Urinary System 2 (11)

A network of peritubular capillaries surrounds the convoluted tubules and nephron loop for the purpose of filtration.

False

The ureters enter the bladder obliquely at the anterolateral corners.

False

Urine drains from the kidney in the following sequence: from the collecting duct to the minor calyx to the major calyx to the renal pelvis and then to the ureter.

True

Which of the following is not normally found in urine? A) urea B) glucose C) uric acid D) creatinine

glucose

Which of the following is not part of the filtration membrane? A) basement membrane B) capillary endothelium C) filtration slit diaphragm D) granular cells

granular cells

The location and length of the urethra are two factors that contribute to the high incidence of urinary tract infections in women.

True

Urine flows from the kidney to the bladder by gravity and peristalsis.

True

Venous structures of the kidney mirror those of the arterial circuit, except for the absence of segmental veins.

True

Which gland sits atop each kidney? A) pancreas B) pituitary C) adrenal D) interlobar gland

adrenal

An increase in the permeability of collecting tubule cells to water is due to A) a decrease in the production of ADH. B) an increase in the production of ADH. C) a decrease in the concentration of solutes in the blood plasma. D) the presence of a salty urine in the bladder.

an increase in the production of ADH.

The external urethral sphincter is located A) at the external urethral orifice. B) at the junction of the bladder wall and urethra. C) at the ureteral orifice. D) at the urogenital diaphragm.

at the urogenital diaphragm.

The left renal vein ________ the right renal vein. A) is shorter than B) is the same length as C) is longer than D) carries less blood than

is longer than

Vessels and nerves enter and leave the kidney through the A) fibrous capsule. B) lateral convex surface. C) inferior surface. D) medial hilum.

medial hilum.

Cup-shaped tubes that enclose the papillae of the pyramids. A) major calyx B) minor calyx C) renal sinus D) renal pelvis E) cortical columns

minor calyx

Which of the following is found exclusively in the renal medulla? A) nephron loop B) cortical radiate arteries C) peritubular capillaries D) proximal convoluted tubules

nephron loop

In the micturition reflex, the detrusor muscle is stimulated to contract by A) sphincter neurons from the brain. B) sympathetic fibers. C) parasympathetic fibers. D) visceral sensory fibers from the vagus.

parasympathetic fibers.

The parts of the nephron whose epithelial cells contain the most mitochondria are the A) renal corpuscle and distal tubule. B) proximal and distal tubules. C) thin segment and glomerular capsule. D) vasa recta and collecting tubules.

proximal and distal tubules.

The part of the nephron whose epithelial cells are most responsible for resorption and secretion is the A) glomerular capsule (podocytes). B) proximal tubule. C) thin segment. D) distal tubule.

proximal tubule.

Which structure(s) is (are) most important for holding the kidney in place in the abdomen? A) renal vessels B) renal ligaments C) renal fascia D) the diaphragm, through its muscle tone

renal fascia

Urine passes through the A) kidney hilum to the bladder to the ureter. B) renal pelvis to the ureter to the bladder to the urethra. C) glomerulus to the ureter to the nephron. D) hilus to the urethra to the bladder.

renal pelvis to the ureter to the bladder to the urethra.

Which of the following conditions is most often seen in elderly males with prostatic hyperplasia? A) urge incontinence B) overflow incontinence C) urinary retention D) stress incontinence

urinary retention

Ladderlike looping blood vessels within the medulla. A) vasa vasorum B) peritubular capillaries C) cortical radiate D) vasa recta E) interlobular

vasa recta

The name of the inferior of the three openings in the trigone of the bladder is the A) ureteric orifice. B) urachus opening. C) internal urethral orifice. D) detrusor.

C) internal urethral orifice.

How much of the fluid filtered by the kidney actually becomes urine? A) 1% B) 10% C) 50% D) 99%

1%

The urinary bladder, when empty, lies within both the abdominal and pelvic cavities.

