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Cardiovascular & Circulatory Systems. If we looked at all the blood vessels in your body, what would the total length be? Around the world twice! How many times will your heart beat in a lifetime? 3 billion!!. Fun Facts!!!. 1. Function of CV system
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If we looked at all the blood vessels in your body, what would the total length be? Around the world twice! How many times will your heart beat in a lifetime? 3 billion!! Fun Facts!!!
1. Function of CV system Provides nutrients and oxygen through blood Carries away waste (CO2) Helps fight disease
Cardiovascular & Circulatory System • Three Parts: • Heart • Blood Vessels • Blood
Structures - Heart • Shape- Strawberry • Size-Fist • Weight- 1 pound • Location- Center of the chest
Heart - Structures • 1. Septum– Divides the Heart into Right and Left • 2. Chambers • Atrium – Top (smaller) • Ventricle- Bottom (bigger) • 3 Valves- keep blood flowing in one direction
RT Side- Without 0xygen LT Side- With Oxygen
Blood Vessels • 1. Arteries (RED) -Carries Blood Away from the Heart • 2. Veins (BLUE)- Carry Blood Back to the Heart • 3. Capillaries -Where exchange of nutrients takes place (O2, Waste, Etc…)
Blood Vessels • http://www.youtube.com/watch?v=CjNKbL_-cwA • Circulation- http://www.youtube.com/watch?v=PgI80Ue-AMo&feature=related • Capillaries- http://www.youtube.com/watch?v=Q530H1WxtOw
Blood Pressure Definition: The Force of the Blood against the Walls of the Arteries Systole: Top Number of Blood Pressure (ventricles contracting) Diastole: Bottom Number of Blood Pressure (ventricles filled w/ blood and relaxed) 120/80
Blood - Function • Carries food and oxygen to all cells • Rid the body of waste
Blood Components 1. Red Blood Cells 2. White Blood Cells 3. Platelets 4. Plasma
Red Blood Cells • Made in the Marrow of Bones • Carry Oxygen • Hemoglobin • The Protein that attracts O2 to the RBC • Prone to Defect/illnesses
Blood Components • http://www.youtube.com/watch?v=R-sKZWqsUpw • http://www.youtube.com/watch?v=CRh_dAzXuoU
White Blood Cells • 1.Made in the Marrow of Bones • 2. Defend the Body against Disease
Plasma • The Liquid part of Blood (55% of blood) • Mostly Water
Platelets • 1. Aid in the clotting of blood • 2. How does it do this? • Cut occurs. Platelets Activated • Platelets RUSH to the wound • Fibrin is released (Spider Web) • Web is formed over Wound • Trapped Cells Harden and form a Scab
Cut occurs…. Platelets Actived! PLATELETS- STEP 1
Platelets RUSH to the wound! PLATELETS – STEP 2
Fibrin is released (Spidey Web) PLATELETS- STEP 3
Web is formed over Wound. PLATELETS – STEP 4
-Trapped Cells Harden and form a Scab PLATELETS – STEP 5 SPIDEY SAVES THE DAY
Blood Types • A, B, AB, O • Donor-Person who gives blood • Receipt- Person who receives blood • Clumping-Occurs when the blood types do not mix
Blood Types A, B, AB, O Recipient D o n o r *O = Universal Donor *AB =Universal Recipient
BLOOD TYPES http://www.youtube.com/watch?v=MZ6_hSvjV_E
Really hard Logic/Blood Type Puzzle? Use the following information to predict each person's blood type. Bill can give blood to joe mike and sue Don can give blood to bob but not bill Bob can give blood to Mike but not Joe Tom can give blood to kelly, Sue, Don, and mike Kelly can give blood to sue and bob but not to tom sue cannot give blood to kelly joe can give blood to mike but not bob or sue mike can GET blood from sue and bill Joe does not have an A antigen Bill________ Bob_______ Don_______ Joe_______ Kelly______ Mike_______ Sue_______ Tom_______ Answer in terms of blood type (A, B, AB, or O) By the way, this may help: a can be given to a or ab b can be given to b or ab ab can be given to ab o can be given to anyone http://answers.yahoo.com/question/index?qid=20080526202704AAo5bWa BLOOD TYPE CHALLENGE
http://www.youtube.com/watch?v=mH0QTWzU-xI Lets see how the heart works
Heart Animation • http://www.youtube.com/watch?v=H04d3rJCLCE • http://www.youtube.com/watch?v=rBQOLiFto6Q
Circulation Pulmonary- blood with little oxygen is pumped from rt side of heart to lungsSystemic- blood rich with oxygen is from lt side of heart to cells of the bodymyocardium- special type of muscle that helps heart contract rhythmically
Superior Vena Cava Aorta Pulmonary Artery Pulmonary Vein RT Atrium LT Atrium Tricuspid Valve LT Ventricle Bicuspid Valve RT Ventricle Inferior Vena Cava Septum
6. Oxygen rich blood returns to your heart through pulmonary veins
9. Blood is pumped through the aorta and delivered to rest of body.
Pathway of Blood Through the Heart • Any questions? • Lets watch it again… • Pathway of Blood
1. Blood needing oxygen enters heart through superior and inferior vena cava 2. The blood enters the right atrium 3. The tricuspid valve opens and blood flows into the right ventricle 4. From here, blood is pumped from the right ventricle to the pulmonary artery. Pathway of Blood Through the Heart
5. The pulmonary artery leads to the lungs. Here blood picks up oxygen. 6. Oxygen rich blood returns to your heart through pulmonary veins 7. Blood enters left atrium 8. Through the mitral (bicuspid valve) 9. Into the left ventricle. Pathway of Blood Through the Heart
10. From here, blood is pumped from the heart through the aorta – the largest artery in your body! From the aorta blood goes to the rest of the body Lets watch it again… Pathway of Blood Pathway of Blood Through the Heart