Structure
Main organ of the respiratory system
lungs
Air is filtered and humidified
nasal cavity
if you had a build up of CO2 in your body would you breathe faster or slower
faster
A person at rest breathes at a rate of :
a. 12-15 breaths per minute
b. 20-25 breaths per minute
c. 50-60 breaths per minute
A
How many chambers does the heart have
4
the two branches that go into each lung
bronchi
The voice box is housed here
larynx
air travels from the pharynx to the ____ then the _____ then the ___ then to the bronchioles and alveoli
larynx, trachea, bronchi
The fastest recorded sneeze speed is
a. 50 mph
b. 90 mph
c. 102 mph
C
do arteries go to the heart or away from the heart
away
the first place air goes when breathing in
nasal/oral cavity
air exchange happnes (O2 is changed for CO2)
alveoli
why is it better to breathe through the nose than the mouth?
the nose has hair and mucus to filter and humidify air
True or False: We lose half a liter of water a day through breathing. This is the water vapor we see when we breathe onto glass
true or false: blood is not always red
false
The last stop for oxygen before its taken to the rest of the body
alveoli
this muscle moves down to create space for the lungs to fill up
diaphragm
what causes us to need to breathe
build up of CO2
Why is the right lung slightly larger than the left?
because of where the heart is
what connects arteries and veins
capillaries
The place where food and air pass through
pharynx
The muscle the flaps down to prevent food from going down the wind pipe
epiglottis
Oxygen moves into the lungs because it is in a ___ concentration and wants to go to a ____ concentration.
High, Low
The surface area of the lungs is roughly the same size as
a. paradigm
b. tennis court
c. queen sized bed
B
Name one of the valves in the heart
mitral, pulmonary, tricuspid, aortic