The Human Heart The heart is considered a “myocardial” muscle It is both a muscle and an organ It is a muscle because it h...
Parts of the Human Heart <ul><li>The human heart has over 20 parts to it </li></ul><ul><li>The human heart has it’s own “b...
Myocardial Muscle Tissue <ul><li>Heart tissue contracts because of it’s “nodes”(battery type) </li></ul><ul><li>Heart tiss...
Chambers <ul><li>The heart has 4 chambers </li></ul><ul><li>The inferior chambers of the heart pump blood out of the organ...
Path of Blood <ul><li>Deoxygenated blood comes to the heart though two large veins called the Inferior and Superior Vena C...
Right Atrium <ul><li>The Right Atrium is the smallest chamber of the human heart </li></ul><ul><li>It is a storage area fo...
Right Ventricle <ul><li>The Right Ventricle is larger than the Right Atrium </li></ul><ul><li>The Right Ventricle pumps bl...
Pulmonary Arteries <ul><li>The Pulmonary Arteries deliver blood to the Right and Left Lungs </li></ul><ul><li>The Arteries...
Osmosis <ul><li>Waste gases (carbon dioxide/Lactic Acid)are delivered in blood from the Pulmonary Arteries  </li></ul><ul>...
Osmosis <ul><li>Gases change places in the Alveolis because the pressure is greater in the opposing areas </li></ul><ul><l...
Gas Exchange <ul><li>Carbon Dioxide exchanges places with Oxygen within the lung’s alveoli </li></ul><ul><li>Humans then e...
Pulmonary Veins <ul><li>These veins are the only place in the Human Body where oxygenated blood travels. </li></ul><ul><li...
Left Atrium <ul><li>The Left Atrium is larger than the Right Atrium </li></ul><ul><li>The Left Atrium contracts to move ox...
Left Ventricle <ul><li>The Left Ventricle is the largest, strongest, thickest Chamber in the Human Heart </li></ul><ul><li...
Aorta <ul><li>The Aorta is the largest, strongest Artery in the Human Body </li></ul><ul><li>There are three parts to the ...
Carotid Arteries <ul><li>The Carotid Arteries deliver oxygenated blood to the Brain on both sides of the neck (Left and Ri...
Brachial Arteries <ul><li>The Right and Left Brachial Arteries deliver oxygenated blood to both upper arms </li></ul><ul><...
Descending Aorta <ul><li>The Descending Aorta delivers oxygenated blood to the inferior parts of the body </li></ul>
Nodes <ul><li>The Human Heart has two Nodes that aid in the contractions of the Chambers </li></ul><ul><li>The Sinoarteria...
Blood Pressures <ul><li>Distole </li></ul><ul><li>Happens when the Atriums contract and push blood into the ventricles </l...
Coronary Arteries <ul><li>The Heart has 4 major Coronary Arteries </li></ul><ul><li>Bring blood to the Heart “Muscle” </li...
Arteries vs. Veins <ul><li>All Arteries in your body lead away from the Heart </li></ul><ul><li>All Veins in your body lea...
Arterioles vs Veinules <ul><li>Arterioles are smaller Arteries that branch off main Arteries </li></ul><ul><li>Veinules ar...
Circulatory System <ul><li>Blood leaving the Heart through the Aorta will take about 20-30 seconds to return to the Heart ...
Heart Nodes <ul><li>The Heart has it’s own “firing” sequence </li></ul><ul><li>This Sequence is called Sinus Rhythm  </li>...
Sinoatrial Node <ul><li>The Sinoartrial Node is in the Right Atrium wall </li></ul><ul><li>The Sinoarteral Node causes the...
Atrioventricular Node <ul><li>The Atrioventricular Node is in the walls between the Right Atrium and Right Ventricle </li>...
Heart Valves <ul><li>Heart Valves are created in a way that blood can only go “One Way” </li></ul><ul><li>Blood should not...
Tricuspid Valves <ul><li>Tricuspid Valves are found between the Ventricles and the Atriums </li></ul><ul><li>Tricuspid Val...
Semilunar Valves <ul><li>You have a Semilunar Valve between the Ventricles and the Blood Vessels leaving the Heart </li></...
