Presentation on theme: "S. MORRIS 2006. The circulatory system carries blood and dissolved substances to and from different places in the body. The Heart has the job of pumping."— Presentation transcript:
The circulatory system carries blood and dissolved substances to and from different places in the body. The Heart has the job of pumping these things around the body. The Heart pumps blood and substances around the body in tubes called blood vessels. The Heart and blood vessels together make up the Circulatory System. What is the circulatory system?
lungs head & arms liver digestive system kidneys legs pulmonary artery aorta pulmonary vein main vein LeftRight How does this system work? Circulatory System
Lungs Body cells Our circulatory system is a double circulatory system. This means it has two parts parts. the right side of the system deals with deoxygenated blood. the left side of the system deals with oxygenated blood.
The Heart These are __________. They carry blood away from the heart. This is a __________. It brings blood from the body, except the lungs. Coronary arteries, the hearts own blood supply The heart has __________ chambers 2 atria 2 ventricles now lets look inside the heart
The Heart Left Ventricle Left Atrium Right Atrium Right Ventricle valve Vein from Lungs Artery to Head and BodyArtery to Lungs Vein from Head and Body valve
How does the Heart work? blood from the body enters by the __________ ________ ________ blood from the lungs enters through the ___________________ ________________ The heart beat begins when the heart muscles relax and blood flows into the atria. STEP ONE
The atria then contract and the valves ________ to allow blood into the ventricles. How does the Heart work? STEP TWO
How does the Heart work? The valves __________ to stop blood from flowing backwards. The ___________ contract forcing the blood to leave the heart. At the same time, the atria are relaxing and once again filling with blood. The cycle then repeats itself. STEP THREE
Blood from the heart gets around the body through blood vessels: There are 3 types of blood vessels a. ___________ b. ____________ c. _____________ The components of the heart:
The ARTERY thick muscle and elastic fibres Arteries carry blood ____________________________ the elastic fibres allow the artery to stretch under pressure the thick muscle can contract to push the blood along.
The VEIN Veins carry blood towards from the _____________________________. thin muscle and elastic fibres veins have ________ which act to stop the blood from going in the wrong direction. body muscles surround the veins so that when they contract to move the body, they also squeeze the veins and push the blood along the vessel.
The CAPILLARY Capillaries link ______________ with _______________. the wall of a capillary is only one cell thick they exchange materials between the blood and other body cells. Where do we know gases exchange? __________________ What system is that in? ____________________.
artery vein capillaries body cell The CAPILLARY capillary bed A collection of capillaries is known as a capillary bed.
Review work with a partner answer the following questions: 1.Arteries carry blood where? 2.Veins carry blood where? 3.What connects veins and blood? 4.What is the first step in the heart beating? 5.Explain the steps that make blood flow through the heart (where blood starts and where it goes to).
Word Bank: Abdominal Aorta, Aorta, Aortic Valve, Bicuspid (Mitral) Valve, Inferior Vena Cava, Left Pulmonary Artery, Left Pulmonary Veins, Left Atrium, Left Ventricle, Pulmonary Valve, Right Pulmonary Artery, Right Pulmonary Veins, Right Atrium, Right Ventricle, Superior Vena Cava, Tricuspid Valve
1.Why is the right side of the heart blue? 2.Why is the left side of the heart red? 3. Why does the right side have oxygen poor blood? 4. Why does the right side have oxygen rich blood?
Heart Activities: 1.Create Heart Foldable 2.Vocab Index Card Blood flow order activity 3.Red and Blue heart activity
what’s in red blood cells white blood cells platelets plasma carbon dioxide digested food waste (urea) hormones oxygen
Red Blood Cells JOB: contain hemoglobin, a molecule specially designed to hold ____________ and carry it to cells that need it. can change shape to an amazing extent, without breaking, as it squeezes single file through the capillaries. a biconcave disc that is round and flat without a nucleus
Erythrocytes (Red Blood Cells) Contains hemoglobin: –An oxygen carrying protein –Turns the cell __________ when carrying Oxygen –Cell is _________when it doesn’t carry O2 Lacks a nucleus Life span of cell = 120 days
White Blood Cells there are many different types and all contain a _________ _________. the two main ones are the ___________________ and the macrophages. some lymphocytes fight disease by making antibodies to destroy invaders by dissolving them. other lymphocytes make antitoxins to break down poisons. macrophages ‘eat’ and digest micro-organisms.
Platelets Platelets are bits of cell broken off larger cells. Platelets job: to produce fibers that help ___________ _________. (i.e: when you get a cut!)
