Question

Choose the correct sequence of events that occurs post-hemorrhage

Select one:

a. increased baroreceptor firing, ­ increased PNS activity, increased capillary filtration, ­increased kidney water loss

b. decreased baroreceptor firing, ­ increased SNS activity, decreased capillary filtration, ­increased water reabsorption in kidney

c. increased baroreceptor firing, ­ increased SNS activity, decreased capillary filtration, ­increased water reabsorption in kidney

d. decreased mean arterial pressure, increased heart rate, increased capillary reabsorption, decreased kidney water excretion

Answer 1

Correct answer: option c - increased baroreceptor firing, increased SNS (sympathetic nervous system) activity, decreased capillary filtration and increased water reabsorption in the kidney

Explanation:

• Subarachnoid hemorrhage and intracerebral hemorrhage causes autonomic dysfunction syndrome.
• This is characterized by increase sympathetic hyperactivity.
• There cause tachycardia and vasoconstriction
• Increase vasocontraction of the afferent arteriole of the glomerulus reduces the GFR.
• Therefore, there is a decrease in the capillary filtration
• There is also increase secretion of anti-diuretic hormone.
• This increases water retension and increases sweating