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2.59 Describe the composition of the blood: red blood cells, white blood cells, platelets and plasma.
2.60 Understand the role of plasma in the transport of carbon dioxide, digested food, urea, hormones and heat energy.
2.61 Understand how adaptations of red blood cells make them suitable for the transport of oxygen, including shape, the absence of a nucleus and the presence of haemoglobin.
2.62 Understand how the immune system responds to disease using white blood cells, illustrated by phagocytes ingesting pathogens and lymphocytes releasing antibodies specific to the pathogen.
2.63B Understand how vaccination results in the manufacture of memory cells, which enable future antibody production to the pathogen to occur sooner, faster and in greater quantity.
2.64B Understand how platelets are involved in blood clotting, which prevents blood loss and the entry of micro-organisms.
26 июл 2024
