Question 1

Within the male urethra, how is urine prevented from mixing with semen during ejaculation?

Accepted Answer

A)  Conscious control of a sphincter muscle guarding the bladder opening 
B)  Contraction of the detrusor muscle of the bladder 
C)  By the urinary meatus 
D)  Reflex closure of sphincter muscles guarding the bladder opening 
A)  Conscious control of a sphincter muscle guarding the bladder opening 
B)  Contraction of the detrusor muscle of the bladder 
C)  By the urinary meatus 
D)  Reflex closure of sphincter muscles guarding the bladder opening

Question 2

The kidneys influence secretion of the hormone aldosterone.

Accepted Answer

A) True 
 B)False

Question 3

At the beginning of the "plumbing system" of the urinary system, urine leaving the renal papilla is collected in the cuplike structures called:

Accepted Answer

A)  renal columns. 
B)  renal pyramids. 
C)  calyces. 
D)  ureters. 
A)  renal columns. 
B)  renal pyramids. 
C)  calyces. 
D)  ureters.

Question 4

One factor that influences the hydrostatic pressure of the glomerulus is the difference in diameter between the efferent and afferent arterioles.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following structures does not enter or leave through the hilum of the kidney?

Accepted Answer

A)  Calyx 
B)  Renal artery 
C)  Renal vein 
D)  Ureter 
A)  Calyx 
B)  Renal artery 
C)  Renal vein 
D)  Ureter

Question 6

The tubes of the nephron are about 3 cm long.

Accepted Answer

A) True 
 B)False

Question 7

When compared with most other capillaries in the body, the capillaries in the glomerulus have many more pores.

Accepted Answer

A) True 
 B)False

Question 8

Renin is released in response to a rise in blood pressure in the afferent arteriole.

Accepted Answer

A) True 
 B)False

Question 9

Urine formation involves all the following processes except:

Accepted Answer

A)  filtration. 
B)  catabolism. 
C)  reabsorption. 
D)  secretion. 
A)  filtration. 
B)  catabolism. 
C)  reabsorption. 
D)  secretion.

Question 10

It is true that women suffer from urinary bladder infections more often than men do. Why?

Accepted Answer

Yes, it is true that women suffer from u

Question 11

Which structure of the kidney narrows as it exits the kidney to become the ureter?

Accepted Answer

A)  Renal pyramids 
B)  Renal pelvis 
C)  Renal columns 
D)  Hilum 
A)  Renal pyramids 
B)  Renal pelvis 
C)  Renal columns 
D)  Hilum

Question 12

Creatinine is often measured to determine normal kidney function.

Accepted Answer

A) True 
 B)False

Question 13

Nitrogen wastes are removed only by the urinary system.

Accepted Answer

A) True 
 B)False

Question 14

Aldosterone tends to increase urine volume, thereby promoting water loss.

Accepted Answer

A) True 
 B)False

Question 15

The kidneys are surrounded by fat and are enclosed by the parietal peritoneum.

Accepted Answer

A) True 
 B)False

Question 16

Regarding reabsorption in the proximal tubules, which of the following statements is not true?

Accepted Answer

A)  Sodium is actively transported out of the tubule fluid and into the blood. 
B)  Chloride ions are actively transported into the blood plasma. 
C)  Glucose and amino acids are transported with sodium and passively move out of the tubule fluid by means of the sodium cotransport mechanism. 
D)  About half of the urea present in the tubule fluid passively moves out of the tubule, leaving half the urea to move on to the loop of Henle. 
A)  Sodium is actively transported out of the tubule fluid and into the blood. 
B)  Chloride ions are actively transported into the blood plasma. 
C)  Glucose and amino acids are transported with sodium and passively move out of the tubule fluid by means of the sodium cotransport mechanism. 
D)  About half of the urea present in the tubule fluid passively moves out of the tubule, leaving half the urea to move on to the loop of Henle.

Question 17

Under normal conditions, most nutrients are reabsorbed in which portion of the nephron?

Accepted Answer

A)  Proximal tubule 
B)  Ascending loop of Henle 
C)  Distal tubule 
D)  Collecting tubule 
A)  Proximal tubule 
B)  Ascending loop of Henle 
C)  Distal tubule 
D)  Collecting tubule

Question 18

The collecting duct receives filtrate from many different nephrons.

Accepted Answer

A) True 
 B)False

Question 19

The ion most likely to be reabsorbed after the reabsorption of sodium ions is:

Accepted Answer

A)  potassium. 
B)  chloride. 
C)  phosphate. 
D)  both B and C. 
A)  potassium. 
B)  chloride. 
C)  phosphate. 
D)  both B and C.

Question 20

Blood enters the glomerulus through afferent arterioles.

Accepted Answer

A) True 
 B)False

Exam 42: Urinary System

Within the male urethra, how is urine prevented from mixing with semen during ejaculation?

The kidneys influence secretion of the hormone aldosterone.

At the beginning of the "plumbing system" of the urinary system, urine leaving the renal papilla is collected in the cuplike structures called:

One factor that influences the hydrostatic pressure of the glomerulus is the difference in diameter between the efferent and afferent arterioles.

Which of the following structures does not enter or leave through the hilum of the kidney?

The tubes of the nephron are about 3 cm long.

When compared with most other capillaries in the body, the capillaries in the glomerulus have many more pores.

Renin is released in response to a rise in blood pressure in the afferent arteriole.

Urine formation involves all the following processes except:

It is true that women suffer from urinary bladder infections more often than men do. Why?

Which structure of the kidney narrows as it exits the kidney to become the ureter?

Creatinine is often measured to determine normal kidney function.

Nitrogen wastes are removed only by the urinary system.

Aldosterone tends to increase urine volume, thereby promoting water loss.

The kidneys are surrounded by fat and are enclosed by the parietal peritoneum.

Regarding reabsorption in the proximal tubules, which of the following statements is not true?

Under normal conditions, most nutrients are reabsorbed in which portion of the nephron?

The collecting duct receives filtrate from many different nephrons.

The ion most likely to be reabsorbed after the reabsorption of sodium ions is:

Blood enters the glomerulus through afferent arterioles.

Organization of the Body

Homeostasis

Chemical Basis of Life

Biomolecules

Cell Structure

Cell Function

Cell Growth and Development

Introduction to Tissues

Tissue Types

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Muscle Contraction

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Nerve Signaling

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Autonomic Nervous System

General Senses

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Endocrine Regulation

Endocrine Glands

Blood

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Innate Immunity

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Stress

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Gas Exchange & Transport

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Digestion and Absorption

Nutrition and Metabolism

Fluid and Electrolyte Balance

Acid Base Balance

Male Reproductive System

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Growth and Development

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