False (it lies in the pelvic cavity)

The epithelial cells of the distal convoluted tubule have an abundance of absorptive microvilli.

False (there are no microvilli in the kidneys)

The kidneys are located just below lumbar vertebrae L2 and L3.

False (they are higher, T12 to L3)

Why are urinary tract infections more common in females than in males? A) In males the urethra is made up of three regions, whereas in females it is made of only one. B) In females the urethra is attached to the anterior vaginal wall by connective tissue. C) In females the urethra is shorter than in males. D) In males the urethra is shared by the both the reproductive and the urinary systems, whereas in females it is part of the urinary system only.

In females the urethra is shorter than in males.

Which of the following statements about the urinary bladder is false? A) In females, the bladder lies posterior to the uterus but anterior to the rectum. B) The ureters attach to the bladder through oblique posterolateral orifices. C) Two ureteral openings and the internal urethral orifice bound the trigone of the bladder. D) When empty, the bladder lies inferior to the abdominal cavity.

In females, the bladder lies posterior to the uterus but anterior to the rectum.

Which of the following statements about the internal urethral sphincter is false? A) It is a thickening of the detrusor muscle. B) It is located superior to the prostatic urethra in males. C) It is not consciously controlled. D) It is surrounded by the urogential diaphragm.

It is surrounded by the urogential diaphragm.

Based on what you know about the location of the kidneys in the posterior abdominal wall, the hilum of the kidney must be at the level of which vertebra? A) T11 or T12 B) L1 or L2 C) L4 D) T8

L1 or L2

A large fat-filled space within the kidney that also contains the renal pelvis, blood vessels, and nerves. A) sinus B) convoluted tubules C) renal corpuscle D) renal pyramids E) cortical columns

sinus

The longest of the three parts of the male urethra is the A) prostatic. B) membranous. C) spongy urethra. D) neck.

spongy urethra (shaft)

In the juxtaglomerular apparatus, the macula densa belongs to the A) terminal nephron loop. B) glomerulus. C) efferent arteriole. D) visceral layer of the glomerular capsule (podocytes).

terminal nephron loop.

Renin is produced in A) the glomerulus. B) the renal medulla. C) the granular cells. D) glomerular capsules.

the granular cells.

Which of the following is not found in the renal corpuscle? A) the glomerulus B) the nephron loop C) glomerular capsule D) podocytes

the nephron loop

Cortical and juxtamedullary nephrons can be distinguished by the absence of a vasa recta in the cortical nephrons.

True

The kidneys lie behind the ________ cavity. A) abdominal B) pelvic C) thoracic D) cranial

A) abdominal

The function of the collecting duct is to A) contract its muscular walls to expel urine from the cortex. B) determine the final volume and concentration of urine. C) drain blood from the kidney and deliver it to the renal vein. D) transport resorbed water back into the cardiovascular system.

B) determine the final volume and concentration of urine.

The correct sequence of arterial blood flow is the renal artery to the segmental arteries to the interlobar arteries.

True

Which of the following regions of the nephron is most likely to be found in the renal medulla? A) glomerulus B) proximal convoluted tubule C) distal convoluted tubule D) collecting duct

collecting duct

The most superficial layer of the kidney is the A) cortex. B) medulla. C) renal pyramids. D) renal papilla.

cortex.

Which segment of the nephron has a simple squamous epithelium? A) ascending limb of the nephron loop B) descending limb of the nephron loop C) distal convoluted tubule D) proximal convoluted tubule

descending limb of the nephron loop

Before it enters the ureter, urine collects in the A) renal sinus. B) renal pelvis. C) renal cortex. D) renal pyramids.

renal pelvis.

The descriptive term for the location of the kidneys relative to the abdominal cavity. A) retroperitoneal B) intraperitoneal C) extraabdominal D) supraperitoneal E) subcapsular

retroperitoneal

In females, the urinary bladder lies anterior to the vagina and uterus.

True

The descending thin limb of the nephron loop consists of a simple squamous epithelium.

