Respuesta :
A decrease in tissue metabolism results in an increase in arteriole resistance. Thus the correct answer is option (D).
GFR and glomerular capillary hydrostatic pressure both rise in response to an increase in afferent arteriolar diameter (a decrease in resistance). The opposite is true when the diameter of afferent arterioles is decreased. As a result, variations in afferent arteriolar diameter can affect GFR.
For instance, the rate of filtration through a certain segment of the nephron will likewise increase by 20% if the diameter of one of your afferent arterioles increases by 20%. The rate of filtration through that nephron segment will likewise decrease by 20% if the diameter of another afferent arteriole reduces by 20%. As a result, distinct afferent arterioles' varying sizes may affect GFR in various ways.
Small arteries called afferent arterioles to enter each glomerulus before branching out into the surrounding renal tissue. With each heartbeat, they control the flow of blood into the glomeruli by contracting or expanding in response to the requirement for blood to reach the glomeruli. A minor increase in pressure will induce afferent arterioles to widen, allowing more blood to enter the glomeruli with each heartbeat. This is because afferent arterioles are extremely sensitive to pressure changes within their artery walls.
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