Download white blood cells - LAHS | Life Science

pp 940-942
• The average adult has about FIVE liters of blood
inside of their body, which makes up 7-8% of their
body weight.
• There are about one billion red blood cells in two to
three drops of blood.
• For every 600 red blood cells, there are about 40
platelets and one white cell.


Transports nutrients, O2, CO2, & waste
Defends the body against disease

plasma: liquid medium

red blood cells
(erythrocytes):
transport CO2 and O2
gas
For every 600 red blood cells,
there are about 40 platelets and
one white blood cell.

white blood cells
(leukocytes): defend
against disease

platelets: form blood
clots
For every 600 red blood cells, there are
about 40 platelets and one white blood
cell.

Made of 90% water, sugar, salts, amino
acids, vitamins, minerals

Most common in the blood

Made of iron-containing
hemoglobin (O2 binds here)

Lack of nucleus leaves space
to transport materials

Transports O2 to cells in
body and picks up CO2 waste

Average lifespan 100 – 120
days


Many types of white blood cells
Fight pathogens
Partial cells formed in bone marrow
Stimulate blood clotting
Steps to blood clotting


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Platelets congregate at damaged site
2. Clotting factors are released from platelets
3. Factors create chemical reaction that releases
fibrin (long, stick, protein chain)
4. Creates Clot
(net traps red blood cells and hardens to create a
scab)
1.