the circulatory system
DESCRIPTION
The Circulatory System. A. Transportation system of the body. B. Carries oxygen and nutrients. C. Also carries substances called hormones, which control body processes D .Antibodies to fight invading germs. E. Gets rid of waste materials (CO2). Function. - PowerPoint PPT PresentationTRANSCRIPT
The Circulatory SystemThe Circulatory System
FunctionFunctionA. Transportation system of the body.
B. Carries oxygen and nutrients. C. Also carries substances called
hormones, which control body processesD .Antibodies to fight invading germs. E. Gets rid of waste materials (CO2).
The heart, the lungs, and The heart, the lungs, and the blood vessels work the blood vessels work together to form the together to form the
circlecircle part of the part of the circulatory system. circulatory system.
3 Kinds of Circulation:3 Kinds of Circulation:
Systemic circulationCoronary circulationPulmonary circulation
1. Systemic Circulation1. Systemic Circulation
The largest part of the circulatory system in which oxygen-rich blood flows to all
organs and body tissues, except the heart, and lungs.
2. Coronary Circulation2. Coronary Circulation
Movement of blood through the tissues of the heart (cardiac muscle only).
3. Pulmonary Circulation3. Pulmonary Circulation
Movement of blood from the heart, to the lungs, and back to the heart again
http://www.youtube.com/watch?v=Rj_qD0SEGGk
Parts of the Circulatory Parts of the Circulatory SystemSystem
Divided into three major parts:◦1.The Heart ◦2.The Blood ◦3.The Blood Vessels (arteries & veins)
The HeartThe HeartA.Size of your fist B. Made of specialized striated cells called
cardiac muscle. C. Located in the left center of the chest
and protected by the sternum.D. Divided into 4 chambers
The HeartThe Heart
1. Atria (atrium): chambers in the top of the heart which receive blood from other areas of the body
2. Ventricles bottom parts of the heart, pump blood to different parts of the body
3. Pumps about 4-5 liters of blood per minute about 9,000 liters a day
4. It beats between 60-160 beats per minute
Blood Vessels:Blood Vessels:Hollow tubes that circulate your blood
Three Kinds of Blood Vessels Three Kinds of Blood Vessels ArteriesVeinsCapillaries
A. ArteriesA. Arteries1. Carry blood AWAY from the heart2. Very muscular3. Main artery called the aorta is the
largest arteryAorta divides and branches into many
smaller arteries 4. The only artery that does not carry
oxygenated blood is Pulmonary artery.
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Have strong, muscular walls
The inner layer is very smooth so that the blood can flow easily
B. CapillariesB. Capillaries1. Connect arteries & veins2. Are the smallest of the blood vessels3. Very thin only one cell thick4. Found all over body5. Where exchange of oxygen, waste and
other transfers occur between the blood vessels and the tissue.
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Oxygen & Nutrients dropped off to tissue while waste & CO2 picked up and taken into blood then move into viens
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C. VeinsC. Veins1. Carry blood back to the heart2. Only vein that does not carry un-
oxygenated blood is the pulmonary vein3. Walls are thinners then arteries4. Have small valves to prevent blood
from flowing backwards.5. Largest vein is the Vena Cava.
VeinsVeinsReceive blood from the capillariesTransport waste-rich and oxygen-poor
blood back to the lungs and heart Allow blood to move in one directionBlood is usually purplish due to low
oxygen levels (de-oxygenated)
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Valves are located inside the veins. The valves only allow blood to move in one direction.
Blood FlowBlood Flow
Heart Lungs Heart Body
http://www.youtube.com/watch?v=mH0QTWzU-xI
AORTA - artery
Vena Cava - vein
Atria
Ventricles
Unoxygenated blood comes in from the top of the body through the superior vena cava andUnoxygenated blood comes in from the lower body though the inferior vena cava.UNoxygenated blood enters the atrium on the right side of the heart.
The atrium
contracts and the tricuspid
valve opens, forcing
the blood down into
the ventricle.
The ventricle contracts. This forces
the unoxygenated blood through the pulmonary valve and into the pulmonary
arteries.
The right pulmonary artery takes the
unoxygenated blood to the right lung.
The left pulmonary artery takes the
unoxygenated blood to the left lung.
THE PULMONARY ARTERIES ARE THE
ONLY ARTERIES THAT CARRY
UNOXYGENEATED BLOOD.
Oxygenated blood from the right lung returns to the heart
through the right pulmonary vein.
Oxygenated blood from the left lung
returns to the heart through the left pulmonary vein.
THE PULMONARY VEINS ARE THE
ONLY VEINS THAT CARRY
OXYGENATED BLOOD.
Oxygenated blood then
enters the left atrium.
The left atrium contracts. This forces
the oxygenated
blood through the mitral (bicuspid)
valve into the left ventricle.
Left ventricle contracts and Oxygenated
blood is forced into the aorta to be carried to the rest of
the body.
Oxygenated blood is carried to all body cells where oxygen
diffuses into the cells and carbon dioxide diffuses into the blood.
Blood carrying carbon dioxide then returns to
the heart.
And the cycle
begins again.
http://www.youtube.com/watch?
v=0oNabrnXR68&NR=1
Meanwhile…Meanwhile…
While the blood is moving oxygen
and carbon dioxide around, it is also moving nutrients,
other wastes, hormones, and
antibodies at the same time.
http://www.youtube.com/watch?v=P_d0ykpzQgYhttp://www.youtube.com/watch?v=q0s-
1MC1hcE&feature=related
Close up of heart valveHeart sounds are made by the valves
as they open and close
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Get out ISN so we can finish Notes Get out ISN so we can finish Notes on Circulatory Systemon Circulatory System
Write in Planner-Finish notes & brainpop video/quiz-Homework due Thursday!!
BloodBloodhttp://www.youtube.com/watch?http://www.youtube.com/watch?v=4GUYdaM3QIY&feature=relatedv=4GUYdaM3QIY&feature=related
A. Responsible for carrying food & oxygenB. There is about 5 liters of blood in the
average size adult human bodyTravels through thousands of miles of
blood vesselsCarries nutrients, water, oxygen and
waste products to and from your body cells.
Made up of liquids, solids and small amounts of oxygen and carbon dioxide.
BloodBlood
1. Plasma1. PlasmaA. Plasma is the liquid part of the blood
made up of mostly waterB. About half of your blood is made of
plasmaC. Nutrients, minerals, oxygen are
dissolved and carried to body cells, waste from body cells is also carried
Plasma is made in the liver.
PlasmaPlasma
Red Blood CellsRed Blood CellsRBC are made in the center of long bonesContain hemoglobin that helps the RBC to
carry oxygen to all parts of body. About 5,000,000 Red Blood Cells in ONE
drop of blood. Takes carbon dioxide and transports it
back to the lungs
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White Blood CellsWhite Blood CellsWhite blood cells protect the body from
germsAre part of the immune systemDefend body against bacteria, viruses,
foreign substancesAttack and destroy germs when they
enter the body
PlateletsPlatelets
Platelets are blood cells that help stop bleeding
Help clot blood when a person is cut.
user.gru.net/clawrence/ vccl/chpt7/plate.htm
Blood TypesBlood Types
Blood TypesBlood Types
The universal donor is O BloodThe universal recipient is AB BloodBlood transfusionType A can receive Type A or Type OType B can receive Type B or Type )Type AB can receive Type A, Type B, Type
AB or Type OType O can only receive Type O