Chapter 15 Cardiovascular System
Cardiovascular System <ul><li>heart </li></ul><ul><li>blood vessels  </li></ul><ul><li>Average Size of Heart </li></ul><ul...
 
Know all of this!
 
Heart Chambers <ul><li>Right Atrium </li></ul><ul><ul><li>receives blood from  </li></ul></ul><ul><ul><ul><li>inferior ven...
 
Heart Valves <ul><li>Tricuspid Valve </li></ul><ul><ul><li>right A-V valve </li></ul></ul><ul><ul><li>between right atrium...
Path of Blood  Through the Heart
Blood and its flow <ul><li>Remember that deoxygenated blood is represented by blue (but it is actually a deep, deep red) <...
Path of Blood Through the Heart
Pulmonary Circuit (lungs) CO 2  blood from the body CO 2  blood from the body CO 2  to the lungs Superior vena cava O 2 CO 2
Systemic Circuit (body)   O 2  blood from the lungs O 2  blood from the lungs O 2  blood to the body CO 2 O 2
Summary <ul><li>Atria  receive blood  </li></ul><ul><li>Ventricles  pump blood out of the heart </li></ul><ul><li>Arteries...
Review of blood flow <ul><li>Deoxygenated blood comes in the SVC or IVC to the Rt. Atrium </li></ul><ul><li>Through the tr...
“ Pumps your Blood”
Coronary Arteries <ul><li>These are the arteries that feed the heart muscle with oxygen </li></ul><ul><li>If these get clo...
Summary of Changes During Cardiac Cycle
Lubb dupp <ul><li>This is the terminology most scientists use to describe the sound of the heart </li></ul><ul><li>It is m...
The conduction of the heart <ul><li>Remember how your heart can even beat outside of your body??? </li></ul><ul><li>It has...
 
The conduction of the heart <ul><li>The Sinoatrial (SA) node is at the top of the rt. atrium </li></ul><ul><li>The Atriove...
S-A node A-V node Follow the path!
Electrocardiogram <ul><li>recording of electrical changes that occur in the myocardium </li></ul><ul><li>used to assess he...
 
Regulation of Cardiac Cycle <ul><li>physical exercise </li></ul><ul><li>body temperature </li></ul><ul><li>concentration o...
Regulation of Cardiac Cycle Autonomic nerve impulses alter the activities of the S-A and A-V nodes
Blood Vessels <ul><li>arteries </li></ul><ul><ul><li>carry blood away from ventricles of heart </li></ul></ul><ul><li>arte...
*Veins have valves because they have to work against gravity. With each pump of the heart the blood goes through a valve a...
 
Capillary Network
Regulation of Capillary  Blood Flow <ul><li>Precapillary sphincters  </li></ul><ul><ul><li>may close a capillary </li></ul...
 
Arterial Blood Pressure Blood Pressure  – force the blood exerts against the inner walls of the blood vessels <ul><li>Arte...
Blood Pressure <ul><li>Desired to be under 120/80 </li></ul><ul><li>Measured in mmHg </li></ul><ul><li>Top number is systo...
 
 
 
 
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15 Cardiovascular

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Heart, blood vessels, flow of blood through the heart

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  • Make sure they know that veins have valves and why
  • Know the ones with arrows! This should not be that hard because they already know many of the words and their locations 
  • Arrows are next to the ones they should know! This should not be that hard because they already know many of the words and their locations 
  • Know the ones with arrows!
  • 15 Cardiovascular

