Blood basic Flashcards
(34 cards)
PLASMA
Is the yellow liquid portion of the blood
WHAT DOES PLAMSA CONTAIN?
water, salt, nutrients , gases, clotting factos , antibodies, toxins , chemicals, drug, etc
Consists of cell suspended in …..
PLASMA
WHERE MOST BLOOD CELL PRODUCE IN?
most blood cellls are produced in the bone marrows
How much blood is in a humans body?
AVERAGE OF 5 LITERS (10 unit) A unit of blood/plasma is * 525 ml (1 pint)
How much red blood cell are ther in the human body?
40-45% blood
WHAT IS OXYGEN TRANSPORT?
Struture of red blood cell suits its main fuction of oxygen transport.
WHAT RED BLOOD CELLS
they are filled with protein( hemoglobin), abbreviated Hb, which picks up and transport oxygen.
Role of the RED BLOOD CELLS
pred blood cell pass through the lungs and pick up oxgen; oxgen binds to iron atoms in the Hb molecules
CAN ALSO CARRY C02 BACK TO LUNGS
What is the function of White blood cells?
The defense and general housekeeping.
Search and destory infected,inflammed or damaged tissues.
What is the amount of white blood cell in the body
small fraction of the whole blood
what is the immue system prgrammed to do
they are prgrammed to destroy any cell that does not display the corrrect idenfity markers.
what are antigens
they are molcule tha t are recogized as forgein by the immue system and trigger immue repsonse
UNLIKE RBC - THEY HAVE A NUCLUES ( DNA FINGERPRINTING )
how long does platelet last
5-9 days
what does platelet do
bits of cytoplams pinched off from large cells in the bone .
does platelet relate to blood clotting
platelet functio in blood clotting. Clotting proteins are always present in out blood but are not active unless there is an injury
what happen when injury occurs
clotting protein are activated and form long sticky thread that trap the platelets and form a clot
how long does clotting last
Normal clotting time is from 3 -15 mintues, but clotting time is extremely indivdual and can be affected by certain diasease suach as hemophila and various medication including blood thinners.
how does investigatoe use blood clotting
investigators use the state of blood clotting as a rough guide to estimate how much time has passed since the blood has shed
what is the blood clotting timeline
- shiny gelatinous pool bleeding = less than a hour
- blood is separated into clot = severl hour had passed.
how can you tell whether if the blood is clotting
blood first begins to clot it forms a dark shiny jelly like mass, with time the clot begins to contract and separate from the yellowish serum.
what are the timeline of a blood pool
1) coagulation ( is the blood from dark to light red) t = 0 hour
2) gelatinous ( form a rim ) 1.5 hour
3) rimdessication ( rim is dry and blood is turning black ) . (t=4 hr)
4) center dessication (pool of blood is fully dried and reach center) t=9hr
what is the blood droplet timeline
fresh drop = even drop
10 min = drying and form a ring around the outside
30 min = center of drop dries
60 - 120 min- ring is darken
what is blood typing
si where blood cell have antigen that give us the blood types. these are protiens that identify that blood cell as “self” ( the immune system will attack any cell seen as non-self )
