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6373300
Blood
Description
Mind Map on Blood, created by Caramel Kitty on 17/09/2016.
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year 3
Mind Map by
Caramel Kitty
, updated more than 1 year ago
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Created by
Caramel Kitty
almost 8 years ago
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Resource summary
Blood
Plasma
90% water
10% complex of various dissolved substances
soluble proteins
fibrinogen & prothrombin
important for the clotting of blood
antibodies
help fight diseases
dissolved mineral salts
occur as ions in plasma
calcum
sodium
potassium
food substances
glucose
amino acids
fats
vitamins
excretory products
urea
uric acid
creatinine
carbon dioxide
hormones
insulin
amount of soluble proteins, mineral salts & glucose are kept relatively constant
transports various substances & blood cells around the body
Red Blood Cells (Erythrocytes)
contains haemoglobin (pigment)
combines reversibly with oxygen
enables RBC to transport oxygen from lungs to all cells in body
circular, flattened biconcave disc
increase surface to volume ratio
absorb & release oxygen at a faster rate
does not contain nucleus
made in bone marrow
made from iron, folic acid & vitamin B12
lifespan about 3-4 months
destroyed in spleen
haemoglobin released from destroyed RBC is brought to liver & broken down
White Blood Cells (Leucocytes)
can squeeze through capillary walls into spaces among tissue by changing shape
helps keep body healthy by fighting diseases
Lymphocytes
produce antibodies to protect the body from disease-causing microorganisms
produced by lymph glands
matures in lymph nodes
Phagocytes
engulf, ingest & digest foreign particles such as bacteria
Platelets (Thrombocytes)
not true cells
membrane-bound fragments of cytoplasm from certain bone marrow cells
lifespan of about 4 days
fluid tissue
55% plasma
45% blood cells & platelets
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