Bioscience - Module 3

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Across
  1. 2. The second heart sound, and is shorter and sharper. The onset of ventricular systole, or relaxation.
  2. 10. The --- system has 5 parts. In order is the: Sinoatrial node, Atrioventricular node, Atrioventricular bundle, Left and right bundles, and Purkinje Fibres.
  3. 13. This equates to 55% of total blood volume, and is the liquid part of blood.
  4. 14. These cells equate to 45% of blood volume and are red due to hemoglobin. Transports oxygen to and Carbon dioxide away from the cells. Have no nucleus or organelles.
  5. 16. The --- ventricle does the systemic circuit. It is thicker and round.
  6. 17. The pulse site by the elbow joint.
  7. 19. A thick wall rich in fibers and smooth muscle that transports blood away from the heart. Highest blood pressure.
  8. 20. Opposition to the flow of blood through vessels.
  9. 22. Blood --- is the thickness or stickiness of blood. The greater the thickness, the increased resistance and difficulty of blood flow.
  10. 23. The --- circuit are the blood vessels that carry blood to and from the lungs.
  11. 24. The first heart sound. Is longer and louder. The onset of ventricular diastole, or contraction.
  12. 26. The --- circuit are the blood vessels that carry blood to and from body tissue.
Down
  1. 1. The force exerted on a vessel wall by the blood as it is pumped by the heart. Ventricular contraction is the systolic and relaxation is the diastolic pressure. Measured in mm/hg.
  2. 3. The heart has four valves: Pulmonary, Aortic, --- and Tricuspid.
  3. 4. The coronary --- is where all the veins of the heart drain. This opens directly to the right atrium for blood supply.
  4. 5. The smallest arteries whose diameter controls blood flow. Dictates blood flow in capillaries.
  5. 6. The volume of blood flowing through the blood vessels or organs in a given time. Measured using ml/min.
  6. 7. The smallest veins. Blood flowing out of the capillaries then enter this.
  7. 8. The --- ventricle does the pulmonary circuit and is the thinner ventricle out of the two.
  8. 9. This is the blood supply to the heart muscle and supplies oxygen to the muscle cells.
  9. 11. The smallest blood vessels where gas exchange takes place. Single-cell thick wall. Low blood pressure.
  10. 12. The ventricular --- is also known as the filling. Blood enters both atria and open Tri and Bi valves, entering the ventricles and closing the semilunar valve.
  11. 15. The ventricular --- makes the ventricles contract so blood exits the heart and atria relaxs. Tri and Bi valves close and semilunar valve opens and the cycle restarts.
  12. 18. The most common site for pulse taking. On the wrist.
  13. 21. The fourth heart valve. Pulmonary, Aortic, Bicuspid and ---.
  14. 25. A thin wall that has valves present. Transports blood to the heart. Low blood pressure.