Urinary/Excretory system

Question 1

Kidneys

Answer 1

Filter blood to remove urea

Question 2

Ureter

Answer 2

Vessel that carries urine from the kidneys to the bladder

Question 3

Bladder

Answer 3

Muscular sac which stores and releases urine

Question 4

Urethra

Answer 4

Vessel which carries urine from bladder to outside world

Question 5

What is urea

Answer 5

*Urea is cellular waste;
specifically, the substance that
results from the breakdown of
proteins (protein metabolism).
Urea is normally harmless and excreted in the urine. However, if it gets into the
digestive tract, this can cause poisoning.

Question 6

Function of the excretory system

Answer 6

As blood travels through the body, it carries important molecules (such as nutrients and oxygen) to the cells and takes away waste gases and chemicals.

The function of the excretory system is to remove waste products from the body.

Question 7

Main excretory system organs

Answer 7

• kidneys
• lungs
• sweat glands

Question 8

Molecule

Answer 8

(Molecule: a group of two or more atoms held together by attractive forces known as chemical
bonds.)

Question 9

The excretory system is responsible for:

Answer 9

1. Filtering the blood: the kidneys filter out urea from the blood to form urine.
2. Eliminating cellular and other waste: removing waste from the body (through urination, exhalation and perspiration).

Question 10

What is the excretory system responsible for?

Answer 10

The excretory system is responsible for:

1. Filtering the blood: the kidneys filter out urea from the blood to form
   urine.
2. Eliminating cellular and other waste: removing waste from the body
   (through urination, exhalation and perspiration).

Question 11

What are components of urine

Answer 11

The substances that are filtered by the kidneys in the excretory system

Question 12

Urine is made up of:

Answer 12

• Urea
• Salts: Your body will try to keep your salts at a healthy level by removing
  the extra salts from the blood and adding it to your urine.
• Water: Extra water in your blood will be removed.

Question 13

the goal

Answer 13

Various organs and systems in the body work together to maintain a healthy balance of water, salts and cellular waste.

Question 14

cellular waste

Answer 14

Cellular waste includes products from the breakdown of nutrients (such as
urea), as well as other substances that we breathe out (carbon dioxide) or consume (like salts).

Question 15

lungs

Answer 15

The lungs remove carbon dioxide from the blood when we exhale.

Question 16

sweat glands

Answer 16

Sweat glands excrete water, salts and other toxins through our
skin.

Question 17

kidneys

Answer 17

The kidneys filter out excess salts, urea and water from our blood.

Question 18

What do kidneys do

Answer 18

Kidneys have several jobs. One of the most important jobs is helping your
body eliminate toxins. Your kidneys filter your blood and send waste
products out of your body in urine (pee).

Question 19

what happens when your kidneys dont work

Answer 19

When your kidneys don’t work correctly, waste products build up in your. body. If this happens, you’ll feel sick and eventually die without treatment.

Question 20

kidneys

Answer 20

Your kidneys are bean-shaped organs about the size of your fist. They sit
under your ribcage, toward your back. Most people have two working
kidneys, but you can live well with only one kidney as long as it’s working correctly.

Question 21

kidney failure

Answer 21

Kidney failure (renal failure) means one or both of
your kidneys no longer function well on their own.
Kidney failure is sometimes temporary and
develops quickly (acute). Other times it’s a chronic
(long-term) condition that slowly gets worse.

Kidney failure is the most severe stage of kidney
disease. It’s fatal without treatment. If you have
kidney failure, you may survive a few days or
weeks without treatment.

Question 22

symptoms of renal failure

Answer 22

fatigue, nausea and vomiting, edema (swellin), poor appetite, metallic taste, peeing more, itchy and dry skin