circulatorypresentation2011

Circulation: 

Circulation

Slide 2: 

Introduction The human vascular system consists of approximately 70,000 miles of blood vessels; this could reach from New York to San Francisco about 24 times!! New York San Francisco Blood vessels, along with the heart, are responsible for the circulation of blood throughout the body.

Slide 3: 

Components - Heart - Blood vessels - Blood Pumps Oxygen to cells Take Carbon Dioxide away for disposal Travels from right side of the heart to the lungs for pick up of oxygen Travels from left side of heart to the body with blood that is rich in oxygen and drops it off and picks up carbon dioxide

Slide 4: 

Pulmonary Circulation Pulmonary circulation occurs when blood that has been used by the cells of the body is returned to the heart and transported to the lungs for gas exchange. O 2 2 CO Exchange of gases

Slide 5: 

Systemic Circulation This network of blood vessels carrying oxygenated blood picks up essential nutrients from the digestive tract to deliver to all other cells of the body. Systemic circulation also removes waste products from the body cells. Venous Blood Arterial Blood Has a larger concentration of carbon dioxide Pumped by the heart to the lungs Has a larger concentration of oxygen than carbon dioxide Pumped by the heart to the body cells Digestive system

HOW DOES IT pump blood?: 

HOW DOES IT pump blood? Heart is pump Arteries and veins are main tubes (plumbing) A rteries A way from Heart Veins to Heart Diffusion happens in capillaries (oxygen, CO2, glucose diffuse in or out of blood)

Slide 7: 

Circulation of Blood Vena Cava Aorta Arteries Arterioles Capillaries Venules Veins Arteries carry blood away from the heart and veins carry blood toward the heart. The capillaries are exchange vessels located between the arterial and venous systems.

Slide 8: 

Septum divides the heart into a right and left side Has four chambers: Right and left atrium Right and left ventricle Valves allow blood to pass from the atria to the ventricles The pulmonary artery and aorta carry blood away from the heart

Slide 9: 

Blood Flow through Heart Blood from the body travels into the right atrium, moves into the right ventricle, and is finally pushed into lungs in the pulmonary arteries The blood then picks up oxygen and travels back to the heart into the left atrium through the pulmonary veins The blood then travels through the to the Left Ventricle and exits to the body through the Aorta… Right Atrium Left Atrium

Slide 10: 

O 2 -rich blood O 2 -poor blood Right atrium Left atrium Left ventricle Right ventricle From body Right lung Left lung From body To body Valves Valves Figure 23.4

Slide 11: 

Provides blood supply to the heart Receives oxygenated blood from the aorta into the coronary arteries Coronary veins carry deoxygenated blood to the right atrium Coronary Circulation Click picture for larger view.

Coronary Circulation: 

Coronary Circulation Click to return to previous slide.

Slide 13: 

The oxygen the red blood cells are carrying is given to the body ’ s tissue. And the CO 2 (waste) from the tissue is given to the same blood cell to be exhaled. Tissue Tissue Technically the Hemoglobin in the blood (a substance full of iron) attracts oxygen from the lungs. The red blood cell then carries it to the desired tissue. Because this tissue has a high CO 2 count the hemoglobin lets go of its oxygen and collects the carbon dioxide. You see the hemoglobin has an affinity for whichever gas has a greater count. Because the tissue has a large amount of built up waste (CO 2 ) the hemoglobin attracts it and then replaces it with oxygen, and vise versa in the lungs. How It Works… Oxy-Rich Blood Cell Oxy-Poor Blood Cell Gas Exchange

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Oxygen Rich Oxygen Rich Oxygen Poor Oxygen Poor Tissue Don ’ t forget that the Hemoglobin in the red blood cells let go of the cell ’ s oxygen because of the large CO 2 (waste) count in the tissue.

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Plasma (55%) Water (90% of plasma) Dissolved salts (such as sodium, potassium, calcium) Substances being transported (such as O 2 , CO 2 , nutrients, wastes, hormones) Cellular elements (45%) Red blood cells (erythrocytes) White blood cells (leukocytes) Platelets Blood Proteins

Blood Cells: 

Blood Cells Red blood cells (erythrocytes) Contain hemoglobin Rapidly transport oxygen (and carbon dioxide) Have no nucleus when mature Live only 120 days then are replaced White blood cells (leukocytes) Tissue maintenance and repair Defenses against pathogens

WBC: Never Let Monkey Eat Bananas : 

WBC: N ever L et M onkey E at B ananas 5 KINDS OF WHITE BLOOD CELLS NEUTROPHIL S-PHAGOCYTOSIS AND PROCESSING LYMPHOCYTES - IMMUNITY MONOCYTES -GIVE RISE TO MACROPHAGES EOSINOPILS- ASSOCIATED WITH ALLERGIES BASOPHILS- INTENSIFY INFLAMMATION

Slide 19: 

White Blood Cells

Slide 20: 

Platelets (bits of membrane-enclosed cytoplasm that aid clotting) Fibrin Red blood cell Colorized SEM Colorized SEM Figure 23.12c

Platelets: 

Platelets Platelets function in blood clotting Platelets and all blood cells arise from stem cells in bone marrow

Slide 22: 

ABO and Rh Blood Types Compatibility Chart Blood Type Can Accept From Can Donate To A B AB universal recipient O universal donor A, O B, O A, B, AB, O O A, AB B, AB AB O, A, AB, B

Slide 23: 

Coronary artery (supplies oxygen to the heart muscle) Dead muscle tissue Blockage Aorta Figure 23.13