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Summary Human Biology - H7

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This summary Human Biology includes books, slides and lecture notes. Titles are clearly marked in color, and expressed figures are all included. The text is written in English. Good luck, it worked for me ;-)!

Institution
Katholieke Universiteit Leuven (KU Leuven)
Course
Human biology








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Institution
Katholieke Universiteit Leuven (KU Leuven)
Study
Psychologie
Course
Human biology
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Uploaded on
July 10, 2016
Number of pages
7
Written in
2015/2016
Type
Summary

Subjects

  • human biology

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Chapter 7 : BLOOD
The circulary system = HEART // BLOOD VESSELS // BLOOD => Maintains homeostasis !




1. The components and functions of blood

Blood = Specialized CONNECTIVE TISSUE with 3 crucial tasks : TRANSPORTATION / REGULATION / DEFENSE
 M~5-6L – W~4-5L (= 8% of body weight)
 Plasma (55%) = Liquid component
 Formed elements (45%) = cellular components (RBCs, WBCs, Platelets)




PLASMA (55%) =vWater & dissolved solutes
Plasma : transport medium for BCs and platelets : 90% water – rest = solutes,mainly PROTEINS :
 Albumins:
o keep water balance between blood & interstitial fluid
o Manufactured in the liver = also binds to & transports biluribin & drugs
 Globulins :
o Tansports various substances
o Beta-Globulins : binds to lipid molecules (eg. cholesterol) => forms a “LIPOPROTEIN” eg. LDL (Low-density
lipoproteins) (=bad cholesterols) and HDLs (=good choleterols).
o Gamma-Globulins : help protect against illness & infections
 Clotting proteins :
o minimize bloodloss & help restore homeostasis after injury
Also contains ELECTROLYTES (eg Ca & Ka to controll cell function/volumes), HORMONES (chemical messengers from
endocrine system), NUTRIENTS, WASTE products (eg urea, carbon dioxide), GASES (eg oxygen).
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