respiratory system Flashcards
is a biological system consisting of specific organs and structures used for gas exchange in animals and plants.
respiratory system
3 major parts of respiratory system
the airway
the lungs
the muscle of respiration
the airway includes:
nose, mouth, larynx, parnxy, trachea, bronchi
is what we normally use to inhale and exhale
nose
external opening of the nose
nostrils
inside part of the nose
nasal cavity
is moist and sticky that captures dust, germs, and small particles
mucus
these are tiny hairs that help clean the air before it goes to the lungs
cilia
is what we use to breathe when we need more air than what can be taken in through the nostrils, as when we pant or puff when we are exhausted.
mouth
Is the opening just behind the nose and mouth and is part of both the respiratory and digestive systems.
pharynx
two round, fleshy masses in the back of your throat
tonsils
are a patch of tissue that sit in the back of the nasal cavity
adenoids
is also known as the “voice box” because it houses the vocal chords and the different muscles used in producing sounds.
larynx
leaf-shaped flap cartilage which controls airflow to the lungs and diverts food mass away from the trachea
epiglottis
Also referred to as the windpipe, is a tube through which respiratory gas transport takes place
trachea
branches of trachea
bronchi
lead to air sacs called alveoli, where most of the gas exchange happens
bronchioles
are the most essential organ for respiration. Their main function is to transfer oxygen into the bloodstream, and to excrete carbon dioxide into the air.
lungs
has 3 lobes
right lungs
has 2 lobes, slightly smaller in size
left lung
These lobes are filled with small and spongy air sacs called
alveoli
A dome-shaped strcture that separates the chest and the abdomen.
The main respiratory muscle
diaphragm
If we inhale, your diaphragm
it contracts(tightens) and moves downward
If we exhale, diaphragm
it relaxes and return to its normal shape
