the cardiovascular system for demo
Post on 07-May-2015
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The Cardiovascular System
is a two-way circuit that involves
your heart (cardiac)
The Cardiovascular System
is a two-way circuit that involves your
blood vessels (vascular)
The Cardiovascular System
is a two-way circuit that involves your blood.
The Cardiovascular System
It can be compared to a railway system. A
railway system consists of a central
station, train cars and railway tracks.
The Cardiovascular System
The cardiovascular system consists of the heart, blood
and blood vessels.
The Cardiovascular System
The heart is like the central
station. It is responsible for circulation of
the blood.
The Cardiovascular System
The blood is like the train cars, which carries the cargoes of gases, nutrients,
and other substances in the body.
The Cardiovascular System
The blood vessels act
like the railway tracks. They
carry the blood to the different
parts of the body.
The Cardiovascular SystemThe 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 Cardiovascular System (cont
• 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 Cardiovascular System (cont
• The Heart
• The atria are thin-walled while ventricles are thick walled.
The Cardiovascular System (cont
• 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 Cardiovascular System (cont
• The Heart
How does the heart pump blood?
The heart muscles squeeze together and push out blood from
inside.
The Cardiovascular System (cont
• 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 Cardiovascular System (cont
• 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 Cardiovascular System (cont
• The Heart
–This oxygenated blood goes back to the heart through the Left Atrium
(LA) then it goes to the Left Ventricle (LV).
The Cardiovascular System (cont
• 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 Cardiovascular System (cont
• 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 Cardiovascular System (cont
• The Heart
The heart contains two types of valves.
The tricuspid and bicuspid valves ensure the blood flows from the atria to the ventricles.
The Cardiovascular System (cont
• The Heart
The heart contains two types of valves.
The other valves are the semilunar valves. They open and permit the entry of blood when ventricles contract.
The Cardiovascular System (cont
• The Heart
The heart contains two types of valves.
.
The Cardiovascular System (cont
• 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.
The Cardiovascular System (cont.)
• 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 Cardiovascular System
The blood vessels (vascular)
The Cardiovascular System
The blood vessels1.arteries It carries the blood away from the heart.
2.veins –It carries blood back to the heart.
The Cardiovascular SystemThe 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 Cardiovascular SystemThe blood vessels superior vena cavae- It carries deoxygenated blood from the upper half of the body to the heart'sright atrium.
The Cardiovascular SystemThe blood vessels De-oxygenated blood means most of the oxygen has been removed by tissues and the blood is darker.
The Cardiovascular SystemThe 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 Cardiovascular SystemThe blood vessels
A network of tiny capillaries connects the
arteries and veins.
The Cardiovascular SystemThe 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 Cardiovascular SystemThe blood vessels In addition, waste products such as carbon dioxide are also removed by the capillaries.
The Cardiovascular SystemThe blood vessels
The Cardiovascular SystemThe blood vessels
The Cardiovascular System (cont.)
• Blood– Complex mixture
of cells, water, and various proteins and sugars.
– Fifty-five percent is plasma (liquid).
– Forty-five percent is solid.
The Cardiovascular System (cont.)
• 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.
The Cardiovascular System (cont.)
• 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.html#
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
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