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TRANSPORT IN LIVING THINGS (Ri Tong) - Coggle Diagram
TRANSPORT IN LIVING THINGS (Ri Tong)
Why is there a need for transporting substances?
Transport in humans
It is known as the circulatory system
It consists of
Heart
Funnel shaped
Hollow
Powerful muscular organ
Pumps blood to all parts of the body
Structures of the heart
Pulmonary artery
Valves
Ensure blood flows in one direction in the heart
Vena Cava (main vein)
Right atrium
Right ventricle
Aorta (main artery)
Pulmonary vein
Left atrium
Left ventricle
Muscular wall
Blood vessels
Arteries
Blood vessels that carry blood away from the heart
No exchange of substance
Characteristics
Thicker muscular wall
High blood pressure
Valves are absent
Smaller lumen
Veins
Blood vessels that carry blood towards the heart
no exchange of substance
Characteristics
Thinner muscular wall
Larger lumen
Lowest blood pressure
Valves are present
Blood capillaries
Thin
Fragile
One-cell thick
allow the exchange of substances, such as
Oxygen
Carbon dioxide
Nutrients
Waste substances
Characteristics
Very narrow lumen
One-cell thick muscular wall
Lower blood pressure
Valves are absent
Blood
It is an important component in the circulatory system
When blood passes through the heart twice
It is called the double circulation
Pulmonary circulation
Blood flowing between the heart and lungs
Systematic circulation
Blood flowing between the heart and the rest of the body
The circulation of blood
Pulmonary artery
Lungs
Pulmonary vein
Left atrium
Left ventricle
Arteries
3 more items...
From the lungs to the left atrium
Carries oxygenated blood
From right ventricle to lungs
Carries deoxygenated blood