Deck 27: Urinary System

Question 1

From deep to superficial,the protective layers on the kidney are the

A)fibrous capsule,perinephric fat,renal fascia,paranephric fat.
B)renal corpuscle,perinephric fat,renal fascia,paranephric fat.
C)renal fascia,paranephric fat,renal corpuscle,perinephric fat.
D)renal fascia,perinephric fat,fibrous capsule,paranephric fat.
E)fibrous capsule,paranephric fat,renal fascia,perinephric fat.

Answer 1

A

Question 2

The first structure in the kidney to collect newly formed urine is the

A)renal capsule.
B)minor calyx.
C)renal pelvis.
D)renal sinus.
E)renal cortex.

Answer 2

B

Question 3

Place the regions of the nephron in the correct order for the process of urine formation.
A: Capsular space of glomerulus
B: Nephron loop
C: Collecting duct
D: Distal convoluted tubule
E: Proximal convoluted tubule

A)a,c,b,e,d
B)e,d,b,a,c
C)b,e,c,d,a
D)b,d,c,e,a
E)a,e,b,d,c

Answer 3

a,e,b,d,c

Question 4

Which is not a function of the urinary system?

A)Regulation of blood volume
B)Excretion of wastes
C)Regulation of erythrocyte production
D)Regulation of lymphocyte production
E)Storage of urine

Question 5

Which is not correct regarding nephrons?

A)The renal corpuscle includes the glomerulus and the glomerular capsule.
B)The renal tubule is composed of the proximal convoluted tubule,nephron loop,and distal convoluted tubule.
C)The nephron is the functional filtration unit in the kidney.
D)Eighty-five percent of nephrons are cortical nephrons.
E)The renal corpuscle may be located in the renal cortex or renal medulla.

Question 6

Which organ is not part of the urinary tract?

A)Kidney
B)Ureter
C)Urinary bladder
D)Urethra
E)No exceptions; all of these organs are part of the urinary tract.

Question 7

Which is not true of filtration and the structures that perform the process?

A)The process occurs due to pressure differences across the filtration membrane.
B)Filtrate collects in the capsular space before moving to the renal tubule.
C)The visceral wall of the glomerular capsule consists of specialized cells called pedicels.
D)The capillary endothelium of the glomerulus is fenestrated.
E)Blood to be filtered enters the renal corpuscle at the vascular pole.

Question 8

The average adult kidney weighs about 100 grams and measures about

A)12 cm long,6.5 cm wide,and 2.5 cm thick.
B)8 cm long,4 cm wide,and 1.5 cm thick.
C)15 cm long,10.5 cm wide,and 4.5 cm thick.
D)8 cm long,10.5 cm wide,and 2.5 cm thick.
E)12 cm long,2.5 cm wide,and 8 cm thick.

Question 9

Filtration occurs because

A)the glomerulus is leaky.
B)the afferent arteriole is wider in diameter than the efferent arteriole.
C)the capillary wall is not completely ensheathed by the visceral layer of the glomerular capsule.
D)the filtration slits allow materials from the blood plasma to enter the capsular space.
E)All of the choices are correct.

Question 10

Which portion of the renal tubule is described as having simple cuboidal epithelium with only a sparse brush border of microvilli?

A)Proximal convoluted tubule
B)Distal convoluted tubule
C)Ascending limb of nephron loop
D)Descending limb of nephron loop
E)Collecting duct

Question 11

An adult human kidney typically contains ______ renal pyramid(s).

A)2 to 5
B)8 to 15
C)16 to 24
D)1
E)30 to 40

Question 12

Where are the renal pyramids located within the kidney?

A)Renal cortex
B)Renal sinus
C)Renal pelvis
D)Renal papilla
E)Renal medulla

Question 13

Which is not correct regarding the kidneys?

A)The kidneys are retroperitoneal.
B)The kidneys are surrounded by a fibrous renal capsule.
C)The kidneys are cushioned and insulated by adipose tissue.
D)The indented medial surface of the kidney is called the renal papilla.
E)The kidney is composed of an inner renal medulla and an outer renal cortex.

Question 14

Which is the correct sequence of arteries that a drop of blood would flow through as it entered the kidney and moved toward a glomerulus?

A)Segmental artery - interlobar artery - interlobular artery - renal artery - arcuate artery
B)Interlobar artery - segmental artery - interlobular artery - renal artery - arcuate artery
C)Renal artery - interlobar artery - segmental artery - arcuate artery - interlobular artery
D)Renal artery - segmental artery - interlobar artery - arcuate artery - interlobular artery
E)Arcuate artery - interlobular artery - segmental artery - interlobar artery - renal artery

Question 15

The capillaries of the glomerulus differ from other capillary networks in the body because they

A)carry only deoxygenated blood.
B)drain into an arteriole instead of a venule.
C)contain no endothelium.
D)absorb nutrients from the glomerular capsule.
E)secrete mucus.

Question 16

An obstruction in the glomerulus would affect the flow of blood into the

A)renal artery.
B)proximal convoluted tubule.
C)efferent arteriole.
D)distal convoluted tubule.
E)afferent arteriole.

