BTEC Sport - Nervous Control and Responses of Heart

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Across
  1. 1. A specialised system of cardiac cells that conduct electrical activity down the septum of the heart and to the Purkinje fibres
  2. 4. A specialised bundle of cardiac cells that receive electrical activity from the SA node and pass it down the bundle of His
  3. 6. A cluster of cardiac cells that act as a natural pacemaker and initiate the heart's electrical activity
  4. 7. _______ receptors located in the vascular system that detect changes in blood pH and carbon dioxide concentration
  5. 11. A hormone released from the adrenal gland during exercise that increases heart rate and initiates vasodilation
  6. 12. ________rise is an increase in heart rate response shortly before exercise due to the release of adrenaline
  7. 13. ________ output is the volume of blood pumped out of the heart per minute
Down
  1. 1. ________ pressure is the continual physical force that the blood exerts on the walls of the arteries
  2. 2. A branch of the autonomic nervous system that is associated with slowing down heart rate
  3. 3. ________ volume is the volume of blood pumped out of the heart per beat
  4. 5. _________ fibres A specialised branching system of cardiac cells that spread electrical signals received from the bundle of His throughout the walls of the ventricles
  5. 8. A branch of the autonomic nervous system that is associated with the 'fightor-flight' response
  6. 9. ________ rate is the number of times the heart beats per minute
  7. 10. ________ receptors located in the vascular system that detect changes in blood pressure