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Biology Chapter 10

Section 10.1 The Respiratory System

TermDefinition
Aerobic Requires oxygen to live, cellular respiration. EX: Most organisms on Earth are aerobic.
Gas Exchange To make sure that oxygen can enter each cell in the organism, and that carbon dioxide can leave each cell. The basic function of the respiratory system.
The Respiratory System 1.Must be big enough for exchange of oxygen and carbon dioxide to occur at a rate that will meet the organism's metabolic needs. 2.Repiration must take place in a moist environment so that carbon dioxide and oxygen are dissolved.
The Lung An internal respiratory surface connected to the air by internal passageways
Respiratory Surface Surface area available for gas exchange.
What does a lung system consist of 1. One or two lungs with a moist respiratory surface. 2. The ability to bring air in contact with this surface. 3. A circulatory system to carry gases between lungs and the rest of the body.
Pleurisy A condition that occurs when the pleura become inflamed. Flexibility decreases.
Pleura This membrane is flexible, allowing lungs to expand and contract.
Inspiration The act of taking air into the lungs.
Expiration The act of breathing out.
External Respiration Exchange of oxygen and carbon dioxide between the air and blood.
Internal Respiration Exchange of oxygen and carbon dioxide between the blood and cells of the surrounding tissue.
Cellular Respiration A complex series of chemical reactions that take place in the mitochondria of cells.
Alveoli The wall of each sae is 1 cell layer thick. Adjacent to a capillary network. Site of external respiration (oxygen and carbon dioxide exchange). Simple diffusion and facilitated diffusion allow blood to take up oxygen quickly.
Created by: skit.inkina