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AP Focus 16

Animal Physiology: Respiration and Circulation

QuestionAnswer
Gas movement Respiration
For organisms that have a large proportion of surface area, ex. flatworms or cnidarians Simple diffusion
Structures with large amounts of surface area that use countercurrent exchange Gills
Movement of blood opposite of water flow to pick up maximum 02 and release the most CO2 ex. Mollusks and fish Countercurrent exchange
A tube system connected to the surface by spiracles Tracheae
Openings that deliver and remove gasses from tissues, ex. insects Spiracles
Internal sacs with large surface area to aid in gas exchange, ex. mammals Lungs
Flow of air nose-pharynx-larynx-trachea(protected by epiglottis)-bronchi-brochioles-alveolus (sing.)
Moist and thin walled where gas exchange occurs Alveoli
Oxygen and nutrient containing fluid is pumped into the hemocoel Hemolymph
Cavity or sinus where body tissues receive hemolymph Hemocoel
Holes back into a heart that will pump the hemolymph Ostia
Flow of blood through a closed circulatory system Heart-arteries-arterioles-capillaries-venules-veins-heart
Created by: AliRutherford
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