Question 17

Urine formed in the pyramids must flow within the kidney to the ureter.Which structure is not part of the transport path within the kidney that carries urine to the ureter?

A)Renal sinus
B)Major calyx
C)Renal pelvis
D)Minor calyx
E)No exceptions; all choices transport urine.

Question 18

The active transport of solutes out of the blood and into the tubular fluid is called

A)filtration.
B)tubular reabsorption.
C)tubular secretion.
D)fenestration.
E)diffusion.

Question 19

Which step(s)in the process of urine formation occur in the renal tubule?

A)Filtration
B)Secretion
C)Reabsorption
D)Filtration,secretion,and reabsorption
E)Secretion and reabsorption

Question 20

Blood vessels that make their way from the renal hilum to the renal cortex must travel through extensions of the cortex called renal

A)trabeculae.
B)pyramids.
C)sinuses.
D)columns.
E)calyces.

Question 21

What is the value of transitional epithelium in the urinary system?

A)Its cilia help propel the urine.
B)It can contract to produce peristalsis.
C)It allows distension.
D)It protects against trauma.
E)It provides cushioning.

Question 22

How does aldosterone affect urine formation?

A)Increases the reabsorption of sodium and water by the distal convoluted tubule
B)Increases the secretion of sodium and potassium ions from the nephron loop
C)Decreases the reabsorption of sodium and chloride ions by the distal convoluted tubule
D)Increases the secretion of water by all regions of the renal tubule
E)Decreases the reabsorption of electrolytes,glucose,and plasma proteins by the proximal convoluted tubule

Question 23

The spongy urethra

A)is found only in males.
B)is the longest portion of the urethra.
C)is encased within the corpus spongiosum.
D)is lined proximally by pseudostratified columnar epithelium and distally by stratified squamous epithelium.
E)All of the choices are correct.

Question 24

Which portion of the renal tubule reabsorbs electrolytes,plasma proteins,nutrients,vitamins,and water?

A)Proximal convoluted tubule
B)Distal convoluted tubule
C)Ascending limb of nephron loop
D)Descending limb of nephron loop
E)Collecting duct

Question 25

Which layer is not found in the wall of the ureter?

A)Adventitia
B)Muscularis
C)Mucosa
D)Submucosa
E)No exceptions; all layers are found in the wall of the ureter.

Question 26

Which layer is not found in the wall of the urinary bladder?

A)Adventitia
B)Muscularis
C)Mucosa
D)Submucosa
E)No exceptions; all layers are found in the wall of the urinary bladder.

Question 27

Which gives the correct order for the structures through which newly formed urine is transported once it leaves the nephron?

A)Collecting duct - collecting tubule - papillary duct - minor calyx
B)Minor calyx - collecting tubule - collecting duct - papillary duct
C)Papillary duct - collecting tubule - collecting duct - minor calyx
D)Collecting tubule - collecting duct - papillary duct - minor calyx
E)Collecting tubule - papillary duct - minor calyx - collecting duct

Question 28

Which is not correct regarding the juxtaglomerular apparatus?

A)The macula densa cells monitor electrolyte concentrations in tubular fluid.
B)The macula densa cells are modified epithelial cells of the distal convoluted tubule.
C)The juxtaglomerular cells are modified smooth muscle cells of the efferent arteriole.
D)The juxtaglomerular cells release renin.
E)Renin activates the renin-angiotensin pathway,resulting in aldosterone production.

Question 29

Where in the urinary tract is transitional epithelium found?

A)Urinary bladder
B)Urethra
C)Ureters,urinary bladder,and prostatic urethra
D)Ureters
E)Ureters and urinary bladder

Question 30

Micturition

A)is another name for urination.
B)is a reflex triggered by stretch receptors in the urinary bladder.
C)requires the opening of two sphincters.
D)requires contraction of the muscularis layer of the urinary bladder.
E)All of the choices are correct.

Question 31

The muscularis layer of the urinary bladder is commonly called the _____ muscle.

A)detrusor
B)micturition
C)trigone
D)extrusor
E)extrinsic

Question 32

Which is not correct regarding the urinary bladder?

A)There are two ureteral openings.
B)The inferior portion of the bladder is called the apex.
C)The bladder is held in place by the median umbilical ligament.
D)The mucosa has rugae for distension.
E)The peritoneum covers only the superior surface of the bladder.

Question 33

Blood is supplied to the urinary bladder by branches of the

A)internal iliac arteries.
B)external iliac arteries.
C)inferior mesenteric arteries.
D)median sacral artery.
E)deep ilial circumflex artery.

Question 34

The external urethral sphincter

A)surrounds the external urethral orifice.
B)is composed of smooth muscle fibers.
C)is controlled by the somatic nervous system.
D)opens before the internal urethral sphincter during the micturition reflex.
E)All of the choices are correct.

Question 35

The ureters

A)are intraperitoneal.
B)average 12 cm in length.
C)are fibromuscular tubes.
D)extend from the renal hilum to the anterolateral wall of the urinary bladder.
E)All of the choices are correct.

Question 36

Which does not enter or exit the kidney at the hilum?

