The urinary system functions to maintain homeostasis, excrete waste products, and maintain fluid and electrolyte balance and pH. The smallest unit capable of forming urine is the nephron. The kidney removes waste from the body and helps regulate blood pressure. Blood and lymph vessels and nerves enter and exit the kidney through the hilus.

1. The functionof the urinarysystemisto
A) maintainhomeostasis
B) excrete waste products
C) secrete a hormone thatstimulatesproductionof redbloodcells
D) maintainfluidandelectrolytebalance andpH
E) all of the above
Whichof the followingisthe smallestunitof the urinarysystemcapable of formingurine?
A) glomerulus
B) nephronandcollectingduct
C) peritubularcapillaries
D) loopof Henle
The urinarysystemorgan that removeswaste productsfromthe bodyandhelpsregulate bloodpressure
isthe
A) liver.
B) heart.
C) kidney.
D) lungs.
Bloodand the lymphaticvesselsandnervesenterandexitthe kidneythroughwhatstructure?
A) hilus
B) renal sinus
C) renal calyces
D) adrenal glands
Of the layersof tissue thatsurroundthe kidney,whichlayeriscontinuouswiththe outerlayerof the
ureter?
A) adipose capsule
B) renal capsule
C) renal fascia
D) peritoneum
The layerof fattytissue thatsurroundsthe kidneyiscalledthe
A) renal sinus
B) renal pelvis
C) adipose capsule
D) renal capsule

2. The layerthat holdsthe kidneyinplace withinthe abdominal cavityiscalledthe
A) renal sinus
B) renal fascia
C) renal capsule
D) adipose capsule
The innerregionof the kidneythatappearsto containstriatedtriangles(i.e.the renal pyramids) iscalled
the
A) renal cortex
B) renal sinus
C) renal medulla
D) renal pelvis
Nephronsare foundrunningthroughwhichtwolayersof the kidney?
A) renal sinus,medulla
B) cortex,medulla
C) hilus,pyramids
D) pyramids,renal sinus
The apexesof the renal pyramidsare called
A) renal columns
B) renal papillae
C) renal pyramid
D) renal pelvis
In additiontothe bloodvessels,the nephronconsistsof twootherprincipal parts, the ______ where the
fluidisfilteredanda______ intowhichthe filteredfluidpasses.
A) glomerulus;renal tubule
B) renal pelvis;proximal tubule
C) collectingduct;distal tubule
D) glomerulus;juxtamedullarynephron
The _____ drainsblood fromthe glomerularcapillaries.
A) efferentarteriole
B) afferentarteriole
C) Bowman'scapsule

3. D) peritubularcapillary
Whichof the followingdescendintothe medulla?
A) Bowman'scapsule
B) distal tubule
C) proximal tubule
D) loopof Henle
Feedback:CorrectAnswer
Trace the flowof urine fromnephronstothe renal pelvis.
A) glomerulus-glomerularcapsule-proximal tubules-loopof Henle-distaltubules-collecting
duct-renal pelvis
B) glomerularcapsule -glomerulus-loopof Henle-distal tubules-proximal tubules-distal
tubular-collectingduct-renalpelvis
C) loopof Henle-distal tubules-collectingduct-proximaltubules-glomerulus-glomerular
capsule-renalpelvis
D) none of the above iscorrect
What are the cellscalledthatwrappedicels aroundthe glomerularcapillaries?
A) pinocytes
B) sertoli
C) podocytes
D) None of the above.
Feedback:CorrectAnswer
The kidneyliesonthe dorsal wall of the ______ cavity.
A) cranial
B) abdominal
C) thoracic
D) lateral