Science
18.1 Respiration
18.2 Digestion
STUDY GUIDE
When you breathe, your respiratory
system is bringing your body
• Oxygen and removing carbon
dioxide
What order does air come into
your body?
• 1. mouth
• 2. throat
• 3. bronchial tubes
• 4. lungs
What body system makes speech
(your voice)
• Respiratory
Which muscle contracts (squeezes)
to make your chest expand (get
bigger)?
• diaphragm
When the digestive system breaks
down food, your body gets
• Energy and materials
When you chew your food, that is
what kind of digestion?
• Mechanical (you move your
mouth…mechanical means to
move)
When your saliva (spit) softens your
food that is what type of action?
• Chemical (your saliva has
chemicals in it that breaks down
your food)
Peristalsis is what type of
digestion?
• mechanical
If a cell does not get enough
oxygen it will
• die
To release energy, your body uses
oxygen and what during cellular
respiration?
• glucose
What is another word for the voice
box?
• larynx
Movement of food through the
esophagus due to muscular action
is called
• peristalsis
Chemical and mechanical digestion
occur in what two places?
• Mouth
• Stomach
What is produced in the liver?
• bile
What type of cell transports
(carries) oxygen through the body?
• Red blood cells
What do we do to get air into our
bodies?
• breathe
What is the esophagus?
• A tube that carries food
from the mouth to the
stomach
Where does digestion begin?
•Mouth
process)
(When you chew it begins the digestion
What absorbs water during
digestion?
• Large intestine
What tube is located between the
larynx and the bronchi
• trachea
What are the tiny air sacs where
gas is exchanged (swapped) called?
• alveoli
What is the substance (stuff) that
traps dirt and pollen called?
• mucus
Which muscle pushes the air out of
the lungs?
• diaphragm
• You can get asthma even if you don’t smoke.
• 20% of the air we breathe in is oxygen
What do scuba divers carry in their air
tanks?
• oxygen
Is water a nutrient (something
good for your body)?
• Yes
Salivary Glands are part of which
system?
• digestive
• Don’t forget to study the drawing of the
• 1. Respiratory system
• 2. Digestive system
alveoli
You will have to label the Respiratory System!
You will label the Digestive System
mouth
appendix
rectum