Bio 669 Quiz 6 Study Questions with Correct Answers 100% Verified and Graded A+
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Course
Bio 669
Institution
Bio 669
Bio 669 Quiz 6 Study Questions with Correct Answers 100% Verified and Graded A+
renal capsule - Correct Answer mass of fat surrounding & covering each kidney
renal fascia - Correct Answer a fibrous tissue that double wraps the renal capsules
-contains adipose & connective tissue
hilum - Cor...
Bio 669 Quiz 6 Study Questions with Correct
Answers 100% Verified and Graded A+
renal capsule - Correct Answer mass of fat surrounding & covering each kidney
renal fascia - Correct Answer a fibrous tissue that double wraps the renal capsules
-contains adipose & connective tissue
hilum - Correct Answer indentation in kidneys & location for entry/exit of renal blood
vessels, nerves, ureters, lymphatic vessels
medulla - Correct Answer inner portion of kidney
contains renal pyramids-which contain the loop of henle & collecting ducts
-renal columns-extentions of cortex & extend b/w renal pyramids to renal pelvis
-major & minor calyces-chambers receiving urine from collecting ducts & enter renal
pelvis
structural unit of kidneys - Correct Answer lobe
-each lobe contains a pyramid & the overlying cortex
nephron - Correct Answer functional unit of kidneys
3 kinds-superficial cortical=85% of nephrons, extends into medulla
-midcortical=short or long loops
-juxtamedullary-12% of nephrons, lie close & extend deep into medulla, important for
concentrating urine
glomerulus - Correct Answer tufts of capillaries that loop into bowmans capsula
bowmans capsule - Correct Answer covers glomerulus & captures any fluid that leaks
out of it
mesangial cells - Correct Answer secrete mesangial matrix that helps keep glomerulus
together
-part connective tissue
-part smooth muscle so they contract to control blood flow
-part immune cells b/c they are phagocytotic & release cytokines
, -middle basement membrane-selectively permeable network
-outer capillary epithelium-contains podocytes from which pedicles/foot projections that
radiate & adhere to basement membrane
filtration slits - Correct Answer the pedicles interlock w/adjacts pedicles forming a
network of intercellular clefts
glomerular filtration membrane duty - Correct Answer separates blood of glomerular
capillaries from fluid in bowmans space & filters all components of blood ecept plasma
proteins
principal cells - Correct Answer found in distal tubules
-reabsorbs sodium & secretes K
-sensitive to aldosterone
intercalated cells - Correct Answer secrete H & reabsorb K & bicarb
juxtaglomerular cells - Correct Answer renin releasing cells that surround the afferent
arteriole that enters the golmeulus
-b/w the afferent & efferent arterioles is the macula dense which has sodium sensing
cells
interlobar artery - Correct Answer separate b/w renal pyramids & supply blood to
arcuate arteries
vasa vecta - Correct Answer network of capillaries the forms loops & closely follows the
loop of henle
-only supply blood to the medulla
-important for forming concentrated urine
ureters - Correct Answer long intertwining smooth muscle bundles
-pass thru bladder & smooth muscle causes peristaltic activity propeling urine into
bladder
-micturition compresses the lower end of ureter to prevent reflux of urine
bladder - Correct Answer smooth muscle that forms the detrusor muscle that becomes
thinner as the bladder volume increases
-trigone is the smooth triangular area b/w 2 ureters & the urethra
urethra - Correct Answer longer in males
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