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PHYG102A
Module 2: Avian Urinary System
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avian kidneys are (Shape)
lobulated
how many lobes do avian kidneys have
3
avian kidneys lack
renal pelvis
2 types of nephrons found in avian kidney
reptilian
,
mammalian
reptilian type nephrons have no
loop
of
henle
size of glomeruli of reptilian nephron
small
reptilian nephrons operate on _ filtration rate
lower
reptilian type nephrons are responsible for secreting majority of _
uric acid
mammalian type nephron are located in
cortex
,
medulla
mammalian nephrons operate on _ filtration
high
mammalian nephron can _ urine
concentrate
instead of urea, avian kidneys produce _ as a form of nitrogenous waste
uric acid
nitrogenous waste that is very toxic and requires a huge amount of water to be excreted
urea
avians have _ temperature and basal metabolic rate
higher
counterpart of vasopressin in birds
vasotocin
avians that have urinary bladder
ostriches
,
rheas
3 parts of cloaca
urodeum
,
coprodeum
,
proctodeum
part of cloaca that passes urine
urodeum
part of cloaca that passes feces from colon
coprodeum
part of cloaca that receives egg & is the reproductive tract
proctodeum
composition of avian droppings
feces
,
urates
,
urine
normal condition of storing urine in the bladder while it fills
urinary continence
contractions responsible for urinary continence
tonic contractions
occurs when an animal dribbles urine at frequent intervals instead of filling its bladder
incontinence
increased urine output
polyuria
decreased urine output
oliguria
no urine output
anuria
difficult or painful micturition
dysuria
slow, dropwise, painful discharge of urine caused by spasm of urethra & bladder
stranguria
stranguria is a clinical sign of
feline urologic syndrome
act of emptying bladder to urethra
micturition
removal of urine to external environment
urination
large volume of water
diuresis
large amount of salt in urine
natriuresis
glomeruli are _ shaped
cone