A)Renal artery
B)Ureter
C)Renal vein
D)Renal plexus
E)No exceptions; all choices enter or exit the kidney at the hilum.

Question 37

Urine flow from the renal pelvis to the urinary bladder is produced by

A)ciliary action in the renal pelvis.
B)suction from the urinary bladder.
C)peristalsis of the ureters.
D)hydrostatic pressure from the small intestine.
E)contraction of the detrusor muscle.

Question 38

Which is not correct regarding the innervation of the kidney?

A)Parasympathetic innervation is from the vagus nerve.
B)The kidney is served by the renal plexus.
C) Sympathetic innervation is from segments T10-T12 of the spinal cord.
D)Sympathetic stimulation causes vasoconstriction of the renal blood vessels.
E)Parasympathetic stimulation decreases the rate of filtrate formation.

Question 39

Put the portions of the male urethra in the correct order,from the urinary bladder to the exterior.
A: Spongy part
B: Urethral orifice
C: Prostatic part
D: Membranous part

A)b,c,a,d
B)c,a,d,b
C)b,c,d,a
D)c,d,a,b
E)b,a,c,d

Question 40

Which is not one of the changes in the urinary system due to aging?

A)Reduced blood flow to the kidneys
B)Decrease in number of functional nephrons
C)Decreased response to aldosterone and ADH
D)Decreased glomerular filtration rate
E)Gradual increase in kidney size due to fluid retention

Question 41

The parasympathetic innervation to the kidney has no known effect.

Question 42

Of the excretory organs that form during development,which one ultimately forms the adult kidney?

A)Mesonephros
B)Metanephros
C)Pronephros
D)Renanephros
E)Uretonephros

Question 43

This figure shows a renal corpuscle.The two structures indicated by number 3 collectively form the

A)Macula densa
B)Juxtaglomerular apparatus
C)Corticomedullary junction
D)Juxtamedullary junction
E)Vasa recta

Question 44

The juxtaglomerular apparatus functions to regulate blood pressure.6-18-2013

Question 45

If blood oxygen levels are reduced,cells in the kidney respond by secreting the hormone _________________.

Question 46

In anatomic position,the left kidney is inferior to the right kidney.

Question 47

Each renal papilla empties into only one minor calyx.

Question 48

The urethra and urinary bladder develop from a structure called the

A)allantois.
B)urachus.
C)cloaca.
D)urogenital sinus.
E)urethral bud.

Question 49

The developing kidneys are able to produce and expel urine by week ______ of development.

A)5
B)10
C)15
D)20
E)25

Question 50

The arrangement of circular and longitudinal muscle fibers in the muscularis of the ureter is opposite to that found in the GI tract,where the circular layer is the inner layer.

Question 51

Sympathetic fibers inhibit micturition.

Question 52

The pattern of venous drainage in the kidney differs from the arterial supply in that there are no arcuate or segmental veins.

Question 53

Coordinated movements of the microvilli in the proximal convoluted tubule assist in the propulsion of tubular fluid toward the nephron loop.

Question 54

This figure shows a renal corpuscle.What structure does number 4 indicate?

A)Efferent arteriole
B)Renal artery
C)Peritubular capillary
D)Afferent arteriole
E)Efferent venule

Question 55

The internal urethral sphincter is formed by skeletal muscle fibers of the urogenital diaphragm.

Question 56

The urinary and reproductive systems develop from

A)mesoderm.
B)ectoderm.
C)endoderm.
D)mesoderm and ectoderm.
E)endoderm and ectoderm.

Question 57

This figure shows a renal corpuscle.What structure does number 1 indicate?

A) Distal convoluted tubule (DCT)
B)Collecting duct
C)Nephron loop
D) Proximal convoluted tubule (PCT)
E)Papillary duct

Question 58

Peritubular capillaries are associated with the convoluted tubules,while vasa recta are associated with the nephron loop.

Question 59

Which is not of ureteric bud origin?

A)Renal pelvis
B)Collecting duct
C)Minor calyx
D)Distal convoluted tubule
E)Ureter

Question 60

This figure shows a renal corpuscle.What type of cell does number 2 indicate?

A)Podocyte
B)Pedicel
C)Cuboidal epithelial cell
D)Squamous epithelial cell
E)Columnar epithelial cell

Question 61

The inability to control the expulsion of urine is called ________.

Question 62

The internal space within each kidney that houses the blood vessels,lymphatic vessels,nerves,calyces,and renal pelvis is called the renal ____________.

Question 63

The ball of capillaries in the renal corpuscle is called the ________________.

Question 64

The concave medial border of the kidney is called the __________.

Question 65

Urination is triggered by a complex sequence of events called the ___________ reflex.

Question 66

Each kidney contains more than a million "functional units" called ___________.

Question 67

When the body is dehydrated,secretion of the pituitary hormone that is abbreviated _______________ causes increased reabsorption of water from the collecting ducts.

Question 68

The triangular area within the urinary bladder that is delimited by the openings of the ureters and the urethra is called the __________.

Question 69

The juxtaglomerular cells release the enzyme ______________ when the macula densa cells detect low blood volume or solute concentration.

Question 70

In males,the proximal portion of the urethra is called the __________ urethra.