Mass Transport in Animals (AQA A-Level Biology): Flashcards
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Mass transport definition
Mass transport definition
Bulk movement of substances over long distances via vessels
Transport medium in animals
Transport medium in animals
Blood - carries gases, nutrients, hormones, waste
Three types of blood vessels
Three types of blood vessels
Arteries (from heart), veins (to heart), capillaries (exchange)
Heart's role in mass transport
Heart's role in mass transport
Muscular pump creating pressure gradient for blood flow
Double circulatory system advantage
Double circulatory system advantage
Blood fully oxygenated before reaching body tissues
Pulmonary circulation
Pulmonary circulation
Blood flow between heart and lungs for gas exchange
Systemic circulation
Systemic circulation
Blood flow between heart and body tissues - delivers nutrients, removes waste
Mass transport vs diffusion: distance
Mass transport vs diffusion: distance
Mass transport works over long distances; diffusion only short
Why large organisms need mass transport
Why large organisms need mass transport
Small SA:V ratio - distance too great for diffusion alone
Xylem function in plants
Xylem function in plants
Transports water and minerals from roots to leaves