An Introduction to the Respiratory System

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Breathing • breathing represents life! – first breath of a newborn baby – last gasp of a dying person • all our body processes directly or indirectly require ATP – ATP synthesis requires oxygen and produces carbon dioxide – drives the need to breathe to take in oxygen, and eliminate carbon dioxide • the respiratory system consists of a system of tubes that delivers air to the lung – oxygen diffuses into the blood, and carbon dioxide diffuses out • respiratory and cardiovascular systems work together to deliver oxygen to the tissues and remove carbon dioxide – considered jointly as cardiopulmonary system – disorders of lungs directly effect the heart and vise versa • respiratory system and the urinary system collaborate to regulate the body’s acid base balance
Respiration Respiration has three meanings: ventilation of the lungs (breathing) the exchange of gases between the air and blood, and between blood the tissue fluidthe use of oxygen in cellular metabolism
Page 1: Chapter 22 An Introduction to the R

An Introduction to the Respiratory System

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