8.1 the transport system

Transport in humans

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Artificial Blood ??He lost a

lot of

blood !

Artificial Blood ??He needs an

transfusion !!

How can the doctor get the

blood he needed?

Artificial Blood ??

Donated blood..Or..

Artificial Blood ??

Artificial blood?!

It can replace blood and save

lives !!!

Artificial Blood ??

Try to think these questions!

What are the function of blood in the body ? 1What is hemoglobin? What is their role in the body?2Can artificial blood replace donated blood? Why? 3

The transport system

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8.1 The transport systemIn our city:

Transport system to carry goods and people around

8.1 The transport system

How are substances moved in organisms?

In very small organisms:

moves substance by diffusion

Amoeba

O2

nutrientswaste

In multicellular organisms:

substances need to move long distance

• by a Transport system

human transport system

lymphatic system

(淋巴系統 )

circulatory system

(循環系統 )

Human circulatory system

blood• carries nutrients

and waste

Human circulatory system

blood vessels (血管 )

• distributed throughout the body

Human circulatory system

heart• as a pump to

drive blood

1 Humans are organisms. A is needed to carry substances from one place to another over long distances within the body.

multicellulartransport system

Self Quiz!

2 The human circulatory system consists of:

blood

blood vessels

heart

Self Quiz!