Kidneys
(1) How many kidneys do you have in your body and (2) where are they located?
(1) 2
(2) in your lower back
What are the ureters?
Narrow tubes that carry urine from the kidneys to the bladder.
How many main organs are there in the excretory system?
4
What is another organ that can take part in excretion?
Skin, Lungs, Bile, Large Intestine, Liver
True or false: Urine is produced in the bladder.
False - urine is produced in the kidneys.
What tubes are the kidneys connected to?
The ureters
What is the urethra?
A small tube through which urine exits the body.
What does "excretion" mean?
The process by which waste is removed from the body.
What are 2 other organs that take part in excretion?
(Can name any of these):
-Skin
-Lungs
-Bile
-Large Intestine
-Liver
(1) What do the kidneys filter out, and (2) what is that filter system called?
(1) they filter out blood an
(2) the nephrons
What is your urinary bladder?
A sack-like muscular organ that stores urine until it is ready to be eliminated from the body.
What is the job of the excretory system?
Turning our body's unneeded nutrients into waste and expelling it from the body.
What do all the organs help excrete?
Chemicals, fluids, and other nutrients that our body doesn't need or no longer needs
(100 BONUS POINTS: Can you name an example of unneeded nutrients?)
What is urea?
A chemical that comes from the breakdown of proteins.
What is the name of the blood vessel where blood flows into the kidney?
The venal artery
True or false: the ureters are between the bladder and the urethra.
False - the bladder is between the ureters and urethra.
Where is the excretory system located?
a.) lower back
b.) upper back
c.) middle of abdomen
d.) none of the above
a.) lower back
This word starts with an "H" and all of these organs help maintain this in the body.
Homeostasis
Where is bile found?
a.) liver
b.) bladder
c.) small intestine
d.) none of the above
c.) small intestine
3 facts/jobs of the kidneys
1. filter blood through nephrons
2. balances water throughout the body
3. major organ of the excretory system
4. the process in the kidneys takes about 45 min
5. good liquids go back to blood, bad liquids become urine
What else can you think of?
True or false: the ureters produce urine.
False - your kidneys produce urine.
List the functions of these organs in the excretory system:
1.) kidneys
2.) ureters
3.) bladder
Kidneys: filter blood and makes urine
Ureters: narrow tubes that transport urine from the kidneys to the urinary bladder
Urinary Bladder: stores urine until it is eliminated from the body
How do each of these organs get rid of waste products? (100 points for each correct answer)
a.) Skin
b.) Liver
c.) Large intestine
d.) Bile
e.) Lungs
a.) Skin: sweating out unneeded salt, water, and other chemicals
b.) Liver: like a recycling bin, helps maintain homeostasis
c.) Large Intestine: helping excrete solid waste and water
d.) Bile: secretes unneeded waste products in the small intestine
e.) Lungs: excreting the extra carbon dioxide and keeps a regular supply of water and oxygen
What are nephrons?
Nephrons are small filtering structures found in the kidneys that remove waste from the blood and produce urine.