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Cyfarthfa B2 lungs

CyfarthfaB2 lungs

Scientific name for windpipe Trachea
Tubes that carry air into right or left lung Bronchi
Narrow tubes carrying air to alveoli Bronchioles
Tiny air sacs where gas exchange takes place Alveoli
Bones that protect the lungs Ribs
Muscles in between ribs Intercostal muscles
Large muscle underneath the lungs Diaphragm
Membranes between the lungs and rib cage Pleural membranes
Reason for the folded shape of alveoli Large surface area
Reason for moist lining of alveoli Gases diffuse more quickly when dissolved
Adaptation of alveoli to give a short diffusion distance Walls only one cell thick
How is a maximum concentration gradient maintained between alveoli and blood? Constant movement of air and blood
What happens to intercostal muscles during inhalation? Contract
Movement of ribcage during inhalation? Up and out
Volume of thorax during inhalation Increases
Pressure inside thorax during inhalation? Decreases
What happens to intercostal muscles during expiration? Relax
Movement of ribcage during exhalation? Down and in
Volume of thorax during exhalation Decreases
Pressure inside thorax during expiration Increases
Position of diaphragm during inspiration Lies flat
Position of diaphragm during expiration Dome shaped
Structures represented by the glass y tube in the bell jar model? Trachea and bronchi
Structures represented by balloons in bell jar model? Lungs
Cells that produce mucus in the airways Goblet cells
Cells with structures on their surface that move mucus out of the airways Ciliated epithelial cells
Limitation of bell jar model Doesn't show movement of ribcage
Addictive chemical in cigarette smoke Nicotine
Condition where the elastic tissue of alveoli is damaged so they lose their special shape Emphysema
Created by: MissRParry