tetest 2 real Flashcards
human body
volume of blood
4-6 litres
what to do to separate blood’s components
centrifugation
steps of centrifugation
- fresh blood in a tube + anticoagulant
- put in centrifuge (500rpm)
- result is separation between plasma, white blood and red blood cells
what does the blood consist of after the centrifuge
plasma 55%
white blood cells <1%
red blood cells 45%
plasma composition
- water
- proteins
- nutrients
- hormones
- respiratory gases
- waste products
plasma function
distribution of heat maintenance of ph
erythrocytes
-red blood cells
-7 micro meters dia.
-2 and 1
rbc
-round
-biconcave disc
-number of cells per ml 5 10*9
-** 3 months lifetime **
-transport of oxygen
-produced by cells in the bone marrow of certain bones
leucocytes
-monocycle
-lymphocytes
-granulocytes
too much salt
high blood pressure
-can cause water to be drawn into blood and blood pressure to rise
-this will damage delicate blood vessels including those in the brain
monocycle
-kidney shaped nucleus
-17ym
-immunity
-spherical shape
lymphocytes
-round spherical nucleus
-spherical shape
-8 10*6
-immunity
granulocytes
-multi lobed nucleus
-13ym
-spherical shape
thrombocytes
-platelets
-3ym
-cell fragments
-various shapes
-no nucleus
-2.5 10*8
- last 5-10 days
-involved in blood clotting
Ingestion
Nutrition begin when food and drink are taken into the body through the mouth
absorption
Small digested food molecules and ions cross the wall of the intestine into the bloodstream or lymph
assimilation
Digested food is moved into the cells of the body where they become part of the cells and re used for energy, growth and repair.
