the circ ulatory system
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The Circulatory System
Warm Up:Compare and Contrast the following systems in complete sentences~ Excretory System~ Urinary System
FunctionTransportation system by which oxygen and
nutrients reach the body's cells, and waste materials are carried away.
Also carries substances called hormones, which control body processes, and antibodies to fight invading germs.
Circulatory System Works with….Digestive System~ breaks down food and nutrients Respiratory System ~ provides oxygen that cells need to release
energy Transports materials from the digestive system
and the respiratory system to the cells
Parts of the Circulatory System
Divided into three major parts: The Heart The Blood The Blood Vessels
The heart, the lungs, and the bloo d vessels work together to form the the circulatory system.
http://users.tpg.com.au/users/amcgann/body/circulatory.html
3 Types of Circulation:
Pulmonary circulationCoronary circulationSystemic circulation
Pulmonary Circulation
Movement of blood from the heart, to the lungs, and back to the heart again
Coronary CirculationMovement of blood through the tissues of the heart
Systemic CirculationSupplies nourishment to all of the tissue located throughout
the body , except for the heart and lungs
Blood VesselsHollow tubes that circulate your blood
Three Types of Blood Vessels ArteriesVeinsCapillaries
ArteriesCarry blood AWAY from the heartHeart pumps blood Main artery called the aorta Aorta divides and branches Each region of your body has system of
arteries supplying it with fresh, oxygen-rich blood.
ArteriesTough on the outside Smooth on the inside Muscular wall helps the heart pump blood
http://hes.ucf.k12.pa.us/gclaypo/circdia.html
Have strong, muscular walls
The inner layer is very smooth so that the blood can flow easily
CapillariesVery thinOnly one cell thickConnect arteries & veins
CapillariesFood and oxygen released to the body cells Carbon dioxide and other waste products
returned to the bloodstream
http://hes.ucf.k12.pa.us/gclaypo/circdia.html
Valves are located inside the veins. The valves only allow blood to move in one direction.
VeinsCarry blood to the heartReceive blood from the capillariesTransport waste-rich/ oxygen-poor blood back
to the lungs and heart Valves are located inside the veins Allow blood to move in one direction
Close up of heart valveHeart sounds are made by the valves
as they open and close
http://hes.ucf.k12.pa.us/gclaypo/circdia.html
BloodPumped by your heart. Travels 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.
Red Blood CellsRed blood cells carry oxygen from the lungs to all the cells of
the body. Takes carbon dioxide and transports it back to the lungsAbout 5,000,000 Red Blood Cells in ONE drop of blood. Made in red bone marrowCirculate for 120 days
White Blood CellsWhite blood cells protect the body from germsGuard against infection, fight parasites, and
attack bacteriaNumber of WBC’s increases when body is
fighting
scienceu.fsu.edu www.merck.com/pubs/mmanual_home/ illus/167i2.htm
Platelets
Platelets are blood cells that help stop bleeding
Forms a net-like structure for clotting
PlasmaPlasma is the liquid part of the bloodAbout half of your blood is made of plasmaThe plasma carries the blood cells throughout the body• 10% dissolved gases, salts, nutrients,
enzymes, hormones, wastes, and proteins.
90% waterPlasma is made in the liver.
What is the Scenario?A person cannot get out of the bed
early in the morning. The person is feeling very tired throughout the day, which causes their work habit to be low. Sometimes the person has to go and get a blood transfusion at the doctor to increase nutrients to the body? What is causing the person to feel this way?
What is the Scenario?A baby has to be rushed to the hospital for severe bleeding. The baby is released and told that he has to wear a helmet on their head when they are outside playing. What might be cause of this diagnosis?
What is the Scenario?One day Jessica wakes up and her throat is
hurting and she is running a fever. The next day she feels worse so she stays home from school. She is still running a fever so her mother gives her plenty of fluids to drink. On the third day the fever breaks and Jessica is able to get out of the bed and eat a little more. On the fourth day, Jessica is able to move around a lot better and she is back to her normal self, but mom keeps her home to progress her health. ….on the 7th day, she is able to return to school. What has happened to Jessica?
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