Circulation & Gas Exchange

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Presentation transcript:

Circulation & Gas Exchange Animals & Humans Circulation & Gas Exchange

Circulation - Animals Movement of nutrients and waste products Open systems Hearts or heart-like structures Blood vessels Sinuses

Closed systems Blood vessels Heart or heartlike structure Blood remains in vessels all the time Pumps blood more quickly

Hearts Atrium Ventricle

Single loop or double loop system

Circulation - Humans Closed system 4 chambered heart Double loop system Arteries, veins, and capillaries Blood – red blood cells, white blood cells, platelets Why do we need it?

Gas Exchange - Animals Taking in oxygen and eliminating carbon dioxide Diffusion

Gills

Terrestrial animals: Skin Mantle cavities Book lungs Tracheal tubes

Gas Exchange - Humans Mouth, nose Trachea Bronchi Lungs Diaphragm Alveoli

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