Effect on ADH, Central blood volume, and ANP after 20 min cold water submersion

Question 1

If a person in cold water for 20 minutes, what is effect on ADH, central blood volume, and ANP?

Answer 1

• Cold temperature: Causes peripheral vasoconstriction and central vasodilation
• Increased central blood volume –> **Lower ADH due to increased blood volume through kidneys
• Increased central blood volme –> leads to atrial stretching, increased preload –> Increased ANP release