THE HUMAN BLOOD

DONE BY:

NUR FAZNINA BINTI MOHAMAD RAZIF

ADIBA YUSRA BINTI MOHD YUSOF

BLOOD COMPONENTS AND ITS FUNCTIONS

Plasma

• It helps transport nutrients to tissues

• Removes waste products from tissues

• Distribute heat energy from the liver

and muscles to all the other parts of the body.

• It also distribute hormones, enzymes,

antibodies and other proteins. White blood cells (leucocytes)• Some produce antibodies to render bacteria

inactive and some ingest bacteria.

Red blood cells (erythrocytes)

• Transports oxygen from the lungs to all the parts of the body.

Platelets (thrombocytes)• It releases blood clotting factors

when a blood vessel breaks.

BLOOD GROUPTHE RECIPIENT AND THE DONOR BLOOD GROUPS

Group Can donate to Can receive from

A A and AB A and O

B B and AB B and O

AB AB All groups

O All groups O

THE IMPORTANCE OF DONATING BLOOD

• By donating blood, one could save the lives of others

• Blood may be needed for treatment of accident cases, cancer victims, haemophiliacs, gastrointestinal bleeding, and in surgery and childbirth where a great loss of blood occur.

• The donated blood can be used either as unfiltered blood for one patient, or separated into components to help several patients.

Components Main uses

Plasma Great loss of blood in surgery and childbirth

Red blood cells Anaemia

Platelets Bone marrow failure, leukaemia

Blood proteins Burns

HANDLING AND STORING BLOOD

A donor can give 400cm3 of blood from a vein.

Frozen plasma can be kept for up to one year. The frozen plasma and the red blood cells should be thawed in a

water bath at a temperature not exceeding 38 degrees Celcius.

Blood must be collected under aseptic conditions into a sterilized container

containing anticoagulant solution which prevents clotting.

Screening tests are performed for evidence of donor infection with hepatitis, AIDS and other sexually

transmitted diseases.

The blood can be stored at 5 degrees Celsius for 10

days, or longer if glucose is added.

Red blood cells can be stored under refrigeration for 42 days, or they can be frozen for up to 10 years. Platelets can be stored at a room temperature

for a maximum of five days.

THANK YOU