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EXPLORING THE CIRCULATORY SYSTEM

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The circulatory system transports many items by blood and blood vessels. ... functions of the circulatory system is to: ... as a pump for the circulatory system. ... – PowerPoint PPT presentation

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Title: EXPLORING THE CIRCULATORY SYSTEM


1
EXPLORING THE CIRCULATORY SYSTEM
2
What is the circulatory system?
3
The circulatory system is a complex system in the
body.
  • Pulmonary System
  • Coronary System
  • Systemic System

4
The circulatory system consists of the heart and
blood vessels.
5
One of the major functions of the circulatory
system is transportation.
Hey, I am supposed to be fighting an infection
here! Send some white blood cells right away!
6
The circulatory system transports many items by
blood and blood vessels.
CautionOxygen Transport
7
One of the major functions of the circulatory
system is to
  • Transport oxygen to cells in the body.
  • To transport waste products such as carbon
    dioxide out of the cells in the body.

8
Many substances in the body are transported by
the circulatory system.
Oxygen enters the cell by the blood vessels.

Carbon dioxide leaves the cell and
is transported away by the blood vessels.
9
The heart is a major organ of the circulatory
system.
  • What is the history of the heart?
  • Check out the structure of the heart.
  • Find out about blood.

10
The heart is about the size of your hand when you
make a fist.
  • It is a strong muscular organ.
  • The muscle that makes up your heart is called
    cardiac muscle.

Approximate size of the human heart.
11
The heart acts as a pump for the circulatory
system.
12
Did you know you have electricity in your heart?
13
The electrical system in your heart stimulates
your heart to beat.
14
The force of the hearts pumping action keeps the
blood circulating throughout the body.
15
The heart has its own blood supply.
  • .

The coronary arteries provide a blood supply to
the heart.
16
There are different parts of the heart.
  • View the heart and its anatomical parts.
  • http//www.gen.umn.edu/faculty_staff/jensen/1135/w
    ebanatomy/wa_cvs/wa_heart_internal1.html
  • Trace the flow of blood through the heart.

17
Another part of the circulatory system is the
blood vessels.
18
The blood vessels act to carry the blood
throughout the body.
19
Major blood vessels in the circulatory system are
the
  • Arteries
  • Veins
  • Capillaries

20
Arteries are blood vessels that carry blood from
the heart to the rest of the body.

The blood contained in arteries is rich in
oxygen.
21
Arteries transport oxygen rich blood to the cells
of the body.
  • Remember, transportation of oxygen to the cells
    is one of the vital functions of the circulatory
    system.

CautionOxygen Transport
22
Small arteries that branch off from a major
artery are called arterioles.
Arterioles also carry oxygen rich blood and are
connected to the capillaries.
23
ARTERIES
ARTERIOLES
CAPILLARIES
24
Capillaries are blood vessels that allow
the exchange of oxygen and carbon dioxide to
occur.
25
Capillary vessels allow contact of blood with
body cells.
26
  • The capillaries have a thin wall.
  • This thin wall allows substances to pass into and
    out of the capillary.
  • The capillary wall allows the oxygen and
    nutrients to pass from the capillary to the body
    cells.
  • A reverse process also occurs.
  • Carbon dioxide and other waste products exit the
    capillary and are carried away by the venous
    system.

27
Capillaries connect arteries to veins in the
circulatory system.
We are all connected.
28
Blood Vessel Connections
Artery
Blood from heart (Oxygenated)
Arteriole
Capillary
Veinule
(Unoxygenated) Blood returning to heart
Vein
29
Veins are blood vessels that carry unoxygenated
blood in the body.
NO OXYGEN
30
Small blood vessels branch off of veins and are
called venules.
31
Venules are connected to the capillaries.
  • Capillaries

Venules
Veins
Blood travels back to the heart
32
Blood Vessel Connections
Artery
Blood from heart (Oxygenated)
Arteriole
Capillary
Veinule
(Unoxygenated) Blood returning to heart
Vein
33
Review the major points
  • The circulatory system is complex.
  • Its major function is transportation.
  • The heart is the main organ of the circulatory
    system.
  • The heart beat is stimulated by an electrical
    charge.
  • The pumping action of the heart directs blood
    flow throughout the body.
  • There are 3 types of blood vessels.
  • One of the major functions of the blood vessels
    is to carry oxygen to the cells and remove carbon
    dioxide.

34
Now its time for you to answer some questions!
  • GO BACK TO TITLE PAGE
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