The cardiovascular system for demo

The Cardiovascular
System
is a two-way circuit that involves
your heart (cardiac)

The Cardiovascular System
your blood vessels
(vascular)

your blood.

It can be compared to a
railway system. A railway
system consists of a
central station, train cars
and railway tracks.

The cardiovascular
system consists of the
heart, blood and
blood vessels.

The heart is
like the central
station. It is
responsible
for circulation
of the blood.

The blood is like the train
cars, which carries the
cargoes of gases, nutrients,
and other substances in the
body.

The blood
vessels act
like the railway
tracks. They
carry the blood
to the different
parts of the body.

The word circulate
means “to move
about.”
Circulation –
pumping of blood
through the entire
body by the heart.

The Cardiovascular System (cont
• The Heart
– It consists of four chambers.

• The Heart
• The left and right atria are collecting
chambers. They receive the blood and
hold the blood until it can enter the
ventricles.

• The Heart
• The atria are thin-walled while ventricles
are thick walled.

• The Heart
The ventricles are pumping chambers.
They pump the blood out of the heart
and cause the blood to move around
the body

• The Heart
How does the heart pump
blood?
The heart muscles squeeze
together and push out blood from
inside.

• The Heart
–Your heart is sort of like a pump, or
two pumps in one. The right side of
your heart receives blood from the
body and pumps it to the lungs. The
left side of the heart does the exact
opposite: It receives blood from the
lungs and pumps it out to the body.

• The Heart
–The blood enters into the Right
Atrium (RA) and goes to the Right
Ventricle (RV) then exits into the
lungs where it exchanges carbon
dioxide load for oxygen.

• The Heart
–This oxygenated blood goes back
to the heart through the Left Atrium
(LA) then it goes to the Left
Ventricle (LV).

• The Heart
– Blood flows through the heart in one
direction.
– Valves control the blood flow.
– The cardiac conduction system controls
the electrical impulses that cause the heart
to contract.

• The Heart
The heart contains two types of
valves.
The tricuspid valve
separates the right atrium
from the right ventricle, and
the bicuspid valve
separates the left atrium
and the left ventricle

• The Heart
valves.
The tricuspid and
bicuspid valves
ensure the blood
flows from the atria to
the ventricles.

• The Heart
valves.
The other valves are
the semilunar valves.
They open and permit
the entry of blood when
ventricles contract.

• The Heart
valves.
.

• The Semilunar Valves
• The pulmonic valve separates the right
ventricle from the pulmonary
artery leading to the lungs.
• The aortic valve separates the left
ventricle from the aorta, the body's largest
blood vessel.
•

The Cardiovascular System (cont.)
• The Heart (cont.)
– Bicuspid (mitral)
valve.
– Tricuspid valve.
– Pulmonary valve.
– Aortic valve.

• Circulation
–Coronary circulation – the circulation
of blood within the heart.
–Pulmonary circulation – the flow of
blood between the heart and lungs.
–Systemic circulation – the flow of
blood between the heart and the cells
of the body.

The blood vessels
(vascular)

The blood vessels
1.arteries It carries the blood away
from the heart.
2.veins –It carries blood back to
the heart.

The blood vessels
3. The two largest veins are
the superior and inferior vena
cavae.The terms superior and
inferior do not mean that one vein is
better than the other, but that they
are located above (superior) and
below (inferior) the heart.

The blood vessels
superior vena cavae- It carries
deoxygenated blood from the upper
half of the body to the heart's
right atrium.

The blood vessels
De-oxygenated blood means
most of the oxygen has been
removed by tissues and the blood
is darker.

The blood vessels
The inferior vena cava is a vein
that carries blood from the lower
body to the heart. This vein carries
de-oxygenated blood.

The blood vessels
A network of
tiny capillaries connects the
arteries and veins.

The blood vessels
Even though they're tiny, the
capillaries are one of the most
important parts of the circulatory
system because it is through them that
nutrients and oxygen are delivered to
the cells.

The blood vessels
In addition, waste products such as
carbon dioxide are also removed by
the capillaries.

The blood vessels

• Blood
– Complex mixture
of cells, water,
and various
proteins and
sugars.
– Fifty-five percent
is plasma (liquid).
– Forty-five percent
is solid.

• Blood Types
–Common blood types are O, A, B, and
AB.
–Rh-factor is a type of antigen that
causes the body to produce
antibodies.
• Rh+ means the Rh factor is present.
• Rh– means the Rh factor is not
present.

• Diseases and Disorders
–Hypertension.
–Stroke.
–Arteriosclerosis.
–Aneurysm.
–Coronary artery disease (CAD).
–Heart attack.
–Congestive heart failure (CHF).
–Anemia, hemophilia, and leukemia.

What the Heart & Circulatory
System Do?
• The circulatory system works closely with
other systems in our bodies. It supplies
oxygen and nutrients to our bodies by
working with the respiratory system. At the
same time, the circulatory system helps
carry waste and carbon dioxide out of the
body.

http://kidshealth.org/teen/your_body/body_basics/heart

Students are put in small groups of three or
four and are asked to make a life-size drawing
of the circulatory system. They trace a
member of their group and use their book or
the internet to draw the circulatory system,
label the necessary parts, and color
(unoxygenated blood blue, oxygenated blood
red). They must have a title, group members
names, and label the following: heart, lungs,
vein, artery, brain, capillaries, right ventricle,
left ventricle, right atrium, left atrium, and
valves.
Group Project

The cardiovascular system for demo

The cardiovascular system for demo

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