Question

the excretory system - kidneys and large intestine

1. circle t if the statement is true or f if it is false.

t f a) \colon\ is another name for the large intestine.
t f b) urine is the same as water.
t f c) kidneys are important for circulation.
t f d) the kidneys are located on either side of our spine.
t f e) the kidneys are filled with millions of tiny tubes.
t f f) three important excretory organs are the kidneys, the liver and the abdomen.
t f g) the colon is twenty - five feet long and is coiled in our body.
t f h) urine drains from the kidneys into the bladder.

1. fill in each blank with a word from the list. one word will be left over.

water passed liquid balloon cell
kidney urine particle pint bladder
our two ______ s are important for removing waste. they remove ______
waste. ________ goes through the millions of tubes in the kidneys. here, some wate
is cleaned and sent back to the ______ s. what is left has waste ______
s in it. this is called ______. urine drains into the ______. this organ is
like a ________ that gets bigger as it fills up. urine stays in the bladder until it is
________ from the body.

Explanation:

For the true/false section:
a) "Colon" is the anatomical synonym for the large intestine.
b) Urine contains waste products (urea, salts) in addition to water, so it is not the same as pure water.
c) Kidneys filter blood, which supports proper circulation by maintaining blood composition and volume.
d) Kidneys are retroperitoneal, positioned on either side of the vertebral column (spine).
e) Kidneys contain millions of nephrons, which are tiny tubular structures that filter blood.
f) The abdomen is a body cavity, not an excretory organ; major excretory organs include kidneys, liver, and lungs/skin.
g) The colon (large intestine) is about 5 feet long; the small intestine is the 25-foot coiled organ.
h) Urine travels from kidneys via ureters to the urinary bladder for storage.

For the fill-in section:
a) The organs responsible for waste removal are kidneys.
b) They remove liquid waste from the body.
c) Water is filtered through the kidney tubules.
d) Cleaned water is returned to body cells.
e) The remaining fluid contains waste particles.
f) This waste-containing fluid is urine.
g) Urine drains into the bladder.
h) The bladder expands like a balloon as it fills.
i) Urine is passed out of the body once the bladder is full. The leftover word is "pint".

Answer:

1. True/False:

a) T
b) F
c) T
d) T
e) T
f) F
g) F
h) T

1. Fill-in-the-blank:

a) kidney
b) liquid
c) water
d) cell
e) particle
f) urine
g) bladder
h) balloon
i) passed
Leftover word: pint