What do we need out of the air?
Oxygen
Where is oxygen found?
in the air
What do our kidneys needs alot of to function properly?
Water
How do we eliminate waste substances in our blood?
Excretion
Where does sweat occur?
On our skin
Exhalation is...?
When we breathe air out
Inhalation is...?
When we breathe air in
Waste substances from blood are excreted in what? (2 answers)
sweat and urine
The main function of the kidneys is...?
to filter the blood
in paint, glue, and cleaning products
What are the two breathing movements called?
Inhalation and Exhalation
The four main organs of the respiratory system are ...?
Nose, trachea, bronchi, and lungs
What is the main function of the bladder?
to store urine
A tube through which urine is expelled: _______
Urethra
The waste product of respiration is...?
Carbon dioxide
The two thinner tubes after the trachea
Bronchi
What are three harmful substances in the air?
pollutants, toxic substances, and cigarette smoke
What is produced from the filtration in the kidneys?
Urine
What are the three main organs of the excretory system?
kidneys, bladder, and urethra
When are two examples of when we should wash our hands?
after using the bathoom and before eating
What is the muscle found under the lungs that helps us breathe?
The diaphragm
What happens to the diaphragm when we inhale?
It contracts to allow air to enter
What are the 3 components of sweat?
water, mineral salts, and waste substances
What are two ways to keep our excretory systems healthy?
drink lots of water and keep our skin clean
Which gas is the most abundant in the atmosphere?
Nitrogen