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The Human Heart The heart is considered a "myocardial" muscle

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The Human Heart The heart is considered a "myocardial" muscle

  1. 1. The Human Heart The heart is considered a “myocardial” muscle It is both a muscle and an organ It is a muscle because it has contractions in it’s operations It is an organ because it has a “function” in the human body
  2. 2. Parts of the Human Heart <ul><li>The human heart has over 20 parts to it </li></ul><ul><li>The human heart has it’s own “battery Pack” </li></ul><ul><li>The human heart has two different compressions </li></ul><ul><li>The human heart is divided into two sections </li></ul><ul><li>The human heart has 4 chambers </li></ul>
  3. 3. Myocardial Muscle Tissue <ul><li>Heart tissue contracts because of it’s “nodes”(battery type) </li></ul><ul><li>Heart tissue never rests </li></ul><ul><li>The human heart can have over 250 contractions(beats)per minute </li></ul><ul><li>The human heart at rest can have as few as 45 contractions/beats per minute </li></ul><ul><li>The human heart does not reach tetnae because of lactic acid build up </li></ul>
  4. 4. Chambers <ul><li>The heart has 4 chambers </li></ul><ul><li>The inferior chambers of the heart pump blood out of the organ </li></ul><ul><li>The superior chambers brings blood into the heart </li></ul><ul><li>Valves allow blood to flow from one chamber to the next </li></ul>
  5. 5. Path of Blood <ul><li>Deoxygenated blood comes to the heart though two large veins called the Inferior and Superior Vena Cava’s </li></ul><ul><li>The Inferior Vena Cava returns blood to the heart from the inferior part of the human body </li></ul><ul><li>The Superior Vena Cava returns blood to the heart from the thorasic cavity and superior to that area of the body </li></ul>
  6. 6. Right Atrium <ul><li>The Right Atrium is the smallest chamber of the human heart </li></ul><ul><li>It is a storage area for blood to be held until it is pumped into the Right Ventricle </li></ul><ul><li>The valve between the Right Atrium and the Right Ventricle is the Atrioventricular Valve </li></ul>
  7. 7. Right Ventricle <ul><li>The Right Ventricle is larger than the Right Atrium </li></ul><ul><li>The Right Ventricle pumps blood into the Pulmonary Arteries that go to the lungs </li></ul><ul><li>The valve between the Right Ventricle and the Pulmonary Arteries is the Semilunar Valve </li></ul>
  8. 8. Pulmonary Arteries <ul><li>The Pulmonary Arteries deliver blood to the Right and Left Lungs </li></ul><ul><li>The Arteries become smaller Arterioles </li></ul><ul><li>The Arterioles slowly become smaller Arterial Capillaries </li></ul>
  9. 9. Osmosis <ul><li>Waste gases (carbon dioxide/Lactic Acid)are delivered in blood from the Pulmonary Arteries </li></ul><ul><li>Osmosis is the process of gases moving from levels of high pressure to areas having lower pressure </li></ul><ul><li>Osmosis takes place in the Alveolis of the Lungs </li></ul><ul><li>Humans inhale gas that is mostly Oxygen </li></ul><ul><li>Humans exhale gas that is mostly Carbon Dioxide (sometimes it has Lactic Acid in it also if you are exercising) </li></ul>
  10. 10. Osmosis <ul><li>Gases change places in the Alveolis because the pressure is greater in the opposing areas </li></ul><ul><li>Capillaries are microscopic blood vessels carrying only one red blood cell at a time </li></ul><ul><li>Capillary walls are very thin </li></ul><ul><li>Because of the thin capillary walls, gas can go through them to the other side </li></ul>
  11. 11. Gas Exchange <ul><li>Carbon Dioxide exchanges places with Oxygen within the lung’s alveoli </li></ul><ul><li>Humans then exhale the waste gases of Carbon Dioxide and Lactic Acid </li></ul><ul><li>Oxygen is taken into the microscopic capillaries back to larger venules and then to the Pulmonary Veins </li></ul>
  12. 12. Pulmonary Veins <ul><li>These veins are the only place in the Human Body where oxygenated blood travels. </li></ul><ul><li>All other veins in the Human Body carry only deoxygenated blood </li></ul><ul><li>Pulmonary Veins lead the newly oxygenated blood back to the Left Atrium </li></ul>
  13. 13. Left Atrium <ul><li>The Left Atrium is larger than the Right Atrium </li></ul><ul><li>The Left Atrium contracts to move oxygenated blood to the Left Ventricle </li></ul><ul><li>The valve blood leaves through to the Left Ventricle is the Mitrol Valve </li></ul>
  14. 14. Left Ventricle <ul><li>The Left Ventricle is the largest, strongest, thickest Chamber in the Human Heart </li></ul><ul><li>The Left Ventricle contracts with greater force than any of the other Chambers </li></ul><ul><li>The Left Ventricle contracts strong enough to create “Blood Pressure” thoughout all of the bodies Arteries </li></ul><ul><li>Blood leaves the Heart though the Aortic Valve into the Aortea </li></ul>
  15. 15. Aorta <ul><li>The Aorta is the largest, strongest Artery in the Human Body </li></ul><ul><li>There are three parts to the Human Aorta </li></ul><ul><li>The Ascending Aorta, The Aortic Arch, and the Descending Aorta </li></ul><ul><li>In the Aortic Arch, Three Arteries branch off </li></ul><ul><li>The Right Subclavian or Brachial Artery </li></ul><ul><li>The Common Carotid Artery </li></ul><ul><li>The Left Subclavian, or Brachial Artery </li></ul>