    1. 1. Chapter 15 Cardiovascular System
    2. 2. Cardiovascular System <ul><li>heart </li></ul><ul><li>blood vessels </li></ul><ul><li>Average Size of Heart </li></ul><ul><ul><li>14 cm long </li></ul></ul><ul><ul><li>9 cm wide </li></ul></ul><ul><ul><li>Fist-sized </li></ul></ul>
    3. 4. Know all of this!
    4. 6. Heart Chambers <ul><li>Right Atrium </li></ul><ul><ul><li>receives blood from </li></ul></ul><ul><ul><ul><li>inferior vena cava </li></ul></ul></ul><ul><ul><ul><li>superior vena cava </li></ul></ul></ul><ul><ul><ul><li>coronary sinus </li></ul></ul></ul><ul><li>Left Atrium </li></ul><ul><ul><li>receives blood from pulmonary veins </li></ul></ul><ul><li>Right Ventricle </li></ul><ul><ul><li>receives blood from right atrium </li></ul></ul><ul><li>Left Ventricle </li></ul><ul><ul><li>receives blood from left atrium </li></ul></ul>
    5. 8. Heart Valves <ul><li>Tricuspid Valve </li></ul><ul><ul><li>right A-V valve </li></ul></ul><ul><ul><li>between right atrium and right ventricle </li></ul></ul><ul><li>Bicuspid Valve </li></ul><ul><ul><li>left A-V valve </li></ul></ul><ul><ul><li>aka mitral valve </li></ul></ul><ul><ul><li>between left atrium and left ventricle </li></ul></ul><ul><li>Pulmonary Valve </li></ul><ul><ul><li>semilunar valve </li></ul></ul><ul><ul><li>between right ventricle and pulmonary trunk </li></ul></ul><ul><li>Aortic Valve </li></ul><ul><ul><li>semilunar valve </li></ul></ul><ul><ul><li>between left ventricle and aorta </li></ul></ul>
    6. 9. Path of Blood Through the Heart
    7. 10. Blood and its flow <ul><li>Remember that deoxygenated blood is represented by blue (but it is actually a deep, deep red) </li></ul><ul><li>Oxygenated blood is represented by red and would be bright red in real life </li></ul><ul><li>The deoxygenated blood always comes back to the heart and enters the right side (but from our view it looks like the left) </li></ul><ul><li>It leaves and goes to the lungs to get oxygenated </li></ul><ul><li>It then enters the left side of the heart before getting pumped out the aorta to the rest of the body </li></ul>
    8. 11. Path of Blood Through the Heart
    9. 12. Pulmonary Circuit (lungs) CO 2 blood from the body CO 2 blood from the body CO 2 to the lungs Superior vena cava O 2 CO 2
    10. 13. Systemic Circuit (body) O 2 blood from the lungs O 2 blood from the lungs O 2 blood to the body CO 2 O 2
    11. 14. Summary <ul><li>Atria receive blood </li></ul><ul><li>Ventricles pump blood out of the heart </li></ul><ul><li>Arteries carry oxygenated blood away from the heart </li></ul><ul><ul><li>Exception: pulmonary arteries carry deoxy. from the heart to the lungs </li></ul></ul><ul><li>Veins carry deoxygenated blood back to the heart </li></ul><ul><ul><li>Exception: pulmonary veins carry oxygenated blood from the lungs to the heart </li></ul></ul>
    12. 15. Review of blood flow <ul><li>Deoxygenated blood comes in the SVC or IVC to the Rt. Atrium </li></ul><ul><li>Through the tricuspid valve </li></ul><ul><li>To the Rt. Ventricle </li></ul><ul><li>Out the pulmonary valve </li></ul><ul><li>Into the pulmonary artery </li></ul><ul><li>To the lungs to get oxygenated </li></ul><ul><li>Oxygenated blood comes back to the heart in the pulmonary veins into the Lt. Atrium </li></ul><ul><li>Through the bicuspid valve </li></ul><ul><li>To the Lt. Ventricle </li></ul><ul><li>Out the aortic valve </li></ul><ul><li>Into the Aorta and out to the rest of the body </li></ul>The explanation of blood flow on the worksheet is great except that it leaves out the valves that are getting passed through, make sure you know that too!
    13. 16. “ Pumps your Blood”
    14. 17. Coronary Arteries <ul><li>These are the arteries that feed the heart muscle with oxygen </li></ul><ul><li>If these get clogged you have a heart attack </li></ul><ul><li>When oxygenated blood gets pushed into the aorta there are detours leading to the coronary arteries </li></ul><ul><li>Coronary arteries  right and left  cardiac veins  coronary sinus  right atrium </li></ul>
