Exam 20: Urinary System

Sympathetic nerve impulses usually cause proportional degrees of vasodilation in the afferent and efferent arterioles.

The juxtaglomerular apparatus regulates the filtration rate by ________.

Water is reabsorbed throughout most of the renal tubule by the process of ________.

If the osmotic pressure of the blood plasma is decreased, the glomerular filtration rate is increased.

The organs of the urinary system are

Kidney shrinkage with age is due to

In which of the following regions of the nephron is water actively transported?

Select the sequence that indicates the parts of a renal tubule in the correct sequence from beginning to end.

During urine formation, some substances move from the plasma in the peritubular capillary into the renal tubule by the process called ________.

Michael is 26 years old. He becomes dehydrated after a long run if he has not drunk enough. His infant son Sean, however, becomes dehydrated fairly frequently. This difference in susceptibility to dehydration is because

The detrusor muscle is in the

Liam is a body builder and frequently consumes protein powder as part of his fitness regimen. He consumes more protein than his body actually uses. What happens to the excess protein?

A nephron consists of

At rest, the kidneys receive about a quarter of the blood coming from the heart.

Karl is around 60 years old. He begins to notice that he can't control his bladder as efficiently lately. Leakage of urine is starting to become common. He might have

During development, the embryo is injected with anti-VEGF (which negates VEGF functions). Which of the following effects will occur? 

Which choice describes the countercurrent mechanism of the nephron loop?

Active transport mechanisms have limited transport capacities because the renal tubule is not very permeable to molecules.

The efferent arteriole supplies blood to the capillary of the glomerulus.

Hemodialysis involves