Transport in animals 0.0 / 5 ? BiologyHuman, animal and plant physiologyASOCR Created by: Emilymitchell12Created on: 22-03-16 21:15 Why are specialised systems needed? high metabolic demands, need high SA:Vol, transport of hormones, waste needs to be removed 1 of 10 What are features of transport systems? pump (heart), liquid (blood), vessels (veins etc) 2 of 10 Describe open systems? low pressure, direct contact with tissue, few vessels, can't vary flow, 3 of 10 Describe closed systems? no direct contact, high pressure, more vessels, amount of blood flow can be adjusted, 4 of 10 Describe single closed systems? fish, lower demands, lower pressure, once through heart, 2 chambers, 5 of 10 Describe double closed system? mammals, 2 systems - 1 oxygenated 1 deoxygenated, 4 chambers in heart, through hearttwice, 6 of 10 3 components of blood vessels? elastic fibres, smooth muscle, collagen 7 of 10 Describe arteries? carry oxygenated blood (excet pulmonary) elastic to withstand pressure, 8 of 10 What do capillaries do? link arterioles and venules. 9 of 10 What do veins do? Carry blood away from the heart 10 of 10
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