratory anatomy: upper airways = air passages in head and neck, pharynx = tube for both air and food, respiratory tract = all air passages from pharynx to lungs. Respiratory tract: conducting zone: moves air from larynx to lungs, humidifies and warms air, (thick walls, respiratory zone: actual site of gas exchange (thin walls) Breathing: thinness of alveolar wall facilitates gas exchange, high density of alveoli and capillaries lots of surface area for gas exchange, consists of inspiration and expiration. Boyle"s law: based on ideal gas law: p=nrt/v.