quiz 8

Question 1

male urethra v female

Answer 1

male: both semen and urine exit but not at same time, has 3 parts (prostatic, membranous, spongy; longer
female: only urine, smaller

Question 2

direction of substances in tubular reabsorption

Answer 2

tubule to blood

Question 3

macula densa cells respond to

Answer 3

changes in Na content and filtrate

Question 4

when systemic bp is low, afferent arteriole will

Answer 4

dilate

Question 5

when GFR is low filtrate flows __
gives __ time for sodium reabsorption from filtrate. Sodium concentration in filtrate is __. Detected by macula densa cells which results in __ in release of vasoconstrictor, causes afferent arterioles to __ which ___ GFR

Answer 5

slowly
more
decreases
decrease
dilate
increases

Question 6

if transport maximum for glucose is 100 mg/100 ml and concentration of glucose in blood is 300mg/100ml, glucose will

Answer 6

appear in urine

Question 7

until the __ develops, urination is reflexive

Answer 7

pontine storage center

Question 8

myogenic mech to regulate GFR

Answer 8

when systemic BP is high aff art constricts

Question 9

renin-a-a;d

Answer 9

inc sod reabsorption, acts ti inc BV and BP, increase water reabsorption

Question 10

what happens of capsular hydros pressure were inc above normal

Answer 10

net filtration would decrease

Question 11

during micturition

Answer 11

inhibition of somatic nerves relaxes external urethral sphincter, micturition center control relaxes internal urethral sphincter and causes detrusor muscles to contract

Question 12

alcohol

Answer 12

inhibits release of ADH

Question 13

urinary bladder composed of __ ep

Answer 13

transitional

Question 14

an inc in permeability of cells of c.ducts is due to

Answer 14

inc production of ADH

Question 15

an inc in permeability of cells of collecting tubule to water is due to

Answer 15

ADH

Question 16

acts as trigger for initiation of micturition

Answer 16

stretch of bladder

Question 17

plasma osmolarity changes detected by

Answer 17

hypothalamic osmoreceptors

Question 18

glom capi differ from systemic capi

Answer 18

g.caps have afferent and efferent arteriole, are fenestrated and in kidneys
systemic caps have a venule, are continuous and are found almost everywhere

Question 19

ADH secretion
water reabsorption
urine output
bv
bp

Answer 19

increase
decrease
increase
increase

Question 20

kidneys stimulated to produce renin

Answer 20

by dec in bp

Question 21

tubular secretion allows for

Answer 21

elim of nitro watstes

Question 22

ureters are capable of

Answer 22

peristalsis, gravity responsible for most flow

Question 23

chief force pushing water and solutes out of blood across filtration mb

Answer 23

glom. hydrostatic pressure

Question 24

what direction do substance travel in tubular secretion

Answer 24

blood to tubule

Question 25

basic mech kidneys regulate bv and chemistry

Answer 25

by regulating amount of water we reabsorbed, we regulate BV, by regulating what solutes are reabsorbed we regulate blood chemistry. G.filtration: forming filtrate tubular reabsorption: absorbing water, electrolytes tubular secretion: secreting soluble wastes