exchange surfaces and breathing 0.0 / 5 ? BiologyHuman, animal and plant physiologyA2/A-levelOCR Created by: emilyamkerrCreated on: 17-04-19 13:11 tiny folds of the lung epithelium to increase the surface area alveoli 1 of 23 smaller airways leading into the lungs bronchioles 2 of 23 a layer of muscle beneath the lungs diaphragm 3 of 23 muscles between the ribs. contraction of the external intercostal muscles raises the ribcage intercostal muscles 4 of 23 the main airway leading from the back of the mouth to the lungs trachea 5 of 23 the refreshing of the air in the lungs, so that there is a higher oxygen concentration than in the blood and a lower carbon dioxide concentration ventilation 6 of 23 a form of connective tissue cartilage 7 of 23 a layer of cells that have many hair like extensions called cilia ciliated epithelium 8 of 23 protein fibres that can deform and then recoil to their original size elastic fibres 9 of 23 cells that secret mucus goblet cells 10 of 23 involuntary muscle that contracts without the need for conscious thought smooth muscle 11 of 23 the number of breaths per minute breathing rate 12 of 23 the volume of oxygen absorbed by the lungs in one minute oxygen uptake 13 of 23 the volume of air inhaled or exhale in one breath, usually measured at rest tidal volume 14 of 23 a device that can measure the movement of air into and out of the lungs the greatest volume of air that can be expelled from the lungs after taking the deepest possible breath 15 of 23 the mouth buccal cavity 16 of 23 where two fluids flow in opposite directions countercurrent flow 17 of 23 slender branches of tissue that make up the gill. they are are often called primary lamellae filaments 18 of 23 sometimes called secondary lamellae. folds of the filament to increase surface area. they are also called gill plates lamellae 19 of 23 a bony flap that covers and protects the gills operculum 20 of 23 an external opening or pore that allows air in or out of the tracheae spiracle 21 of 23 the fluid found at the end of the tracheoles in the tracheal system tracheal fluid 22 of 23 a system of air filled tubes in insects tracheal system 23 of 23
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