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A Level Biology - Exchange Surface and Breathing

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slidingtacos
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Last updated: February 8, 2018
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First submittedFebruary 8, 2018
Times taken59
Average score36.0%
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Defintion
Keyword
Surface area divided by volume
Surface area to volume ratio
Tiny folds of the lung epithelium to increase the surface area
Alveoli
Smaller airways leading into the lungs
Bronchi
A layer of muscle beneath the lungs
Diaphragm
Mucles between the ribs
Intercostal mucles
Main airway leading from the back of the mouth to the lungs
Trachea
Refreshing of the air in the lungs
Ventilation
A form of connective tissue
Cartilage
Layer of cells that have many hair-like extensions
Ciliated epithelium
Protein fibres that can deform and then recoil to their original size
Elastic fibres
Cells that secrete mucas
Goblet cells
Involuntary muscle that contracts without the need for conscious thought
Smooth muscle
The number of breaths per minute
Breathing rate
The volume of oxygen absorbed by the lungs in one minute
Oxygen uptake
The volume of air inhaled or exhaled in one breath, usually measured at rest
Tidal volume
Device that can measure the movement of air in and out of lungs
Spirometer
The greatest volume of air that can be expelled from the lungs after taking the deepest possible breath
Vital capacity
The mouth
Buccal cavity
Where two fluids flow in opposite directions
Countercurrent flow
Slender branches of tissue that make up the gill
Filaments
Folds of the filament to increase surface area
Lamallae
Bony flap that covers and protects the gills
Operculum
Extrernal opening or pore that allows air in or out of the trachea
Spiracle
Fluid found at the ends of the tracheoles
Tracheal fluid
System of air-filled tubes in insects
Tracheal system
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