WorksheetsThe Excretory System
Total questions: 27
Worksheet time: 14mins
The regulation of a stable internal environment in your body is technically called ___
hydroregulation
homeostasis
osmosis
dynamic equilibrium
The excretory system, which includes the kidneys, the ureters, the bladder, and the urethra, is also known as ___
the bladder system
the urea system
the urinary system
the digestive system
Maintaining the right levels of water and dissolved substances in your body is called ___
nitrogen balance
urinary equilibrium
ureastasis
osmoregulation
A main byproduct of metabolizing food is ammonia, which is pretty toxic, and comes from breaking down ___
proteins
sugars
fats
fiber
Mammals, amphibians and some marine animals convert ammonia into ___
ammonium salts
uric acid
urea
amino acids
What is the main component of the white paste in bird droppings?
poop
ammonia
urea
uric acid
On an average day your kidneys filter out about 180 liters of fluid from your blood. How much gets peed out?
1.5 liters
5.1 liters
10.5 liters
15 liters
Most of you excretory system isn't dedicated to excreting, its dedicated to ___
transporting
reabsorbing
circulating
locomotion
Each one of your mango sized kidneys has about a million tiny filtering structures called ___
medullas
glomerulas
nephrons
renals
If you were to unravel all of your nephrons and put them end to end, how far would they stretch?
almost 20 kilometers
about 40 kilometers
about 60 kilometers
over 80 kilometers
Whenever you hear the word renal, it means we're dealing with ___
kidney stuff
bladder stuff
blood vessels
arteries
The starting point for a single nephron is a tiny tangle of porous capillaries called ___
the filtration capsule
the glomerulus
the Bowman's Capsule
the proximal convoluted tubule
What's the name of the cup-like sack at the beginning of the tubular component of a nephron?
the filtration bolus
Henle's Pouch
Bowman's Capsule
the renal pocket
The stuff that gets squeezed out of the glomerulus and into Bowman's capsule is no longer blood, it is now called ___
filtrate
extract
sediment
precipitate
Filtrate flows into a twisted tube called the proximal convoluted tubule, which means the tube ___
near the beginning, that is straight
near the beginning, that is windy
near the end, that is straight
near the end, that is windy
In a nephron, what is the long, hairpin shaped tubule that passes through the two main layers of the kidney called?
the crypts of Koch
the braid of Gustov
the arch of Bowman
the loop of Henle
The cortex, or outer part of the kidney, is Latin for ___
"tree bark"
"egg shell"
"enamel"
"envelope"
The "marrow" or "pith" of the kidney is referenced using which latin word?
muralis
mephitis
medulla
maculata
Friedrich Henle was an early adopter of which wildly unpopular theory?
the germ theory of disease
game theory
plate tectonics
evolution by natural selection
Friedrich Henle is considered to be one of the founders of microbiology, along with his student ___
James Watson
Robert Koch
Alfred Russel Wallace
Ernst Mayr
The Crypts of Henle are microscopic pockets in the ___
sheath of a hair follicle
muscle fibers of your heart
whites of your eyes
outer layer of nerve fibres
The medulla is super salty relative to the filtrate, so it's said to be ___
hypertonic
hypotonic
isotonic
exotonic
As the filtrate starts going down the Loop of Henle, the membrane is ___
highly permeable to water and salt
highly permeable only to water
slightly permeable to water and salt
slightly permeable only to water
As the filtrate ascends the Loop of Henle, the membrane is ___
highly permeable to water and ions
highly permeable only to water
impermeable to water but permeable to ions
impermeable to water and ions
When urine leaves the kidneys it flows down to the urinary bladder by tubes called ___
urethras
ureters
sphincters
renal arteries
Which tube drains urine from the bladder out of the body?
the urethra
the ureter
the vas deferens
the fallopian tube
Kangaroo rats and other desert rodents produce concentrated urine because their Loop of Henle is ___
very narrow
very short
very long
very wide