    15. 18. Summary of Changes During Cardiac Cycle
    16. 19. Lubb dupp <ul><li>This is the terminology most scientists use to describe the sound of the heart </li></ul><ul><li>It is made by the opening and closing of valves </li></ul><ul><li>The lubb sound is made by the A-V valves closing </li></ul><ul><li>The dupp sound is made by the aortic and pulmonary valves (semilunar) closing </li></ul><ul><li>Listen to your partners (or your) heart for this sound with the stethoscope  </li></ul>
    17. 20. The conduction of the heart <ul><li>Remember how your heart can even beat outside of your body??? </li></ul><ul><li>It has its own electrical system!! </li></ul>
    18. 22. The conduction of the heart <ul><li>The Sinoatrial (SA) node is at the top of the rt. atrium </li></ul><ul><li>The Atrioventricular (AV) node is at the bottom of the rt. atrium (in between atrium and ventricle) </li></ul><ul><li>The impulse is conducted down the septum of the ventricles </li></ul><ul><li>It then branches back up </li></ul>
    19. 23. S-A node A-V node Follow the path!
    20. 24. Electrocardiogram <ul><li>recording of electrical changes that occur in the myocardium </li></ul><ul><li>used to assess heart’s ability to conduct impulses </li></ul>P wave – atrial depolarization; about to contract QRS wave – ventricular depolarization; about to contract T wave – ventricular repolarization
    21. 26. Regulation of Cardiac Cycle <ul><li>physical exercise </li></ul><ul><li>body temperature </li></ul><ul><li>concentration of various ions </li></ul><ul><ul><li>potassium </li></ul></ul><ul><ul><li>calcium </li></ul></ul><ul><li>parasympathetic impulses decrease heart action </li></ul><ul><li>sympathetic impulses increase heart action </li></ul><ul><li>cardiac center regulates autonomic impulses to the heart </li></ul>
    22. 27. Regulation of Cardiac Cycle Autonomic nerve impulses alter the activities of the S-A and A-V nodes
    23. 28. Blood Vessels <ul><li>arteries </li></ul><ul><ul><li>carry blood away from ventricles of heart </li></ul></ul><ul><li>arterioles </li></ul><ul><ul><li>receive blood from arteries </li></ul></ul><ul><ul><li>carry blood to capillaries </li></ul></ul><ul><li>capillaries </li></ul><ul><ul><li>sites of exchange of substances between blood and body cells </li></ul></ul><ul><li>venules </li></ul><ul><ul><li>receive blood from capillaries </li></ul></ul><ul><li>veins </li></ul><ul><ul><li>carry blood toward RA of heart </li></ul></ul>
    24. 29. *Veins have valves because they have to work against gravity. With each pump of the heart the blood goes through a valve and can’t go back!
    25. 31. Capillary Network
    26. 32. Regulation of Capillary Blood Flow <ul><li>Precapillary sphincters </li></ul><ul><ul><li>may close a capillary </li></ul></ul><ul><ul><li>respond to needs of the cells </li></ul></ul><ul><ul><li>low oxygen and nutrients cause sphincter to relax </li></ul></ul>
    27. 34. Arterial Blood Pressure Blood Pressure – force the blood exerts against the inner walls of the blood vessels <ul><li>Arterial Blood Pressure </li></ul><ul><ul><li>rises when ventricles contract </li></ul></ul><ul><ul><li>falls when ventricles relax </li></ul></ul><ul><ul><li>systolic pressure – maximum pressure </li></ul></ul><ul><ul><li>diastolic pressure – minimum pressure </li></ul></ul>
    28. 35. Blood Pressure <ul><li>Desired to be under 120/80 </li></ul><ul><li>Measured in mmHg </li></ul><ul><li>Top number is systolic (pressure when heart contracts) </li></ul><ul><li>Bottom number is diastolic (pressure when heart is at rest) </li></ul><ul><li>Both are important but especially the bottom number because your heart needs to rest </li></ul><ul><li>Learn and practice taking blood pressure with a sphygmomanometer </li></ul>

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