Plasma A straw- coloured liquid that carries the cells and the platelets which help blood clot. carbon dioxide glucose amino acids proteins minerals vitamins hormones waste materials like urea. It also contains useful things like;
SUMMARY copy and complete the following; Arteries take blood ______ from the heart. The walls of an artery are made up of thick _________ walls and elastic fibres. Veins carry blood ________ the heart and also have valves. The _________ link arteries and veins, and have a one cell thick wall. Blood is made up of four main things ______, the liquid part of the blood; Red Blood Cells to carry ______; White Blood cells to protect the body from disease and _________ to help blood clot. away platelets towards capillaries plasma oxygen muscular
Blood Types Four main types of blood: _____________________ ______ Different proteins found on the RBC and plasma determine the blood type. You can also be Negative or Positive
How do you know who can donate to who? By the antigens and antibodies located in the plasma and on the Red blood cell.
Blood type AB Blood type B Blood type A Antibodies in the plasma Blood type O Antibodies in the plasma A Antigens B Antigens AB AntigensNo Antigens
So what does all this mean? 1.When a certain blood type donates to another blood type, the antibodies and antigens can NOT aggulate (or clump together) 2.If they clump together these two types CAN NOT donate to each other! 3.The blood clumps and makes it difficult to pass through the blood vessels forming blood clots!
Blood Transfusions: antibodies against the donor blood's antigensThe transfusion will work if a person who is going to receive blood has a blood group that doesn't have any antibodies against the donor blood's antigens. But if a person who is going to receive blood has antibodies matching the donor blood's antigens, the red blood cells in the donated blood will clump
Blood Typing activity Lets try and see who can donate and receive blood from whom.
Here is what happens: If Type B gives to Type A: Why did type A blood clump together? Because Type B has anti-A antibodies and they fit with the antigens on type A causing it to clump!
Blood Mixing Lab With a partner work through the blood typing lab. Alleles & Antibodies O anti-A anti-B A anti-B B anti-A AB None ONone AClumpNoneClumpNone BClump None ABClump None
Lets review Blood Types With your partner answer the following questions: 1.Who can Type A donate to? 2.Can Type B donate to Type AB? Why? 3.Which Type is considered the Universal Donor (Can donate to everyone)? 4.Which Type is considered the Universal Recipient (Can receive from everyone)?
Blood Donators and Receivers? Red blood cell Antigens Plasma Antibodies Blood Recipient (Receiving the blood) Blood Donor (Donating blood) TYPE A Blood Antigen A TYPE B Blood Antigen B TYPE AB Blood Antigens A and B Type O Blood No Antigens None Type A Type O Type A Type B Type AB Type O Type B Type O Type A Type AB Type B Type AB Type A Type B Type AB Type O
Blood Diseases: Problems of RBC Anemia Low iron or hemoglobin Person feels tired, weak & short of breath Cure: Add iron to diet
Sickle Cell Anemia Genetic disease RBC are sickle shaped RBC can’t pass through capillaries well Blood clots, lack of oxygen to cells. Can be deadly
Blood Diseases: Problems with White Blood cells: Normal White blood cells help to _______ ________________. When there is an injury or invasion of bateria/virsus the number of WBC’s _____________ in that area. WBC’s numbers go back to normal after fighting off the infection.
Leukemia WBC disease: Leukemia Blood cancer WBC count increases abnormally Usually increases to 73k or above #’s don’t decrease after time Leukemia WBC’s don’t fight infections Bone marrow is busy making “bad” WBC instead of RBC, which leads to a lack of oxygen
Platelets Blood Diseases: Problems of Platelets BruisesBruises Platelet number is low Blood clots can’t form Small black and blue marks Genetic disease Platelets don’t contain a chemical that starts clotting Trouble clotting blood when injured
Blood Vessels disease: AtherosclerosisAtherosclerosis Plaque builds up in the arteries that supply O2 to the heart. Can cause a heart attack because blood flow is blocked from getting to the heart. Caused mainly by ___________.
Counting Blood cells to determine disease packet/lab.
Monday 11/22/10 Review Tuesday 11/23/10 TEST!! Review activities: –Vocab card activity for heart blood flow. (the order blood flows through the heart and the structure of the heart) –Draw the heart and label all of the components on red and blue paper in a group. –Blood typing review with cut outs –Respiratory review- Pictionary or Jeopardy?? –Draw a diagram showing how respiratory works with Cardio