Health and social care
what happens if a small sample of blood is spun very fast in a machine called a centrifuge?
red colour dissapers and a clear pale yellow liquid is seen.red colur appers as a pellet at the bottom
What is plasma?
Yellow liquid that makes 55% of the blood.Mostly is water but has subctances disolved in it including protiens,glucose,amino acids,various salts,carbon dioxide and other posionous wastes such as urea.
What is a red blood cell called?
erythocytes
what is a white blood cell called?
leucocytes
what is the functions of blood?
transport
temperature regulation
exchange of materials in body tissues
preventing infections
blood clotting
What are blood protiens called?
Lipoprotiens
What are the two forms of lipoprotien?
High density lipoprotien (HDL)
Low density lipoprotien(LDL)
What does LDL carry out?
deposit fat and cholestoral in the walls of arteries (bad cholestoral)
What does HDL carry out ?
prevent or even reverse these harmful deposits (good cholestoral)
What gases does the blood transport?
oxygen and carbon dioxide between the tissues and lungs
What protien do red blood cells contain?
iron containing protien called haemoglobin
Why do erythocytes have no cell nucleus?
to increase the space for carrying the maximum amount of heamoglobin
Why do erythocytes have a special disc shape?
help the exchange of oxygen
How does blood help with temperature regulation?
heat is genrated in all our cells but especially in tissues such as mucles.blood removes this heat and circualtes it around the body