Heart Is Like A Wheel Linda Ronstadt

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=MPZ_Am4HgQA

Check out my videos on all body systems, for example this series is on the nervous system, https://www.youtube.com/watch?v= • The electrical activity for the contraction of the heart is initiated by the: • a. sinoatrial node • b. atrioventircular node • c. medulla oblongata • d. myocytes • The only point of electrical conduction between the atria and the ventricles is provided by the; • a. Sinoatrial node • b. Atrioventricular node • c. Atrioventricular bundle • d. Purkinje fibres • The electrical impulses from the atrial myocardium are collected by the • a. Sinoatrial node • b. Atrioventricular node • c. Atrioventricular bundle • d. Purkinje fibres • Sympathetic stimulation of the heart will • a. Increase heart rate • b. Reduce heart rate • c. Have no effect on heart rate • d. Reduce stroke volume • Parasympathetic stimulation of the heart is provided via the; • a. Phrenic nerves • b. Thoracic spinal nerves • c. Cervical spinal nerves • d. Vagus nerve

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