  16. 16. Carotid Arteries <ul><li>The Carotid Arteries deliver oxygenated blood to the Brain on both sides of the neck (Left and Right Carotid Arteries) </li></ul><ul><li>The two Carotid Arteries branch off of the Common Carotid Artery </li></ul><ul><li>Blood returning to the Superior Vena Cava come from the Jugular Veins (left and right) </li></ul>
  17. 17. Brachial Arteries <ul><li>The Right and Left Brachial Arteries deliver oxygenated blood to both upper arms </li></ul><ul><li>From the Brachial Arteries come the Radial Arteries </li></ul>
  18. 18. Descending Aorta <ul><li>The Descending Aorta delivers oxygenated blood to the inferior parts of the body </li></ul>
  19. 19. Nodes <ul><li>The Human Heart has two Nodes that aid in the contractions of the Chambers </li></ul><ul><li>The Sinoarterial Node is found in the superior section of the Right Atrium </li></ul><ul><li>The Atrioventricular Node is found between the Right Atrium and Right Ventricle </li></ul><ul><li>Nodes have electrical power to cause the Chambers to contract in a timely manner. </li></ul>
  20. 20. Blood Pressures <ul><li>Distole </li></ul><ul><li>Happens when the Atriums contract and push blood into the ventricles </li></ul><ul><li>Does not take a large amount of pressure to do this </li></ul><ul><li>Systole </li></ul><ul><li>Happens when the Ventricles contract and push blood out of the heart </li></ul><ul><li>Takes a tremendous amount of pressure to pump blood into the Aorta </li></ul>
  21. 21. Coronary Arteries <ul><li>The Heart has 4 major Coronary Arteries </li></ul><ul><li>Bring blood to the Heart “Muscle” </li></ul><ul><li>Blood inside the 4 chambers does not feed the Heart tissue with needed oxygen </li></ul><ul><li>Coronary Arteries are where Plaque or Cholesterol usually collects </li></ul><ul><li>The main Coronary Artery is nicknamed the “Widow Maker” due to the amount of Heart Attacks men of early years suffered </li></ul><ul><li>Blocked Coronary Arteries can be repaired by cleaning out the Plaque or Cholesterol “stuck” there </li></ul>
  22. 22. Arteries vs. Veins <ul><li>All Arteries in your body lead away from the Heart </li></ul><ul><li>All Veins in your body lead to the Heart </li></ul><ul><li>The only Artery that does not carry “oxygenated” blood is the Pulmonary Artery </li></ul><ul><li>The Pulmonary Artery takes de-oxygenated blood from the Right Ventricle to the Lungs to drop off Waste Gases </li></ul><ul><li>The Pulmonary Vein brings back oxygenated blood from the lungs </li></ul>
  23. 23. Arterioles vs Veinules <ul><li>Arterioles are smaller Arteries that branch off main Arteries </li></ul><ul><li>Veinules are smaller Veins that branch off main Veins </li></ul><ul><li>Capillaries are microscopic blood vessels where only one blood cell can fit through at any one time </li></ul><ul><li>You have veinus and arterial capillaries </li></ul>
  24. 24. Circulatory System <ul><li>Blood leaving the Heart through the Aorta will take about 20-30 seconds to return to the Heart </li></ul><ul><li>Blood leaving Aorta will branch off and go different directions every time it leaves the Heart </li></ul><ul><li>All blood returning to the Heart travels through the Liver first to be refined </li></ul><ul><li>All blood has to go through these organs every time it circulates: Heart, Lungs, Liver, Kidneys </li></ul><ul><li>Otherwise, blood does not go to every cell in the body </li></ul>
  25. 25. Heart Nodes <ul><li>The Heart has it’s own “firing” sequence </li></ul><ul><li>This Sequence is called Sinus Rhythm </li></ul><ul><li>If the correct Sequence does not happen the contractions of the Heart are called Fibrillation </li></ul><ul><li>Nodes are very similar to “Heart Batteries” </li></ul><ul><li>Nodes send out electrical signals for different Chambers to contract in the correct order </li></ul>
  26. 26. Sinoatrial Node <ul><li>The Sinoartrial Node is in the Right Atrium wall </li></ul><ul><li>The Sinoarteral Node causes the Atriums to contract pushing blood into the ventricles </li></ul><ul><li>The Sinoarteral Node is also known as the “Pacemaker” </li></ul>
  27. 27. Atrioventricular Node <ul><li>The Atrioventricular Node is in the walls between the Right Atrium and Right Ventricle </li></ul><ul><li>The Atrioventricular Node causes the Ventricles to contract </li></ul><ul><li>Blood leaves the Right Ventricle and goes through the Right and Left Pulmonary Arteries into the Lungs </li></ul>
  28. 28. Heart Valves <ul><li>Heart Valves are created in a way that blood can only go “One Way” </li></ul><ul><li>Blood should not ever flow backwards </li></ul><ul><li>The Heart Valves should have “integrity” </li></ul><ul><li>Or be “blood proof” </li></ul>
  29. 29. Tricuspid Valves <ul><li>Tricuspid Valves are found between the Ventricles and the Atriums </li></ul><ul><li>Tricuspid Valves have three folds of tissue </li></ul><ul><li>There is not very much pressure exerted on these Valves because blood does not move very far </li></ul>
  30. 30. Semilunar Valves <ul><li>You have a Semilunar Valve between the Ventricles and the Blood Vessels leaving the Heart </li></ul><ul><li>The Pulmonary Valve and the Aortic Valves are Semilunar type Valves </li></ul><ul><li>Semilunar Valves have two folds of tissue </li></ul>

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