1.1 the respiratory system Flashcards
pages 8 - 12
through which organs can you breath?
nose and mouth
the way\path of the air when entering your body:
nasal cavity\oral cavity -
phraynx -
larynx -
windpipe (trachea) -
two tubes: bronchi -
lungs -
bronchi ranch out -
air enters the many tubes called bronchioles
what happens to the bronchioles after air entering it?
ends in microscopic air sacs called the alveoli
where’s the heart?
between the lungs slightly to the left hand side
which respiratory systems do we have?
lower and upper
what do cells need?
O2 (oxygen)
why is it better to breath through your nose?
mucus moistens inhaled air
inhaled air is warmed up by blood vessels
olfactory cells smell danger
nose hair trap dust, the larger particles
mucus traps smaller particles
why inhaled air must be filtered?
because air contains all kinds of dust particles, pollen, and germs that can make you ill.
what is pharnyx the passageway of?
food, liquid and air
where does the lower part of the pharynx diverge to?
windpipe and oesophagus
what needs to happen when we swallow food? and why?
the windpipe must be closed or else you might suffocate
why might you suffocate if the windpipe doesn’t close?
food or liquid can enter the airway, blocking airflow to your lungs and potentially causing suffocation.
what happens if you try to swallow and speak at the same time?
your epiglottis won’t close your windpipe completely, with dangerous consequences.
what closes the nasal cavity when you swallow?
the uvula
what is the uvula?
a small flap behind your throath
what is inside the larynx?
your vocal folds
what are the vocal folds?
2 elastic folds of tissue thats stretch across the windpipe, below the epiglottis. are joined at the front of the larynx and extended to the rear of the windpipe.
how do we produce sounds?
passing air causes the vocal cords to virate. happens during exhalation.
what is the other name for larynx?
voice box
how does the windpipe look like?
tube - like
where is the windpipe?
in front of the oesophagus
what does the wall of the windpipe contain?
C - shaped cartilage rings
what do the C -shaped cartilage rings do?
prevent windpipe from collapsing
why are the C-shaped cartilage rings C -shaped?
because there is no cartilage where the back of the windpipe presses against the oesphagus,
what happens in the bronchioles?
mucus captures dust particles and germs that were not caught earlier
what is there in the end of the bronchioles?
tiny clusters of sacs called alveoli.
what is the oral cavity known as?
the mouth
