4. artery
Carries Contains
consist blood blood under Lumen
of 3 away from high
layer the heart pressure
Inner Have small
Middle Layer External Layer
Layer passageways
for blood to
Smooth, flow through
allows Mostly composed Consists of
blood that of muscle tissue flexible
comes connective
through it tissue
to flow
more freely
6. Valves n Thin walls
Prevents back
flow of blood
Transports
waste-rich
Causes blood
contractions of
the beating
heart
Carries blood to
the heart
Creating the
correct blood
flow into the
arteries Contains blood
under low
pressure
7.
8. capillaries
Found in the muscles and
lungs
Has only 1
layer
Gas exchange occurs
here
Microscopic
1 cell thick
Very low blood
pressure
9. Function of blood
Carries oxygen from the lungs nutrients from the
digestive tract to the body’s cells
Carries nutrients from the digestive tract to the
body’s cells
Also carries away carbon dioxide and all of the waste products that the
body does not need
Carries hormones to the body’s cells
Helps keep your body at the right
temperature
Sends antibodies to fight infection
Contains clotting factors to help the blood to clot and the body’s
tissues to heal
10. Relate the components of blood to their
functions:
-Plasma -Platelets
Fluid part of blood
Clump together to
form clots
Carries carbon dioxide,
hormones and waste
Protect the body by
Yellowish liquid that is 90% water stopping bleeding
Contains salts, glucose and proteins that carry
important nutrients to the body’s cells and
strengthen the body’s immune system so it can fight Clotting stops blood from
off infection.
flowing out of the body when a
vein or artery is broken.
11. Relate the components of blood to their functions:
Red blood
White blood cells
cells
Contains
haemoglobin An important part of
which carries the immune system,
they produce
oxygen antibodies and destroy
harmful
Made in the bone microorganisms
marrow. The more
you train the more Made in the
red blood cells are
made. bone marrow
each have a life Most healthy adults
span of about 120 have about 700 times
days. as many red blood cells
as white ones
