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CIRCULATION AND THE CIRCULATO (The circulatory system (Blood (Collects…
CIRCULATION AND THE CIRCULATO
The circulatory system
Blood
Collects
oxygen
and transports
nutrients
to the cells
Collects
carbon dioxide
and
waste substances
and takes them to the
respiratory
and
excretory system
to be expelled.
Blood vessels
Tubes
which blood circulaters .3 types
Arteries
Carry
blood
from the
heart to the body
.
Veins
Carry
blood
from the
body to the heart
Capillaries
Are
very thin
that
reach cells
.
Heart
Pumps blood
to the entire body.
Blood
Red liquid
.
Made up of cells that float in a liquid called
plasma
Components:
White blood cells
Defence
cells
Platelets
Stop
blood
Red blood cells
Carry
oxygen
and provide the blood its
red colour
Plasma
Made up of
water
.
Also
carbon dioxide
and
waste substances
The Heart
It is located in the
chest
between the
lungs
Left
Is divided into
2 parts
by the
heart septum
Each half
is divided into
2 cavities
and there are
valves
between these cavities:
Valves
Ventricles
Atrium
Heart septum
THE HEART AND CIRCULATION
The heart uses
movements
to pump the blood
Systoles
Heart
contracts
and sends blood to the
arteries
Diastoles
Heart
relaxes
and blood enters from the
veins
BLOOD CIRCULATION
Heart septum
separates the heart in two halves. This prevent the
oxygen
mixing with the
carbon dioxide
Humans have
double circulation
Systemic
The route of the blood between the
heart
and of the
body
Left
Pulmonary
The route of the blood between the
heart
and
lungs
Right