Urinary System Quiz A

An increase in the permeability of the cells of the collecting tubule to water is due to a(n) ________.

• decrease in the production of ADH

• increase in the production of ADH

• increase in the production of aldosterone

• decrease in the concentration of the blood plasma

The path urine takes after it is formed until it leaves the body is the urethra, urinary bladder, and finally the ureter.

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The functional and structural unit of the kidneys is the ________.

• nephron

• nephron loop

• glomerular capsule

• capsular space

The urinary bladder is composed of ________ epithelium.

• transitional

• simple squamous

• stratified squamous

• pseudostratified columnar

The position of the kidneys behind the peritoneal lining of the abdominal cavity is described by the term retroperitoneal.

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The kidneys are stimulated to produce renin ________.

• when the peritubular capillaries are dilated

• when the pH of the urine decreases

• by a decrease in the blood pressure

• when the specific gravity of urine rises above 1.10

Which of the choices below is NOT a function of the urinary system?

• helps maintain homeostasis by controlling the composition, volume, and pressure of blood

• regulates blood glucose levels and produces hormones

• maintains blood osmolarity

• eliminates solid, undigested wastes and excretes carbon dioxide, water, salts, and heat

Tags

NGSS.HS-LS1-3

If the GFR [glomerular filtration rate] is too low, needed substances may pass so quickly through the renal tubules that they are not absorbed and instead are lost in the urine.

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Which of the following is incorrect?

• The kidneys produce a large volume of dilute urine when overhydrated.

• The kidneys produce a small volume of concentrated urine when dehydrated.

• Urine concentration and volume are determined by countercurrent mechanisms

• The concentration of urine is lower when urine volume is reduced.

Which of the following acts as the trigger for the initiation of micturition (voiding/urinating)?

• the stretching of the bladder wall

• motor neurons

• the pressure of the fluid in the bladder

• the sympathetic efferents