Description

a increases b decreases
3. Parasymphathetic nervous system heart rate.
a increases b decreases [01]
4. Vagus nerves are part of the nervous system.
a Parasymphathetic
b Symphathetic
5. Sinoatrial(SA) node generates action potentials at a frequency of 100 beats per minute eventhough the observed average heart beat normally is around 70 beats per minute. This is result of the push-pull system we discussed. In terms of degree of influence, which of the following is [01]
true:
a Parasymphathetic nervous system has slightly more influence over symphathetic
b Symphathetic nervous system has slightly more influence over parasymphathetic
c Both systems are equally influential
d None of the above
6. In your activity 1, you characterized the refractory period of the heart. This involved applying stimuli at different points of time. The reponse changed depending on ’where’/’when’ you [01]
applied the stimulus. The refractory period lasted between: [02]
a Beginning of articular contraction to beginning of ventricular contraction
b Beginning of ventricular contraction to peak of ventricular contraction
c Peak of ventricular contraction to end of ventricular relaxationd None of the above

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