Презентация на тему Circulatory System

dissolved
substances to and from

The Heart has the job of pumping these things around
the body.

The Heart pumps blood and substances around the
body in tubes called blood vessels.

The Heart and blood vessels together make up the
Circulatory System.

What is the circulatory system?

vein
Left
Right

How does this system work?
Circulatory System

This means it has two parts.
the right side

the left side of the system
deals with oxygenated blood.

from the heart.
This is a vein. It brings blood

Coronary arteries, the hearts own blood supply

The heart has four chambers

2 atria

2 ventricles

now lets look inside the heart

to Head and Body
Artery to Lungs
Vein from Head and

valve

itself.
STEP THREE

through blood vessels
There are 3 types of blood vessels
a.

b. VEIN

c. CAPILLARY

(urea)
hormones
oxygen
BLOOD

to hold oxygen and carry it to cells that

can change shape to an amazing extent, without breaking.

a biconcave disc that is round and flat without a nucleus

all contain a big nucleus.
the two main ones

some lymphocytes fight disease by making antibodies.
other lymphocytes make antitoxins to break down poisons.

macrophages ‘eat’ and digest micro-organisms .

cells.
Platelets produce tiny fibrinogen fibres to form a net.