Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

The Excretory System

Total questions: 27

Worksheet time: 14mins

Name
Class
Date
1.

The regulation of a stable internal environment in your body is technically called ___

a)

hydroregulation

b)

homeostasis

c)

osmosis

d)

dynamic equilibrium

2.

The excretory system, which includes the kidneys, the ureters, the bladder, and the urethra, is also known as ___

a)

the bladder system

b)

the urea system

c)

the urinary system

d)

the digestive system

3.

Maintaining the right levels of water and dissolved substances in your body is called ___

a)

nitrogen balance

b)

urinary equilibrium

c)

ureastasis

d)

osmoregulation

4.

A main byproduct of metabolizing food is ammonia, which is pretty toxic, and comes from breaking down ___

a)

proteins

b)

sugars

c)

fats

d)

fiber

5.

Mammals, amphibians and some marine animals convert ammonia into ___

a)

ammonium salts

b)

uric acid

c)

urea

d)

amino acids

6.

What is the main component of the white paste in bird droppings?

a)

poop

b)

ammonia

c)

urea

d)

uric acid

7.

On an average day your kidneys filter out about 180 liters of fluid from your blood. How much gets peed out?

a)

1.5 liters

b)

5.1 liters

c)

10.5 liters

d)

15 liters

8.

Most of you excretory system isn't dedicated to excreting, its dedicated to ___

a)

transporting

b)

reabsorbing

c)

circulating

d)

locomotion

9.

Each one of your mango sized kidneys has about a million tiny filtering structures called ___

a)

medullas

b)

glomerulas

c)

nephrons

d)

renals

10.

If you were to unravel all of your nephrons and put them end to end, how far would they stretch?

a)

almost 20 kilometers

b)

about 40 kilometers

c)

about 60 kilometers

d)

over 80 kilometers

11.

Whenever you hear the word renal, it means we're dealing with ___

a)

kidney stuff

b)

bladder stuff

c)

blood vessels

d)

arteries

12.

The starting point for a single nephron is a tiny tangle of porous capillaries called ___

a)

the filtration capsule

b)

the glomerulus

c)

the Bowman's Capsule

d)

the proximal convoluted tubule

13.

What's the name of the cup-like sack at the beginning of the tubular component of a nephron?

a)

the filtration bolus

b)

Henle's Pouch

c)

Bowman's Capsule

d)

the renal pocket

14.

The stuff that gets squeezed out of the glomerulus and into Bowman's capsule is no longer blood, it is now called ___

a)

filtrate

b)

extract

c)

sediment

d)

precipitate

15.

Filtrate flows into a twisted tube called the proximal convoluted tubule, which means the tube ___

a)

near the beginning, that is straight

b)

near the beginning, that is windy

c)

near the end, that is straight

d)

near the end, that is windy

16.

In a nephron, what is the long, hairpin shaped tubule that passes through the two main layers of the kidney called?

a)

the crypts of Koch

b)

the braid of Gustov

c)

the arch of Bowman

d)

the loop of Henle

17.

The cortex, or outer part of the kidney, is Latin for ___

a)

"tree bark"

b)

"egg shell"

c)

"enamel"

d)

"envelope"

18.

The "marrow" or "pith" of the kidney is referenced using which latin word?

a)

muralis

b)

mephitis

c)

medulla

d)

maculata

19.

Friedrich Henle was an early adopter of which wildly unpopular theory?

a)

the germ theory of disease

b)

game theory

c)

plate tectonics

d)

evolution by natural selection

20.

Friedrich Henle is considered to be one of the founders of microbiology, along with his student ___

a)

James Watson

b)

Robert Koch

c)

Alfred Russel Wallace

d)

Ernst Mayr

21.

The Crypts of Henle are microscopic pockets in the ___

a)

sheath of a hair follicle

b)

muscle fibers of your heart

c)

whites of your eyes

d)

outer layer of nerve fibres

22.

The medulla is super salty relative to the filtrate, so it's said to be ___

a)

hypertonic

b)

hypotonic

c)

isotonic

d)

exotonic

23.

As the filtrate starts going down the Loop of Henle, the membrane is ___

a)

highly permeable to water and salt

b)

highly permeable only to water

c)

slightly permeable to water and salt

d)

slightly permeable only to water

24.

As the filtrate ascends the Loop of Henle, the membrane is ___

a)

highly permeable to water and ions

b)

highly permeable only to water

c)

impermeable to water but permeable to ions

d)

impermeable to water and ions

25.

When urine leaves the kidneys it flows down to the urinary bladder by tubes called ___

a)

urethras

b)

ureters

c)

sphincters

d)

renal arteries

26.

Which tube drains urine from the bladder out of the body?

a)

the urethra

b)

the ureter

c)

the vas deferens

d)

the fallopian tube

27.

Kangaroo rats and other desert rodents produce concentrated urine because their Loop of Henle is ___

a)

very narrow

b)

very short

c)

very long

d)

very wide