Describe two types of blood flow regulation in detail at he level
of the arteriole.
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Describe two types of blood flow regulation in detail at he levelof the arteriole.
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REGULATION OF ARTERIAL BLOOD PRESSURE Arterial blood pressure varies even under physiological conditions However immediately it is brought back to normal level because of the presence of well organized regulatory mechanisms in the body Body has four such regulatory mechanisms to maintain the blood pressure within normal limits A Nervous mechanism or shortterm regulatory mechanism B Renal mechanism or longterm regulatory mechanism C Hormonal mechanism D Local mechanism NERVOUS MECHANISM FOR REGULATION OF BLOOD PRESSURE SHORTTERM REGULATION Nervous regulation is rapid among all the mechanisms involved in the regulation of arterial blood pressure When the pressure is altered nervous system brings the pressure back to normal within few minutes Although nervous mechanism is quick in action it operates only for a short period and then it adapts to the new pressure Hence it is called shortterm regulation The nervous mechanism regulating the arterial blood pressure operates through the vasomotor system Vasomotor System Vasomotor system includes three components 1 Vasomotor center 2 Vasoconstrictor fibers 3 Vasodilator fibers MECHANISM OF ACTION OF VASOMOTOR CENTER IN THE REGULATION OF BLOOD PRESSURE Vasomotor center regulates the arterial blood pressure by causing
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