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938277
Circulatory system
Descrição
Mind map on circulatory system (otherwise known as the cardiovascular system).
Sem etiquetas
biology
ks3/4
Mapa Mental por
RNisbet
, atualizado more than 1 year ago
Mais
Menos
Criado por
RNisbet
aproximadamente 10 anos atrás
67
2
0
Resumo de Recurso
Circulatory system
Pump is the heart
Blood vessels
Veins
Thinner walls than arteries
Carry low pressure blood
Arteries
Thick muscular walls to cope with high pressure
Carry blood away from heart
Capillaries
Permeable walls
Transfer materials from bloodstream to tissues
Tiny
Red blood cells
Tiny to fit through small capillaries
Contain haemoglobin
Haemoglobin produces oxyhaemoglobin in oxygen rich environments
Haemoglobin are made from iron
That's why we need iron
Flattened-disc shape
Gives large surface area : volume ratio
Have no nucleus
White blood cells
Lymphocytes
Produce antibodies
Large nucleus
Phagocytes
Engulf pathogens by phagocytosis
Job is to engulf pathogens
Irregular shape
Can change shape easily
Repel pathogens
Plasma
Carries dissolved soluble materials
Amino acids
Urea
Tissue fluid
Antibodies
Straw coloured
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