Bio 669 Quiz 6 UPDATED Exam Questions
and CORRECT Answers
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
cortex - CORRECT ANSWER - outer portion of kidney
contains glumerulus, proximal tubules & distal tubules
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
renal corpuscle - CORRECT ANSWER - glomerulus, mesangial cells, & bowmans capsule
glomerular filtration membrane - CORRECT ANSWER - filters blood components thru its
3 layers
-inner capillary endothelium-in continuous contact w/basement membrane & contains pores
-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
and CORRECT Answers
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
cortex - CORRECT ANSWER - outer portion of kidney
contains glumerulus, proximal tubules & distal tubules
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
renal corpuscle - CORRECT ANSWER - glomerulus, mesangial cells, & bowmans capsule
glomerular filtration membrane - CORRECT ANSWER - filters blood components thru its
3 layers
-inner capillary endothelium-in continuous contact w/basement membrane & contains pores
-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
