Explain the difference between tonic and antagonistic control of homeostatic balance. Fig. 6.15 Give two examples of each. ANTAGONISTIC CONTROL(b) Antagonistic control uses differentsignals to send a parameter inopposite directions. In thisexample, antagonisticneurons control heart rate:Stimulation by sympathetic nerves increases heart rate.Heartbeatssome speed it up, whileothers slow it down.23Time (sec) –SympatheticneuronParasympatheticneuronStimulation by parasympathetic nerves decreases heart rate.Heartbeats23Time (sec)? FIGURE QUESTIONWhat heart rates (in beats/min)are shown on the two ECGtracings? TONIC CONTROL(a) Tonic control regulates physiological parametersin an up-down fashion. The signal is always presentbut changes in intensity.Decreased signal ratevessel dilatesChange insignal rateTimeElectricalIf the signal rate decreases,the blood vessel dilates.signalsfromTimeneuronderate signal rateresults in a blood vesselof intermediate diameter.Increased signal ratevessel constrictsTimeIf the signal rate increases,the blood vessel constricts.

From the word tonic itself we understood that tonic means it's a positive or feel good thing. Where…

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Explain the difference between tonic and antagonistic control of homeostatic balance.

Phlebotomy Essentials

6th Edition

ISBN:9781451194524

Author:Ruth McCall, Cathee M. Tankersley MT(ASCP)

Publisher:Ruth McCall, Cathee M. Tankersley MT(ASCP)

Chapter1: Phlebotomy: Past And Present And The Healthcare Setting

Section: Chapter Questions

Problem 1SRQ

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