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Check In. Please draw a rough sketch of a human heart and label the four chambers. [4]. Homework. Study Biology for 20 minutes. Check In. Put these in order as blood travels through the body: Aorta Left atrium Pulmonary vein Lung capillaries Left ventricle Pulmonary artery. Homework.

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Check In

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  1. Check In Please draw a rough sketch of a human heart and label the four chambers. [4] Homework Study Biology for 20 minutes.

  2. Check In Put these in order as blood travels through the body: Aorta Left atrium Pulmonary vein Lung capillaries Left ventricle Pulmonary artery Homework Study Biology for 20 minutes.

  3. Check In Outline the path of a blood cell from the lungs to a cell in the finger using sequencing language. [6] Homework Study Biology for 20 minutes.

  4. Review: Circulation Anatomy 5 5 4 1. Vena cava 2. Right atrium 3. Right ventricle 4. Pulmonary artery 5. Lung capillaries 6. Pulmonary vein 7. Left atrium 8. Left ventricle 9. Aorta 10. Systemic capillaries 11. valves 1 6 7 2 9 3 8 11 10

  5. Capillaries of head and forelimbs Anterior vena cava Pulmonary artery Aorta Pulmonary artery 9 6 7 3 3 8 Capillaries of right lung Capillaries of left lung 2 4 11 Pulmonary vein Pulmonary vein Left atrium 5 1 Right atrium 10 Left ventricle Right ventricle Aorta Posterior vena cava Capillaries of abdominal organs and hind limbs Another look at human circulation

  6. Which numbers show areas where blood is oxygen-rich? Oxygen-poor? 5 5 4 Oxygen-rich: 6, 7, 8, 9 1 6 7 2 9 Oxygen-poor: 1, 2, 3, 4 3 8 11 10

  7. Circulatory System: Practice • A blood cell that starts in the small intestine moves nutrients to the heart via the __. • It enters the heart in the __. • Next, it is pumped to the __ and then into the __. • It passes through the __ before moving to the __. • The blood cell then returns to the heart in the __. • It is pumped to the __ and leaves the heart via the __, where it can be sent anywhere in the body.

  8. “Each day your heart beats about 100,000 times, circulating blood through nearly 96,000 kilometers of blood vessels--roughly one-quarter of the distance to the moon. Over 70 years, your heart will beat about 2.5 billion times.” Notes – Human Heart

  9. The Human Heart Right Atrium Right Ventricle Left Atrium Left Ventricle 3 1 2 4

  10. The Human Heart Right Atrium Right Ventricle Left Atrium Left Ventricle Superior Vena Cava Inferior Vena Cava Pulmonary Arteries (2) Pulmonary Veins (4) Aorta Atrio-Ventricular (AV) Valves (2) Semi-Lunar Valves 7 9 7 5 3 1 8 8 11 11 10 10 6 2 4

  11. The Human Heart: Oral Practice • A blood cell that starts in the small intestine moves nutrients to the heart via the __. • It enters the heart in the __. • Next, it is pumped through a __ to the __. • From there it travels through a __ and into the __. • It passes through the __ before moving to the __. • The blood cell then returns to the heart in the __. • It is pumped through a second __ into the __. • The blood cell finally leaves the heart through a second __ into the __ where it can be sent anywhere in the body.

  12. The heartbeat cycle • Each cycle equals one heartbeat. • The cycle repeats: • Atria and ventricles relax and fill with blood • Both atria contract to force blood into ventricles. • Both ventricles contract to force blood into aorta and pulmonary arteries.

  13. Heart Rate • Heart rate or Pulsethe number of heart beats in one minute. • Arteries stretch each time ventricles contract. • Heart Beat: caused by closing of valves. Typically “lub-dup, lub-dup.” • Lub = closing of A.V. valves. • Dup = closing of Semilunar valves. • Heart murmurs: hissing caused by valve defects.

  14. The Human Heart: Written Practice • A blood cell that starts in the small intestine moves nutrients to the heart via the __. • It enters the heart in the __. • Next, it is pumped through a __ to the __. • From there it travels through a __ and into the __. • It passes through the __ before moving to the __. • The blood cell then returns to the heart in the __. • It is pumped through a second __ into the __. • The blood cell finally leaves the heart through a second __ into the __ where it can be sent anywhere in the body.

  15. I  Quizzies… 1 7 8 • Superior vena cava • Right pulmonary vein • Right atrium • R. atrio-ventricular (a.v.) valve • Right ventricle • Inferior vena cava • Aorta • Pulmonary artery • Semi-lunar valves • Left pulmonary vein • Left atrium • Left a.v. valve • Septum • Left ventricle 9 2 10 11 12 3 13 4 14 5 6

  16. Check Out Homework Please draw a rough sketch of a human heart and label the 4 chambers and the 4 tubes that enter and leave the heart. [8] Study Biology for 20 minutes.

  17. Check Out Homework Outline how the heart beats. [3] Study Biology for 20 minutes.

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