True

The glomerular capsule and the glomerular capillaries together make up the renal corpuscle.

True

The internal urethral sphincter is composed of smooth muscle and is under involuntary control.

True

Blood vessel that contains granular cells involved in blood pressure regulation. A) afferent arteriole B) efferent arteriole C) segmental artery D) macula densa E) extraglomerular mesangial

afferent arteriole

Contraction of this muscle forces urine from the bladder. A) cremaster B) detrusor C) diaphragm D) vesicular E) dartos

detrusor

Which of the following processes does not participate in the production of urine in the kidney? A) filtration B) secretion C) evaporation D) resorption

evaporation

Knot of capillaries that directs blood into the efferent arteriole. A) arcuate arteries B) cortical radiate arteries C) glomerulus D) afferent arterioles E) peritubular capillaries

glomerulus

The mucosal folds in the bladder (rugae) A) act to increase the surface area for absorption. B) thicken the bladder wall so that it does not burst. C) are not present in life, only in cadavers. D) have the same basic function as transitional epithelium—accommodating stretch as the bladder fills.

have the same basic function as transitional epithelium—accommodating stretch as the bladder fills.

The medial concave cleft in which vessels, ureters, and nerves enter/leave the kidney. A) cortex B) hilum C) renal corpuscle D) renal capsule E) sinus

hilum

Another name for the neck of the bladder is the A) superior surface. B) anterior angle. C) inferior angle. D) trigone.

inferior angle.

From which embryonic tissue layer(s) does the kidney arise? A) ectoderm B) mesoderm C) endoderm D) all three layers

mesoderm

If you looked closely at the tip of a renal papilla with a hand lens, the hundreds of little openings you would see on its surface are A) minor calyces. B) renal sinuses. C) openings of papillary ducts. D) glomeruli.

openings of papillary ducts.

Which of the following supportive tissues is most superficial? A) fibrous capsule B) pararenal fat C) perirenal fat D) renal fascia

pararenal fat

Which of the following is not usually associated with the formation of renal calculi? A) increased intake of calcium B) polyurea C) dehydration D) bacterial infection

polyurea

Which of the following would not inhibit micturition? A) stimulation of the somatic motor neurons to the external urethral sphincter B) activation of the sympathetic pathways C) relaxation of the internal urethal sphincter D) relaxation of the detrusor muscles

relaxation of the internal urethal sphincter

Which of the following structures is most numerous within a kidney? A) cortical radiate arteries B) minor calyces C) renal corpuscles D) renal papillae

renal corpuscles

When Melinda was asked to identify a "mystery" slide on a histology test, she immediately identified it as renal cortex because of the presence of scattered A) renal corpuscles. B) thin segments. C) renal papillae. D) vasa recta.

renal corpuscles.

Of the following, the only epithelial type that does not line the urethra is A) simple squamous. B) pseudostratified columnar. C) stratified squamous. D) stratified columnar.

simple squamous.

During a dissection, Arnie saw the ureters entering the lateral corners of the bladder but found the internal openings of the ureters in the trigone near the midline of the bladder. His observation necessarily means that A) the ureters run medially for some distance within the posterior bladder wall. B) the ureters and urethra are really the same tube. C) each ureter must have four distinct openings into the bladder. D) this bladder had a congenital defect.

the ureters run medially for some distance within the posterior bladder wall.

An important difference between the peritubular capillaries and the vasa recta in the kidney is that A) only the vasa recta are supplied by efferent arterioles. B) the vasa recta drain into arterioles, whereas the peritubular capillaries drain into venules. C) the vasa recta are involved in filtration, whereas the peritubular capillaries are involved in resorption. D) the vasa recta are in the medulla, whereas the peritubular capillaries are in the cortex.

the vasa recta are in the medulla, whereas the peritubular capillaries are in the cortex.

The epithelium lining the urinary bladder that permits distension is A) stratified squamous. B) transitional. C) simple squamous. D) pseudostratified columnar.

transitional.