How are the processes of reabsorption and secretion related? A) Materials move in opposite directions: reabsorption moves materials into the blood, whereas secretion removes them from the blood. B) They both involve movement of material from the tubular fluid into the blood. C) Materials move in opposite directions: secretion moves materials into the blood, whereas reabsorption removes them from the blood. D) They both involve movement of material from the blood into the tubular fluid.

What is the appropriate compensatory response to an acid-load to the blood? A) Decrease renal H+ excretion B) Increase respiration to lower CO2 C) Decrease respiration to raise CO2 D) Decrease renal bicarbonate production

When dehydration occurs, (a) water reabsorption at the kidneys accelerates.(b) fluids are reabsorbed from the interstitial fluid. (c) blood osmotic pressure increases. (d) a, b, and c are correct.

If a positive ion is reabsorbed across a kidney membrane: A) A negative ion must be retained in reserve at the membrane B) A negative ion must be secreted across the membrane C) The same positive ion must be passively moved across the membrane D) A different positive ion must be secreted across the membrane E) None of these answers is correct

The kidneys are stimulated to produce renin_____ b) when the sympathetic nervous system is activated c) when the pH of the urine decreases d) by an increase in the blood pressure e) when the peritubular capillaries are dilated

As the filtrate moves through the tubules of the nephron, solutes and ions are either reabsorbed from or secreted into the tubule.  A) Describe two things reabsorbed from the proximal convoluted tubule.  B) Describe one thing that is secreted into the proximal convoluted tubule. C) Describe two things that are reabsorbed from the distal convoluted tubule.  D) Describe two hormones that act at the distal convoluted tubule cells.

Which of the following substances does the body normallyretain? Which does it normally excrete? (1) glucose, (2) sodiumions, (3) bicarbonate ions, (4) acids

1. A patient faints if he gets up out of bed too quickly. Which one of thefollowing events would most likely to account for such fainting?A)Reduced baroreflex function.B)Exaggerated increase in renal sympathetic nerve activity.C)A baroreflex-mediated reduction in heart rate.D)Increased blood pressure.E)Activation of the Cushing response.

If the glomerular filtration rate is too low: A) The filtrate passes through the nephron tubules without secretion B) Needed substances cannot be reabsorbed quickly enough and are lost in the urine C) Little or nothing is reabsorbed and the urine is high in ammonia and uric acid D) None of these answers is correct E) The filtrate passes through the nephron tubules more quickly than normal

An increase on blood pressure in the afferent arteriole of the kidney will result in All of the fallowing Except: A) an increase in GFR B) an increase in pressure in glomerular capillaries C) an increase in Renin Secretion D) somewhat greater output of urine